2001 Housing Characteristics Tables

Housing Unit Tables

(Million U.S. Households; 49 pages, 210 kb)

Contents Pages

HC1-1a. Housing Unit Characteristics by Climate Zone, Million U.S. Households, 2001 5

HC1-2a. Housing Unit Characteristics by Year of Construction, Million U.S. Households, 2001 4 

HC1-3a. Housing Unit Characteristics by Household Income, Million U.S. Households, 2001 4

HC1-4a. Housing Unit Characteristics by Type of Housing Unit, Million U.S. Households, 2001 4

HC1-5a. Housing Unit Characteristics by Type of Owner-Occupied Housing Unit, Million U.S. Households, 2001 4 

HC1-6a. Housing Unit Characteristics by Type of Rented Housing Unit, Million U.S. Households, 2001 4 

HC1-7a. Housing Unit Characteristics by Four Most Populated States, Million U.S. Households, 2001 4

HC1-8a. Housing Unit Characteristics by Urban/Rural Location, Million U.S. Households, 2001 4

HC1-9a. Housing Unit Characteristics by Northeast Census Region, Million U.S. Households, 2001 4

HC1-10a. Housing Unit Characteristics by Midwest Census Region, Million U.S. Households, 2001 4

HC1-11a. Housing Unit Characteristics by South Census Region, Million U.S. Households, 2001 4

HC1-12a. Housing Unit Characteristics by West Census Region, Million U.S. Households, 2001 4

These data are from the 2001 Residential Energy Consumption Survey (RECS) which provides information on the use of

energy in residential housing units in the United States. The RECS is a national statistical survey that collects energy-related

data for occupied primary housing units. RECS was first conducted in 1978; the eleventh and most recent survey, was

conducted in 2001. In the 2001 RECS, data were collected from a sample of 4,822 households in housing units statistically

selected to represent the 107.0 million housing units in the United States. The RECS data are available for the four Census

regions, the nine Census divisions, and for the four most populous States--California, Florida, New York, and Texas.

Data provided here are in the public domain and may be reproduced without permission. Appropriate credit would be

appreciated. A suggested citation is “U.S. Department of Energy, Energy Information Administration, 2001 Residential 

Energy Consumption Survey.”

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Users can view and download selected pages or entire reports, search for information, download data and analysis

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Contact: Stephanie J. Battles, Survey Manager (stephanie.battles@eia.doe.gov)

World Wide Web: http://www.eia.doe.gov/emeu/consumption 
Table HC1-1a. Housing Unit Characteristics by Climate Zone,

 Million U.S. Households, 2001

Housing Unit

Characteristics

RSE Column Factor:

Total

Climate Zone1

RSE

Row

Factors

Fewer than 2,000 CDD and --

2,000 CDD

or More

and Fewer

than

4,000 HDD

More than

7,000 HDD

5,500 to

7,000 HDD

4,000 to

5,499 HDD

Fewer than

4,000 HDD

0.4 1.8 1.0 1.1 1.2 1.1

Total ............................................... 107.0 9.2 28.6 24.0 21.0 24.1 8.0

Census Region and Division

 Northeast ...................................... 20.3 1.9 10.0 8.4 Q Q 6.8

 New England .............................. 5.4 1.4 4.0 Q Q Q 18.4

 Middle Atlantic ............................ 14.8 0.5 6.0 8.4 Q Q 4.6

 Midwest ......................................... 24.5 5.4 14.8 4.3 Q Q 19.0

 East North Central ...................... 17.1 2.8 12.5 Q Q Q 15.7

 West North Central ..................... 7.4 2.7 Q 2.4 Q Q 26.4

 South ............................................ 38.9 Q Q 8.9 9.9 20.1 10.7

 South Atlantic .............................. 20.3 Q Q 6.3 5.7 8.3 3.4

 East South Central ...................... 6.8 Q Q 2.6 Q Q 33.1

 West South Central ..................... 11.8 Q Q Q Q 10.3 9.8

 West .............................................. 23.3 1.9 3.9 2.5 11.1 3.9 9.8

 Mountain ..................................... 6.7 1.0 2.9 Q Q 2.4 9.3

 Pacific ......................................... 16.6 0.9 Q 2.5 10.7 1.5 7.9

Metropolitan Statistical Area

 Urban ............................................ 85.5 4.5 25.5 19.3 15.7 20.4 7.3

 Central City ................................. 40.0 2.6 10.5 8.0 8.6 10.5 12.2

 Suburban .................................... 45.5 1.9 15.1 11.4 7.2 10.0 10.4

 Rural ............................................. 21.5 4.8 Q 4.7 5.3 3.7 18.6

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ................. 9.2 9.2 -- -- -- -- 20.3

 5,500 to 7,000 HDD .................... 28.6 -- 28.6 -- -- -- 13.5

 4,000 to 5,499 HDD .................... 24.0 -- -- 24.0 -- -- 12.6

 Fewer than 4,000 HDD ............... 21.0 -- -- -- 21.0 -- 13.4

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................. 24.1 -- -- -- -- 24.1 10.2

Total Floorspace Category2

(square feet)

 Fewer than 500 ............................. 3.9 Q 0.7 1.0 1.1 0.9 16.9

 500 to 999 .................................... 21.8 1.4 4.9 5.0 4.8 5.6 10.8

 1,000 to 1,499 .............................. 22.7 1.0 5.1 4.9 5.2 6.4 9.8

 1,500 to 1,999 .............................. 16.6 1.6 3.8 4.0 3.0 4.3 11.7

 2,000 to 2,499 .............................. 13.5 1.8 3.9 3.0 2.3 2.6 11.9

 2,500 to 2,999 .............................. 9.3 1.0 3.5 2.2 1.4 1.2 13.7

 3,000 to 3,499 .............................. 6.9 1.1 2.2 1.5 1.0 1.1 17.8

 3,500 to 3,999 .............................. 4.1 0.4 1.5 0.8 0.6 0.8 18.6

 4,000 or More .............................. 8.2 0.8 2.9 1.8 1.4 1.3 14.5

Type and Ownership of Housing

Unit

 Single-Family Detached ................ 63.1 6.3 16.0 12.3 13.0 15.6 8.9

 Owned ........................................ 55.7 5.6 14.6 11.0 10.8 13.6 9.1

 Rented ........................................ 7.4 0.7 1.4 1.3 2.1 2.0 16.2

 Single-Family Attached ................. 10.6 1.0 3.2 3.5 1.9 1.1 16.9

 Owned ........................................ 7.5 0.7 2.3 2.6 1.3 0.7 24.0

 Rented ........................................ 3.1 0.3 0.9 0.9 0.6 0.4 18.8

 Apartments in Buildings With

 2 to 4 Units .................................... 9.5 0.7 3.5 2.2 1.3 1.7 16.2

 Owned ........................................ 2.1 0.2 0.8 0.7 Q 0.3 26.4

 Rented ........................................ 7.4 0.6 2.7 1.5 1.2 1.4 17.8

 Apartments in Buildings With

 5 or More Units ............................. 17.0 0.7 4.2 5.0 3.5 3.5 14.8

 Owned ........................................ 1.8 Q 0.4 0.5 Q 0.9 38.0

 Rented ........................................ 15.2 0.7 3.9 4.5 3.5 2.6 14.0

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-1a. Housing Unit Characteristics by Climate Zone,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Climate Zone1

RSE

Row

Factors

Fewer than 2,000 CDD and --

2,000 CDD

or More

and Fewer

than

4,000 HDD

More than

7,000 HDD

5,500 to

7,000 HDD

4,000 to

5,499 HDD

Fewer than

4,000 HDD

0.4 1.8 1.0 1.1 1.2 1.1

Type and Ownership of Housing

Unit

 Mobile Homes ............................... 6.8 0.5 1.7 1.1 1.4 2.1 22.9

 Owned ........................................ 5.7 0.4 1.5 1.0 1.1 1.7 24.8

 Rented ........................................ 1.1 Q 0.3 Q Q 0.4 35.5

Ownership of Unit

 Owned .......................................... 72.7 6.9 19.5 15.7 13.3 17.2 7.9

 Rented .......................................... 34.3 2.4 9.1 8.3 7.6 6.8 9.0

Year of Construction

 1939 or Before .............................. 19.0 3.2 6.7 5.0 2.5 1.5 14.5

 1940 to 1949 ................................. 7.6 0.7 1.9 2.3 1.4 1.4 15.9

 1950 to 1959 ................................. 14.2 1.0 4.2 3.0 2.9 3.1 10.2

 1960 to 1969 ................................. 13.8 0.7 3.8 3.3 3.2 2.8 11.1

 1970 to 1979 ................................. 18.8 1.3 4.7 3.5 3.8 5.5 10.8

 1980 to 1989 ................................. 18.2 1.2 3.9 3.8 3.4 5.9 10.6

 1990 to 1999 ................................. 14.5 1.1 3.2 2.9 3.6 3.8 18.2

 2000 to 20013 ............................... 0.9 Q 0.3 Q Q Q 36.3

Urban/Rural Location4

 City ................................................ 49.9 4.3 11.8 9.3 11.3 13.1 8.8

 Town ............................................. 18.0 2.0 6.1 3.8 3.7 2.5 16.2

 Suburbs ........................................ 21.2 0.7 6.2 6.7 2.9 4.8 10.8

 Rural or Open Country .................. 17.9 2.3 4.6 4.3 3.1 3.7 16.6

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ............................................. 2.6 Q 0.7 0.7 0.6 0.4 27.2

 3 ................................................... 9.2 0.6 2.1 2.6 1.9 2.1 14.4

 4 ................................................... 19.0 1.7 4.9 4.2 4.0 4.3 10.8

 5 ................................................... 22.2 1.5 5.8 4.5 4.4 6.1 11.0

 6 ................................................... 23.0 1.9 6.0 5.0 4.9 5.2 10.4

 7 ................................................... 14.0 1.6 4.4 2.9 2.4 2.8 12.0

 8 ................................................... 9.8 1.2 2.7 2.3 1.7 2.0 12.9

 9 or More ...................................... 7.2 0.7 2.1 2.0 1.1 1.3 16.6

Bedrooms

 None or 1 ...................................... 13.6 1.0 3.4 3.8 2.6 2.8 11.8

 2 .................................................... 29.5 2.3 8.3 6.4 5.5 7.0 9.8

 3 .................................................... 44.1 3.8 11.4 9.7 9.3 9.9 9.7

 4 or More ...................................... 19.8 2.1 5.6 4.2 3.6 4.4 10.8

Other Rooms

(Excluding Bathrooms)

 None or 1 ...................................... 4.2 0.3 0.9 1.1 1.0 0.9 19.7

 2 .................................................... 39.4 2.9 9.6 8.5 8.8 9.6 8.9

 3 .................................................... 35.0 3.0 9.9 7.4 6.5 8.3 9.6

 4 .................................................... 18.4 1.9 5.5 4.2 3.2 3.6 11.3

 5 or More ...................................... 10.0 1.1 2.8 2.9 1.5 1.7 14.2

Full Bathrooms

 None or 1 ...................................... 58.5 6.0 17.9 14.2 10.0 10.4 8.7

 2 .................................................... 41.2 2.9 9.1 8.5 9.0 11.7 9.2

 3 or More ...................................... 7.3 0.4 1.6 1.3 1.9 1.9 18.6

Half Bathrooms

 None ............................................ 76.6 6.4 19.1 16.2 15.8 19.0 7.0

 1 .................................................... 27.9 2.5 8.8 7.0 4.9 4.8 8.1

 2 or More ...................................... 2.5 0.3 0.7 0.9 0.3 0.3 22.3

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-1a. Housing Unit Characteristics by Climate Zone,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Climate Zone1

RSE

Row

Factors

Fewer than 2,000 CDD and --

2,000 CDD

or More

and Fewer

than

4,000 HDD

More than

7,000 HDD

5,500 to

7,000 HDD

4,000 to

5,499 HDD

Fewer than

4,000 HDD

0.4 1.8 1.0 1.1 1.2 1.1

Number of Stories

 Single-Family Homes .................... 73.7 7.3 19.2 15.7 14.8 16.7 8.0

 1 Story ........................................ 44.2 3.4 8.7 7.1 10.6 14.5 9.5

 2 Stories ...................................... 26.4 3.6 9.2 7.6 3.9 2.1 10.7

 3 or More Stories ........................ 1.6 0.2 0.7 0.6 Q Q 22.9

 Split-Level ................................... 1.3 Q 0.6 0.4 Q Q 32.8

 Other ........................................... Q Q Q Q Q Q NF

 Apartments in Buildings With

 2 to 4 Units .................................... 9.5 0.7 3.5 2.2 1.3 1.7 16.2

 1 Story ........................................ 4.5 0.4 1.0 1.1 0.8 1.2 21.0

 2 Stories ...................................... 3.9 0.3 1.8 0.8 0.4 0.6 20.1

 3 or More Stories ........................ 1.1 Q 0.6 0.3 Q Q 35.4

 Split-Level ................................... Q Q Q Q Q Q NF

 Other ........................................... Q Q Q Q Q Q NF

 Mobile Homes ............................... 6.8 0.5 1.7 1.1 1.4 2.1 22.9

Number of Floors for Apartments

in Buildings With 5 or More Units 17.0 0.7 4.2 5.0 3.5 3.5 14.8

 1 or 2 Floors ................................ 8.9 0.2 1.7 1.3 2.9 2.7 20.1

 3 or 4 Floors ................................ 4.7 0.4 1.7 1.5 0.6 0.5 22.8

 5 to 10 Floors .............................. 2.4 Q 0.6 1.5 Q Q 27.0

 11 to 20 Floors ............................ 0.9 Q Q 0.6 Q Q 33.1

 More than 20 Floors .................... Q Q Q Q Q Q NF

Foundation/Basement of

Single-Family Homes and

Apartments in Buildings With

2 to 4 Units (More than one may

apply)

 Basement ...................................... 39.1 6.4 16.8 10.3 3.7 2.0 10.8

 Crawlspace ................................... 24.2 1.7 4.8 5.0 8.2 4.5 13.4

 Concrete Slab ............................... 29.5 1.0 4.2 4.4 7.2 12.7 10.3

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ............................ 23.8 1.2 6.0 6.1 4.9 5.6 12.1

Heated Basement in

Single-Family Homes and

Apartments in Buildings

With 2 to 4 Units

 Yes ................................................ 28.3 5.2 12.7 8.2 1.6 0.6 12.8

 All ................................................ 22.1 3.9 10.4 6.5 1.0 0.3 13.4

 Part ............................................. 6.2 1.3 2.4 1.7 0.6 0.3 18.4

 No ................................................. 10.8 1.1 4.1 2.1 2.1 1.4 13.9

 No Basement ................................ 44.0 1.7 5.9 7.7 12.4 16.4 10.1

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ............................ 23.8 1.2 6.0 6.1 4.9 5.6 12.1

Attic in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes ................................................ 24.6 2.2 6.3 5.7 4.8 5.5 12.5

 Finished ...................................... 3.5 0.4 1.1 0.8 0.7 0.5 23.2

 Unfinished ................................... 21.1 1.8 5.3 4.9 4.1 4.9 13.0

 No Attic ......................................... 58.6 5.8 16.3 12.2 11.3 13.0 8.9

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ............................ 23.8 1.2 6.0 6.1 4.9 5.6 12.1

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-1a. Housing Unit Characteristics by Climate Zone,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Climate Zone1

RSE

Row

Factors

Fewer than 2,000 CDD and --

2,000 CDD

or More

and Fewer

than

4,000 HDD

More than

7,000 HDD

5,500 to

7,000 HDD

4,000 to

5,499 HDD

Fewer than

4,000 HDD

0.4 1.8 1.0 1.1 1.2 1.1

Heated Attic in Single-Family

Homes and Apartments in

Buildings With 2 to 4 Units

 Yes ................................................ 4.5 0.4 1.2 1.1 0.8 1.0 19.7

 Fully Heated ................................ 2.7 0.2 0.8 0.7 0.3 0.6 22.1

 Partially Heated .......................... 1.8 0.2 0.3 0.4 0.5 0.4 27.7

 Attic Not Heated ............................ 20.1 1.9 5.2 4.6 4.0 4.4 13.1

 No Attic ......................................... 58.6 5.8 16.3 12.2 11.3 13.0 8.9

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ............................ 23.8 1.2 6.0 6.1 4.9 5.6 12.1

Garage/Carport

(single-family and mobile homes)

 Yes ................................................ 58.4 6.2 16.0 11.3 11.4 13.5 8.4

 Attached ...................................... 37.1 3.1 10.6 7.2 7.8 8.5 9.6

 1-Car Garage ............................ 10.8 1.1 2.9 3.1 1.9 1.9 16.5

 2-Car Garage ............................ 24.1 1.7 7.0 3.5 5.4 6.5 11.4

 3 or more Car Garage ............... 2.3 0.3 0.7 0.6 0.5 Q 28.5

 Detached .................................... 17.0 3.1 4.9 3.5 2.6 2.8 13.8

 1-Car Garage ............................ 6.9 1.2 1.8 1.7 1.1 1.1 17.3

 2-Car Garage ............................ 8.7 1.6 2.8 1.5 1.3 1.5 15.3

 3 or more Car Garage ............... 1.4 0.3 0.4 0.2 0.3 Q 29.7

 Carport (only) .............................. 4.2 Q 0.4 0.6 0.9 2.1 24.3

 No ................................................. 22.1 1.5 4.9 5.5 4.8 5.4 13.3

 Not Asked (Apartments) ............... 26.5 1.5 7.7 7.2 4.8 5.3 10.5

Fuels Used For Any Use

(more than one often used)

 Electricity ...................................... 107.0 9.2 28.6 24.0 21.0 24.1 8.0

 Natural Gas ................................... 66.9 4.9 21.2 14.9 13.8 12.1 8.6

 Wood ............................................ 14.5 2.0 3.1 2.9 3.4 3.0 13.1

 Fuel Oil ......................................... 8.7 1.8 2.9 3.7 Q Q 16.8

 LPG ............................................... 9.4 1.6 2.2 1.9 2.1 1.5 20.9

 Kerosene ...................................... 2.9 0.4 0.7 0.7 0.8 0.3 21.6

 Solar ............................................ 1.1 0.1 0.2 Q 0.4 0.3 31.0

Main Heating Fuel

 Natural Gas ................................... 59.3 4.8 20.2 12.5 11.9 9.8 9.1

 Electricity ...................................... 31.1 1.2 3.9 6.3 7.0 12.7 11.0

 Fuel Oil ......................................... 8.0 1.7 2.7 3.5 Q Q 16.8

 LPG ............................................... 5.0 0.8 1.3 1.1 1.0 0.9 28.5

 Wood ............................................ 2.0 0.6 0.3 0.5 0.4 Q 24.8

 Kerosene ...................................... 0.8 0.1 Q Q 0.4 Q 28.8

 Solar ............................................. Q Q Q Q Q Q NF

 Other/None ................................... 0.7 Q Q Q Q 0.4 31.2

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-1a. Housing Unit Characteristics by Climate Zone,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Climate Zone1

RSE

Row

Factors

Fewer than 2,000 CDD and --

2,000 CDD

or More

and Fewer

than

4,000 HDD

More than

7,000 HDD

5,500 to

7,000 HDD

4,000 to

5,499 HDD

Fewer than

4,000 HDD

0.4 1.8 1.0 1.1 1.2 1.1

Natural Gas Available in

Neighborhood

 Yes ................................................ 77.7 5.7 23.6 17.8 15.3 15.3 8.2

 No ................................................. 29.3 3.6 5.0 6.2 5.7 8.8 12.2

1 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this

report, the heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65

degrees Fahrenheit. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 2 Does not include floorspace for unheated garages. 3 New construction for 2001 includes only those housing units built and occupied between January and the April-August period when the household interviews

were conducted. 4 Based on the household respondent’s description rather than the Federal Government definition.

-- = Data not applicable.

NF = No applicable RSE row factor.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals.

 • See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2001 Residential Energy Consumption Survey.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-2a. Housing Unit Characteristics by Year of Construction,

 Million U.S. Households, 2001

Housing Unit

Characteristics

RSE Column Factor:

Total

Year of Construction

RSE

Row

Factors

1990

 to

20011

1980

to

1989

1970

to

1979

1960

to

1969

1950

to

1959

1949

or

Before

0.5 1.6 1.2 1.0 1.1 1.1 0.8

Total ............................................... 107.0 15.5 18.2 18.8 13.8 14.2 26.6 4.3

Census Region and Division

 Northeast ...................................... 20.3 1.5 2.4 2.1 2.8 3.0 8.5 8.8

 New England .............................. 5.4 0.4 0.7 0.4 0.8 0.9 2.3 11.3

 Middle Atlantic ............................ 14.8 1.1 1.7 1.7 2.0 2.2 6.2 11.2

 Midwest ......................................... 24.5 2.8 3.7 3.6 2.9 3.5 8.1 10.2

 East North Central ...................... 17.1 2.0 2.5 2.5 2.0 2.6 5.5 11.9

 West North Central ..................... 7.4 0.8 1.2 1.1 0.9 0.9 2.5 19.5

 South ............................................ 38.9 7.6 8.9 7.7 4.4 4.4 6.0 7.0

 South Atlantic .............................. 20.3 4.2 4.9 4.3 2.2 2.4 2.3 10.1

 East South Central ...................... 6.8 1.4 1.5 1.0 0.8 0.7 1.4 11.5

 West South Central ..................... 11.8 2.0 2.5 2.4 1.4 1.3 2.3 12.9

 West .............................................. 23.3 3.6 3.4 5.4 3.7 3.3 4.0 8.4

 Mountain ..................................... 6.7 1.2 0.9 1.9 0.8 0.8 1.2 17.1

 Pacific ......................................... 16.6 2.4 2.4 3.5 2.8 2.5 2.9 9.7

Metropolitan Statistical Area

 Urban ............................................ 85.5 12.0 15.2 14.8 11.6 12.0 19.9 4.8

 Central City ................................. 40.0 4.0 5.9 6.6 5.7 5.7 12.0 8.3

 Suburban .................................... 45.5 8.0 9.2 8.3 5.9 6.3 7.8 7.6

 Rural ............................................. 21.5 3.4 3.1 3.9 2.2 2.1 6.7 9.8

Climate Zone2

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ................. 9.2 1.3 1.2 1.3 0.7 1.0 3.9 19.7

 5,500 to 7,000 HDD .................... 28.6 3.5 3.9 4.7 3.8 4.2 8.6 12.3

 4,000 to 5,499 HDD .................... 24.0 3.1 3.8 3.5 3.3 3.0 7.3 12.8

 Fewer than 4,000 HDD ............... 21.0 3.7 3.4 3.8 3.2 2.9 4.0 12.6

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................. 24.1 3.9 5.9 5.5 2.8 3.1 2.8 11.1

Total Floorspace Category3

(square feet)

 Fewer than 500 ............................. 3.9 Q 0.6 0.7 0.7 0.4 1.3 19.4

 500 to 999 .................................... 21.8 2.1 3.8 5.3 3.0 2.5 5.1 8.5

 1,000 to 1,499 .............................. 22.7 3.4 4.1 4.3 2.9 2.8 5.1 8.9

 1,500 to 1,999 .............................. 16.6 2.2 3.0 2.6 2.1 2.4 4.4 9.5

 2,000 to 2,499 .............................. 13.5 2.1 2.3 1.9 1.7 2.2 3.2 10.4

 2,500 to 2,999 .............................. 9.3 1.2 1.3 1.4 1.3 1.4 2.7 12.4

 3,000 to 3,499 .............................. 6.9 1.2 1.3 0.9 0.7 0.9 1.9 15.6

 3,500 to 3,999 .............................. 4.1 0.8 0.6 0.6 0.5 0.4 1.2 17.4

 4,000 or More .............................. 8.2 2.3 1.2 1.0 0.8 1.1 1.8 14.0

Type and Ownership of Housing

Unit

 Single-Family Detached ................ 63.1 9.6 8.7 9.4 8.3 10.6 16.5 5.5

 Owned ........................................ 55.7 9.1 8.2 8.4 7.3 9.0 13.6 5.8

 Rented ........................................ 7.4 0.4 0.5 1.0 1.0 1.6 3.0 14.4

 Single-Family Attached ................. 10.6 1.9 2.4 1.9 1.3 0.9 2.2 16.3

 Owned ........................................ 7.5 1.5 1.8 1.2 1.0 0.7 1.4 20.0

 Rented ........................................ 3.1 0.4 0.6 0.7 0.3 0.2 0.8 21.4

 Apartments in Buildings With

 2 to 4 Units .................................... 9.5 0.5 1.6 1.3 0.9 1.1 4.1 14.5

 Owned ........................................ 2.1 Q 0.4 Q Q Q 1.2 28.7

 Rented ........................................ 7.4 0.4 1.2 1.1 0.8 1.0 2.9 15.3

 Apartments in Buildings With

 5 or More Units ............................. 17.0 1.5 3.5 4.3 2.7 1.4 3.6 11.8

 Owned ........................................ 1.8 Q 0.6 0.5 0.4 Q Q 38.0

 Rented ........................................ 15.2 1.5 2.9 3.8 2.3 1.2 3.4 11.9

 Mobile Homes ............................... 6.8 2.0 2.0 1.8 0.6 Q Q 15.1

 Owned ........................................ 5.7 1.9 1.6 1.5 0.5 Q Q 16.1

 Rented ........................................ 1.1 Q 0.4 0.3 Q Q Q 27.7

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-2a. Housing Unit Characteristics by Year of Construction,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Year of Construction

RSE

Row

Factors

1990

 to

20011

1980

to

1989

1970

to

1979

1960

to

1969

1950

to

1959

1949

or

Before

0.5 1.6 1.2 1.0 1.1 1.1 0.8

Ownership of Unit

 Owned .......................................... 72.7 12.5 12.7 11.8 9.2 10.1 16.4 5.0

 Rented .......................................... 34.3 2.9 5.5 7.0 4.5 4.1 10.2 7.4

Year of Construction

 1939 or Before .............................. 19.0 -- -- -- -- -- 19.0 7.5

 1940 to 1949 ................................. 7.6 -- -- -- -- -- 7.6 11.0

 1950 to 1959 ................................. 14.2 -- -- -- -- 14.2 -- 6.1

 1960 to 1969 ................................. 13.8 -- -- -- 13.8 -- -- 6.2

 1970 to 1979 ................................. 18.8 -- -- 18.8 -- -- -- 5.9

 1980 to 1989 ................................. 18.2 -- 18.2 -- -- -- -- 5.9

 1990 to 1999 ................................. 14.5 14.5 -- -- -- -- -- 9.0

 2000 to 20011 ............................... 0.9 0.9 -- -- -- -- -- 19.9

Urban/Rural Location4

 City ................................................ 49.9 5.4 6.7 8.8 6.9 7.1 15.0 6.5

 Town ............................................. 18.0 1.9 2.9 2.9 2.4 2.4 5.4 10.6

 Suburbs ........................................ 21.2 4.5 5.1 3.5 2.6 3.0 2.5 10.4

 Rural or Open Country .................. 17.9 3.7 3.5 3.5 1.9 1.6 3.6 10.5

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ............................................. 2.6 Q 0.4 0.4 0.5 0.2 0.9 26.7

 3 ................................................... 9.2 0.8 1.7 2.0 1.5 0.8 2.4 13.9

 4 ................................................... 19.0 1.9 3.8 4.1 2.3 2.0 4.8 8.9

 5 ................................................... 22.2 3.3 3.7 3.4 2.9 3.3 5.6 8.5

 6 ................................................... 23.0 2.8 3.9 3.7 2.8 4.1 5.7 7.7

 7 ................................................... 14.0 2.2 2.0 2.4 2.0 2.0 3.4 9.3

 8 ................................................... 9.8 2.3 1.8 1.6 1.1 1.1 2.0 12.5

 9 or More ...................................... 7.2 2.0 1.0 1.0 0.7 0.6 1.8 15.4

Bedrooms

 None or 1 ...................................... 13.6 0.9 2.2 2.5 2.2 1.1 4.6 12.5

 2 .................................................... 29.5 2.6 5.4 5.9 3.3 3.8 8.5 7.6

 3 .................................................... 44.1 7.8 7.4 7.1 5.8 6.7 9.3 6.5

 4 or More ...................................... 19.8 4.1 3.1 3.3 2.5 2.5 4.3 9.1

Other Rooms

(Excluding Bathrooms)

 None or 1 ...................................... 4.2 0.6 0.8 0.8 0.5 0.5 1.0 18.6

 2 .................................................... 39.4 5.2 7.0 7.9 5.9 4.9 8.6 6.4

 3 .................................................... 35.0 4.1 6.0 5.5 4.2 5.3 10.0 6.8

 4 .................................................... 18.4 2.9 2.9 3.1 2.4 2.6 4.4 9.5

 5 or More ...................................... 10.0 2.7 1.5 1.5 0.8 0.9 2.6 13.0

Full Bathrooms

 None or 1 ...................................... 58.5 3.0 7.0 9.9 8.3 9.3 21.0 5.8

 2 .................................................... 41.2 9.9 9.6 7.6 4.9 4.4 4.8 6.6

 3 or More ...................................... 7.3 2.6 1.6 1.2 0.5 0.5 0.8 17.5

Half Bathrooms

 None ............................................ 76.6 9.4 12.0 14.1 9.7 10.4 21.0 4.3

 1 .................................................... 27.9 5.5 5.9 4.2 3.9 3.4 5.0 7.8

 2 or More ...................................... 2.5 0.6 0.4 0.5 0.2 0.3 0.5 23.8

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-2a. Housing Unit Characteristics by Year of Construction,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Year of Construction

RSE

Row

Factors

1990

 to

20011

1980

to

1989

1970

to

1979

1960

to

1969

1950

to

1959

1949

or

Before

0.5 1.6 1.2 1.0 1.1 1.1 0.8

Number of Stories

 Single-Family Homes .................... 73.7 11.5 11.1 11.3 9.6 11.5 18.7 5.1

 1 Story ........................................ 44.2 6.0 5.8 8.0 7.4 8.6 8.3 6.2

 2 Stories ...................................... 26.4 5.2 4.7 2.5 1.7 2.5 9.7 9.2

 3 or More Stories ........................ 1.6 Q 0.2 0.3 Q Q 0.6 26.0

 Split-Level ................................... 1.3 Q 0.3 0.4 0.3 Q Q 29.7

 Other ........................................... Q Q Q Q Q Q Q NF

 Apartments in Buildings With

 2 to 4 Units .................................... 9.5 0.5 1.6 1.3 0.9 1.1 4.1 14.5

 1 Story ........................................ 4.5 0.3 0.9 0.8 0.6 0.5 1.4 19.7

 2 Stories ...................................... 3.9 Q 0.6 0.5 0.3 0.5 1.9 19.5

 3 or More Stories ........................ 1.1 Q Q Q Q Q 0.8 33.1

 Split-Level ................................... Q Q Q Q Q Q Q NF

 Other ........................................... Q Q Q Q Q Q Q NF

 Mobile Homes ............................... 6.8 2.0 2.0 1.8 0.6 Q Q 15.1

Number of Floors for Apartments

in Buildings With 5 or More Units 17.0 1.5 3.5 4.3 2.7 1.4 3.6 11.8

 1 or 2 Floors ................................ 8.9 0.7 2.6 2.4 1.3 0.7 1.1 17.1

 3 or 4 Floors ................................ 4.7 0.8 0.4 1.3 0.5 0.3 1.4 24.6

 5 to 10 Floors .............................. 2.4 Q 0.4 0.3 0.6 0.3 0.8 26.8

 11 to 20 Floors ............................ 0.9 Q Q Q 0.3 Q 0.3 34.5

 More than 20 Floors .................... Q Q Q Q Q Q Q NF

Foundation/Basement of

Single-Family Homes and

Apartments in Buildings With

2 to 4 Units (More than one may

apply)

 Basement ...................................... 39.1 4.8 4.4 4.4 4.7 6.2 14.6 7.6

 Crawlspace ................................... 24.2 2.7 2.6 3.0 3.2 4.5 8.1 9.5

 Concrete Slab ............................... 29.5 5.2 6.8 6.6 3.8 4.0 3.2 8.4

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ............................ 23.8 3.5 5.5 6.1 3.3 1.6 3.8 9.5

Heated Basement in

Single-Family Homes and

Apartments in Buildings

With 2 to 4 Units

 Yes ................................................ 28.3 3.9 3.2 3.3 3.7 4.5 9.7 8.6

 All ................................................ 22.1 3.2 2.7 2.6 2.9 3.6 7.1 9.2

 Part ............................................. 6.2 0.7 0.5 0.7 0.8 0.9 2.6 15.9

 No ................................................. 10.8 1.0 1.2 1.1 1.0 1.6 5.0 12.6

 No Basement ................................ 44.0 7.1 8.3 8.3 5.8 6.5 8.2 6.9

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ............................ 23.8 3.5 5.5 6.1 3.3 1.6 3.8 9.5

Attic in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes ................................................ 24.6 4.1 4.0 3.0 2.7 3.4 7.4 10.4

 Finished ...................................... 3.5 0.4 0.4 0.3 0.4 0.5 1.6 23.5

 Unfinished ................................... 21.1 3.7 3.6 2.7 2.3 3.0 5.8 11.0

 No Attic ......................................... 58.6 7.9 8.7 9.7 7.8 9.2 15.4 5.6

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ............................ 23.8 3.5 5.5 6.1 3.3 1.6 3.8 9.5

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-2a. Housing Unit Characteristics by Year of Construction,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Year of Construction

RSE

Row

Factors

1990

 to

20011

1980

to

1989

1970

to

1979

1960

to

1969

1950

to

1959

1949

or

Before

0.5 1.6 1.2 1.0 1.1 1.1 0.8

Heated Attic in Single-Family

Homes and Apartments in

Buildings With 2 to 4 Units

 Yes ................................................ 4.5 0.6 0.6 0.4 0.4 0.6 1.8 19.5

 Fully Heated ................................ 2.7 0.4 0.4 0.2 0.2 0.3 1.1 24.1

 Partially Heated .......................... 1.8 Q Q Q Q 0.3 0.7 24.9

 Attic Not Heated ............................ 20.1 3.4 3.4 2.6 2.3 2.8 5.6 11.1

 No Attic ......................................... 58.6 7.9 8.7 9.7 7.8 9.2 15.4 5.6

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ............................ 23.8 3.5 5.5 6.1 3.3 1.6 3.8 9.5

Garage/Carport

(single-family and mobile homes)

 Yes ................................................ 58.4 10.3 9.7 9.6 7.9 8.6 12.2 5.7

 Attached ...................................... 37.1 8.7 7.6 7.2 5.7 4.9 3.1 7.9

 1-Car Garage ............................ 10.8 1.3 1.6 1.8 1.7 2.4 1.9 14.9

 2-Car Garage ............................ 24.1 5.8 5.7 5.2 3.9 2.3 1.2 9.5

 3 or more Car Garage ............... 2.3 1.6 0.3 Q Q Q Q 21.5

 Detached .................................... 17.0 1.4 1.4 1.3 1.5 3.0 8.4 11.7

 1-Car Garage ............................ 6.9 Q 0.4 0.6 0.7 1.2 3.8 15.5

 2-Car Garage ............................ 8.7 1.0 0.7 0.6 0.7 1.6 4.0 14.7

 3 or more Car Garage ............... 1.4 0.2 0.3 Q Q Q 0.5 27.4

 Carport (only) .............................. 4.2 Q 0.7 1.1 0.7 0.8 0.7 20.2

 No ................................................. 22.1 3.2 3.4 3.5 2.2 3.0 6.8 10.0

 Not Asked (Apartments) ............... 26.5 2.0 5.1 5.6 3.6 2.5 7.7 9.1

Fuels Used For Any Use

(more than one often used)

 Electricity ...................................... 107.0 15.5 18.2 18.8 13.8 14.2 26.6 4.3

 Natural Gas ................................... 66.9 9.4 8.8 9.0 9.5 10.3 20.0 5.9

 Wood ............................................ 14.5 2.0 3.0 3.2 2.0 1.7 2.5 9.9

 Fuel Oil ......................................... 8.7 0.3 0.5 0.9 1.3 1.8 3.9 15.5

 LPG ............................................... 9.4 1.4 1.5 1.7 1.1 1.0 2.6 13.9

 Kerosene ...................................... 2.9 0.4 0.3 0.7 0.4 0.3 0.8 20.8

 Solar ............................................ 1.1 Q 0.2 Q 0.3 0.2 Q 30.6

Main Heating Fuel

 Natural Gas ................................... 59.3 8.6 7.4 7.8 8.5 9.3 17.8 6.4

 Electricity ...................................... 31.1 5.6 9.0 8.4 3.0 2.3 2.8 8.2

 Fuel Oil ......................................... 8.0 0.2 0.4 0.8 1.1 1.8 3.7 15.7

 LPG ............................................... 5.0 0.8 0.9 0.8 0.6 0.4 1.5 19.2

 Wood ............................................ 2.0 0.1 0.4 0.5 0.3 0.2 0.6 24.5

 Kerosene ...................................... 0.8 Q Q 0.3 Q Q Q 29.9

 Solar ............................................. Q Q Q Q Q Q Q NF

 Other/None ................................... 0.7 Q Q Q 0.2 0.2 Q 28.7

Natural Gas Available in

Neighborhood

 Yes ................................................ 77.7 10.8 10.9 11.6 10.6 11.5 22.3 5.3

 No ................................................. 29.3 4.6 7.3 7.1 3.2 2.7 4.3 8.7

1 New construction for 2001 includes only those housing units built and occupied between January and the April-August period when the household interviews were

conducted. 2 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this report, the

heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65 degrees Fahrenheit. 

A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 3 Does not include floorspace for unheated garages. 4 Based on the household respondent’s description rather than the Federal Government definition.

-- = Data not applicable.

NF = No applicable RSE row factor.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. • See

"Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2001 Residential Energy Consumption Survey.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-3a. Housing Unit Characteristics by Household Income,

 Million U.S. Households, 2001

Housing Unit

Characteristics

RSE Column Factor:

Total

2001 Household Income

Below Poverty

Line

Eligible

for

Federal

Assistance1

RSE

Row

Factors

Less

than

$14,999

$15,000

to

$29,999

$30,000

to

$49,999

$50,000

or

More

0.6 1.3 1.1 1.0 0.9 1.4 1.0

Total ............................................... 107.0 18.7 22.9 27.1 38.3 15.0 33.8 3.3

Census Region and Division

 Northeast ...................................... 20.3 3.3 4.2 4.9 7.8 2.6 6.8 6.4

 New England .............................. 5.4 0.8 1.1 1.3 2.3 0.6 1.6 9.9

 Middle Atlantic ............................ 14.8 2.6 3.2 3.5 5.6 2.0 5.2 7.7

 Midwest ......................................... 24.5 3.7 5.2 6.8 8.9 2.8 7.4 5.8

 East North Central ...................... 17.1 2.5 3.4 5.1 6.2 1.9 5.2 7.0

 West North Central ..................... 7.4 1.2 1.8 1.7 2.7 0.9 2.2 9.8

 South ............................................ 38.9 7.6 8.4 9.5 13.5 6.0 12.1 6.1

 South Atlantic .............................. 20.3 3.6 3.8 5.3 7.7 2.7 5.9 8.2

 East South Central ...................... 6.8 1.8 1.6 1.6 1.9 1.3 2.3 12.3

 West South Central ..................... 11.8 2.3 3.0 2.6 3.9 1.9 3.9 11.8

 West .............................................. 23.3 4.1 5.1 6.0 8.1 3.6 7.5 6.9

 Mountain ..................................... 6.7 1.3 2.0 2.0 1.4 1.1 2.5 10.0

 Pacific ......................................... 16.6 2.8 3.2 4.0 6.7 2.4 5.0 8.8

Metropolitan Statistical Area

 Urban ............................................ 85.5 13.7 17.1 21.0 33.7 11.1 25.4 3.8

 Central City ................................. 40.0 8.3 8.7 10.3 12.7 6.8 14.1 6.4

 Suburban .................................... 45.5 5.4 8.4 10.7 20.9 4.2 11.2 6.7

 Rural ............................................. 21.5 5.0 5.8 6.1 4.6 3.9 8.4 7.5

Climate Zone2

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ................. 9.2 1.5 1.9 2.5 3.3 1.0 2.7 19.0

 5,500 to 7,000 HDD .................... 28.6 4.4 6.3 7.7 10.3 3.4 9.4 10.6

 4,000 to 5,499 HDD .................... 24.0 4.2 5.1 5.6 9.0 3.3 8.0 11.0

 Fewer than 4,000 HDD ............... 21.0 4.3 3.9 4.9 7.8 3.8 6.7 12.1

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................. 24.1 4.2 5.6 6.4 7.9 3.5 7.1 10.4

Total Floorspace Category3

(square feet)

 Fewer than 500 ............................. 3.9 1.8 1.0 0.8 0.3 1.4 2.3 14.9

 500 to 999 .................................... 21.8 7.4 6.4 4.8 3.2 5.9 11.0 7.0

 1,000 to 1,499 .............................. 22.7 4.6 6.2 6.4 5.4 4.0 8.6 6.7

 1,500 to 1,999 .............................. 16.6 2.1 3.8 5.0 5.7 1.5 4.9 7.9

 2,000 to 2,499 .............................. 13.5 1.3 2.2 3.8 6.2 1.1 3.0 9.9

 2,500 to 2,999 .............................. 9.3 0.7 1.4 2.1 5.1 0.6 1.7 12.0

 3,000 to 3,499 .............................. 6.9 0.4 1.0 1.5 3.9 0.3 1.3 15.7

 3,500 to 3,999 .............................. 4.1 Q 0.4 1.1 2.4 Q 0.5 15.8

 4,000 or More .............................. 8.2 0.2 0.4 1.5 6.1 Q 0.7 15.2

Type and Ownership of Housing

Unit

 Single-Family Detached ................ 63.1 7.4 11.6 16.2 27.9 5.5 14.9 4.6

 Owned ........................................ 55.7 5.2 9.8 14.2 26.4 3.4 11.4 5.0

 Rented ........................................ 7.4 2.1 1.8 2.0 1.5 2.1 3.5 10.5

 Single-Family Attached ................. 10.6 1.3 1.8 3.0 4.5 1.1 2.9 13.4

 Owned ........................................ 7.5 0.5 1.1 2.2 3.7 0.4 1.4 19.3

 Rented ........................................ 3.1 0.8 0.7 0.8 0.7 0.7 1.5 16.9

 Apartments in Buildings With

 2 to 4 Units .................................... 9.5 2.6 2.6 2.5 1.7 2.3 4.3 11.1

 Owned ........................................ 2.1 Q 0.6 0.7 0.7 Q 0.6 23.8

 Rented ........................................ 7.4 2.5 2.0 1.8 1.1 2.1 3.8 11.9

 Apartments in Buildings With

 5 or More Units ............................. 17.0 5.7 4.1 3.9 3.3 4.5 8.3 9.2

 Owned ........................................ 1.8 Q 0.4 0.5 0.7 Q 0.3 38.2

 Rented ........................................ 15.2 5.5 3.7 3.4 2.6 4.4 8.0 9.2

 Mobile Homes ............................... 6.8 1.7 2.7 1.5 1.0 1.5 3.3 14.1

 Owned ........................................ 5.7 1.2 2.3 1.3 0.9 1.1 2.6 16.0

 Rented ........................................ 1.1 0.4 0.4 Q Q 0.5 0.7 23.2

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-3a. Housing Unit Characteristics by Household Income,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

2001 Household Income

Below Poverty

Line

Eligible

for

Federal

Assistance1

RSE

Row

Factors

Less

than

$14,999

$15,000

to

$29,999

$30,000

to

$49,999

$50,000

or

More

0.6 1.3 1.1 1.0 0.9 1.4 1.0

Ownership of Unit

 Owned .......................................... 72.7 7.4 14.2 18.8 32.3 5.2 16.3 4.5

 Rented .......................................... 34.3 11.3 8.7 8.3 6.0 9.8 17.5 5.3

Year of Construction

 1939 or Before .............................. 19.0 4.4 4.9 4.9 4.8 3.5 7.8 7.6

 1940 to 1949 ................................. 7.6 2.0 1.8 1.8 2.0 1.6 3.6 11.1

 1950 to 1959 ................................. 14.2 2.1 3.2 4.0 4.9 1.7 4.0 8.9

 1960 to 1969 ................................. 13.8 2.3 3.0 3.6 4.8 1.7 4.2 8.8

 1970 to 1979 ................................. 18.8 3.5 4.4 4.9 6.1 2.8 6.3 7.6

 1980 to 1989 ................................. 18.2 2.8 3.3 4.7 7.4 2.3 4.7 9.4

 1990 to 1999 ................................. 14.5 1.5 2.2 3.0 7.8 1.3 3.0 13.5

 2000 to 20014 ............................... 0.9 Q Q Q 0.6 Q Q 28.8

Urban/Rural Location5

 City ................................................ 49.9 10.8 11.2 12.6 15.3 8.8 18.2 5.2

 Town ............................................. 18.0 3.7 4.4 4.4 5.5 2.8 6.6 9.0

 Suburbs ........................................ 21.2 1.7 3.2 4.9 11.4 1.4 3.8 9.6

 Rural or Open Country .................. 17.9 2.6 4.2 5.1 6.0 2.0 5.2 10.5

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ............................................. 2.6 1.3 0.7 0.3 Q 1.1 1.7 17.6

 3 ................................................... 9.2 3.9 2.6 1.5 1.3 3.0 5.0 10.1

 4 ................................................... 19.0 5.3 4.8 5.5 3.4 3.7 8.1 7.2

 5 ................................................... 22.2 4.0 6.3 5.8 6.0 3.6 7.8 6.5

 6 ................................................... 23.0 2.8 4.7 7.2 8.3 2.2 6.5 7.1

 7 ................................................... 14.0 0.9 2.3 3.8 7.1 0.9 2.8 9.5

 8 ................................................... 9.8 0.4 0.8 1.9 6.7 0.3 1.0 15.3

 9 or More ...................................... 7.2 Q 0.6 1.1 5.3 Q 0.8 15.0

Bedrooms

 None or 1 ...................................... 13.6 5.6 3.9 2.4 1.8 4.3 7.2 8.3

 2 .................................................... 29.5 7.2 7.9 8.0 6.5 5.2 11.6 6.3

 3 .................................................... 44.1 4.9 8.8 13.0 17.4 4.3 11.5 5.2

 4 or More ...................................... 19.8 1.0 2.3 3.7 12.7 1.2 3.5 9.5

Other Rooms

(Excluding Bathrooms)

 None or 1 ...................................... 4.2 1.6 1.1 0.7 0.8 1.3 2.3 14.3

 2 .................................................... 39.4 10.9 10.4 10.0 8.0 8.5 17.3 4.9

 3 .................................................... 35.0 4.7 7.5 10.3 12.6 3.9 9.9 5.6

 4 .................................................... 18.4 1.1 2.9 4.4 10.1 0.9 3.1 9.6

 5 or More ...................................... 10.0 0.4 0.9 1.7 6.8 0.4 1.3 14.1

Full Bathrooms

 None or 1 ...................................... 58.5 15.7 15.7 14.9 12.2 12.1 25.8 4.1

 2 .................................................... 41.2 2.8 6.8 11.0 20.6 2.6 7.4 6.6

 3 or More ...................................... 7.3 Q 0.4 1.2 5.5 0.3 0.7 18.5

Half Bathrooms

 None ............................................ 76.6 16.1 18.3 19.6 22.6 13.1 27.5 3.3

 1 .................................................... 27.9 2.4 4.1 7.0 14.4 1.7 5.9 6.4

 2 or More ...................................... 2.5 Q 0.5 0.5 1.4 Q 0.5 22.7

Number of Stories

 Single-Family Homes .................... 73.7 8.7 13.5 19.2 32.3 6.7 17.8 4.2

 1 Story ........................................ 44.2 6.6 9.6 12.3 15.8 4.8 12.1 5.2

 2 Stories ...................................... 26.4 2.0 3.5 6.1 14.8 1.7 5.2 7.7

 3 or More Stories ........................ 1.6 Q 0.3 0.4 1.0 Q 0.4 25.1

 Split-Level ................................... 1.3 Q Q 0.4 0.7 Q Q 25.6

 Other ........................................... Q Q Q Q Q Q Q NF

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-3a. Housing Unit Characteristics by Household Income,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

2001 Household Income

Below Poverty

Line

Eligible

for

Federal

Assistance1

RSE

Row

Factors

Less

than

$14,999

$15,000

to

$29,999

$30,000

to

$49,999

$50,000

or

More

0.6 1.3 1.1 1.0 0.9 1.4 1.0

 Apartments in Buildings With

 2 to 4 Units .................................... 9.5 2.6 2.6 2.5 1.7 2.3 4.3 11.1

 1 Story ........................................ 4.5 1.5 1.1 1.3 0.6 1.3 2.1 16.6

 2 Stories ...................................... 3.9 0.9 1.1 1.0 0.9 0.8 1.8 15.2

 3 or More Stories ........................ 1.1 0.2 0.4 0.3 0.2 Q 0.5 32.9

 Split-Level ................................... Q Q Q Q Q Q Q NF

 Other ........................................... Q Q Q Q Q Q Q NF

 Mobile Homes ............................... 6.8 1.7 2.7 1.5 1.0 1.5 3.3 14.1

Number of Floors for Apartments

in Buildings With 5 or More Units 17.0 5.7 4.1 3.9 3.3 4.5 8.3 9.2

 1 or 2 Floors ................................ 8.9 2.8 2.5 1.7 1.9 2.3 4.1 12.8

 3 or 4 Floors ................................ 4.7 1.5 0.9 1.4 0.8 1.1 2.3 18.9

 5 to 10 Floors .............................. 2.4 1.0 0.6 0.5 0.3 0.7 1.4 24.7

 11 to 20 Floors ............................ 0.9 0.5 Q Q Q 0.4 0.6 31.8

 More than 20 Floors .................... Q Q Q Q Q Q Q NF

Foundation/Basement of

Single-Family Homes and

Apartments in Buildings With

2 to 4 Units (More than one may

apply)

 Basement ...................................... 39.1 4.0 7.1 9.8 18.3 2.9 9.6 6.4

 Crawlspace ................................... 24.2 4.0 5.2 6.4 8.6 2.9 7.0 7.6

 Concrete Slab ............................... 29.5 3.7 5.3 8.2 12.3 3.2 7.0 7.0

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ............................ 23.8 7.4 6.8 5.3 4.3 6.1 11.7 7.4

Heated Basement in

Single-Family Homes and

Apartments in Buildings

With 2 to 4 Units

 Yes ................................................ 28.3 2.1 4.8 6.9 14.5 1.5 5.9 7.6

 All ................................................ 22.1 1.7 3.8 5.4 11.2 1.2 4.7 7.9

 Part ............................................. 6.2 0.3 1.1 1.5 3.3 0.3 1.3 16.1

 No ................................................. 10.8 1.9 2.2 2.9 3.8 1.4 3.6 10.3

 No Basement ................................ 44.0 7.3 9.0 12.0 15.8 6.0 12.6 5.7

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ............................ 23.8 7.4 6.8 5.3 4.3 6.1 11.7 7.4

Attic in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes ................................................ 24.6 2.3 3.8 6.5 12.0 1.7 5.1 9.6

 Finished ...................................... 3.5 0.5 0.4 0.9 1.7 0.4 0.8 19.1

 Unfinished ................................... 21.1 1.8 3.4 5.6 10.2 1.3 4.2 10.5

 No Attic ......................................... 58.6 9.0 12.2 15.3 22.1 7.2 17.0 4.9

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ............................ 23.8 7.4 6.8 5.3 4.3 6.1 11.7 7.4

Heated Attic in Single-Family

Homes and Apartments in

Buildings With 2 to 4 Units

 Yes ................................................ 4.5 0.4 0.8 1.1 2.1 0.4 1.0 16.1

 Fully Heated ................................ 2.7 0.2 0.5 0.6 1.4 0.2 0.6 20.9

 Partially Heated .......................... 1.8 0.2 0.3 0.5 0.8 Q 0.4 23.8

 Attic Not Heated ............................ 20.1 1.9 3.0 5.4 9.8 1.3 4.0 10.8

 No Attic ......................................... 58.6 9.0 12.2 15.3 22.1 7.2 17.0 4.9

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ............................ 23.8 7.4 6.8 5.3 4.3 6.1 11.7 7.4

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-3a. Housing Unit Characteristics by Household Income,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

2001 Household Income

Below Poverty

Line

Eligible

for

Federal

Assistance1

RSE

Row

Factors

Less

than

$14,999

$15,000

to

$29,999

$30,000

to

$49,999

$50,000

or

More

0.6 1.3 1.1 1.0 0.9 1.4 1.0

Garage/Carport

(single-family and mobile homes)

 Yes ................................................ 58.4 5.1 10.1 14.8 28.4 3.6 11.5 4.8

 Attached ...................................... 37.1 2.2 5.0 8.6 21.3 1.6 5.5 7.8

 1-Car Garage ............................ 10.8 1.4 1.9 2.9 4.6 0.9 2.6 12.6

 2-Car Garage ............................ 24.1 0.8 3.0 5.5 14.8 0.6 2.8 10.4

 3 or more Car Garage ............... 2.3 Q Q 0.3 1.9 Q Q 25.3

 Detached .................................... 17.0 2.3 3.8 4.9 6.0 1.7 4.8 8.6

 1-Car Garage ............................ 6.9 1.3 1.7 2.0 1.8 1.0 2.4 11.3

 2-Car Garage ............................ 8.7 0.9 1.9 2.3 3.6 0.6 2.3 11.1

 3 or more Car Garage ............... 1.4 Q 0.2 0.5 0.6 Q Q 25.7

 Carport (only) .............................. 4.2 0.6 1.3 1.3 1.0 0.4 1.2 17.5

 No ................................................. 22.1 5.2 6.1 5.9 4.9 4.6 9.6 8.1

 Not Asked (Apartments) ............... 26.5 8.4 6.7 6.4 5.0 6.8 12.7 6.6

Fuels Used For Any Use

(more than one often used)

 Electricity ...................................... 107.0 18.7 22.9 27.1 38.3 15.0 33.8 3.3

 Natural Gas ................................... 66.9 11.1 13.8 16.4 25.5 9.3 20.7 4.7

 Wood ............................................ 14.5 1.1 1.9 3.6 8.0 0.7 2.3 9.9

 Fuel Oil ......................................... 8.7 1.0 1.8 2.5 3.4 0.8 2.4 12.6

 LPG ............................................... 9.4 1.6 2.2 2.6 3.0 1.2 3.0 12.8

 Kerosene ...................................... 2.9 0.6 0.6 0.9 0.8 0.7 1.2 16.7

 Solar ............................................ 1.1 Q Q 0.3 0.6 Q Q 28.6

Main Heating Fuel

 Natural Gas ................................... 59.3 9.5 12.4 14.3 23.1 7.8 18.1 5.1

 Electricity ...................................... 31.1 6.4 6.8 8.1 9.7 4.9 10.4 7.2

 Fuel Oil ......................................... 8.0 1.0 1.7 2.2 3.2 0.7 2.3 12.7

 LPG ............................................... 5.0 1.0 1.4 1.4 1.2 0.7 1.8 17.2

 Wood ............................................ 2.0 0.4 0.3 0.7 0.7 0.3 0.6 20.7

 Kerosene ...................................... 0.8 0.4 0.3 0.1 Q 0.4 0.6 25.3

 Solar ............................................. Q Q Q Q Q Q Q NF

 Other/None ................................... 0.7 Q Q 0.2 0.3 Q 0.2 38.9

Natural Gas Available in

Neighborhood

 Yes ................................................ 77.7 13.6 16.6 19.0 28.5 11.1 24.7 4.0

 No ................................................. 29.3 5.1 6.2 8.1 9.8 3.9 9.1 7.8

1 Below 150 percent of poverty line or 60 percent of median State income. 2 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this report, the

heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65 degrees Fahrenheit. 

A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 3 Does not include floorspace for unheated garages. 4 New construction for 2001 includes only those housing units built and occupied between January and the April-August period when the household interviews were

conducted. 5 Based on the household respondent’s description rather than the Federal Government definition.

NF = No applicable RSE row factor.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. • See

"Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2001 Residential Energy Consumption Survey.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-4a. Housing Unit Characteristics by Type of Housing Unit,

 Million U.S. Households, 2001

Housing Unit

Characteristics

RSE Column Factor:

Total

Type of Housing Unit

RSE

Row

Factors

Single-Family 

Apartments in Buildings With

Two to Four Units Five or More Units Mobile Homess

0.5 0.5 1.5 1.3 1.9

Total ............................................... 107.0 73.7 9.5 17.0 6.8 4.5

Census Region and Division

 Northeast ...................................... 20.3 12.0 3.1 4.5 0.7 8.4

 New England .............................. 5.4 3.5 1.1 0.6 0.2 15.7

 Middle Atlantic ............................ 14.8 8.5 2.0 3.8 0.5 10.0

 Midwest ......................................... 24.5 18.3 2.2 2.8 1.2 8.7

 East North Central ...................... 17.1 12.4 1.8 2.0 0.8 9.3

 West North Central ..................... 7.4 5.8 0.4 0.8 0.4 20.1

 South ............................................ 38.9 28.6 2.6 4.5 3.3 8.9

 South Atlantic .............................. 20.3 14.8 1.4 2.6 1.5 14.1

 East South Central ...................... 6.8 5.1 Q 0.4 0.9 12.8

 West South Central ..................... 11.8 8.7 0.7 1.5 0.9 10.6

 West .............................................. 23.3 14.8 1.6 5.3 1.7 9.3

 Mountain ..................................... 6.7 4.6 0.5 0.9 0.8 16.7

 Pacific ......................................... 16.6 10.2 1.1 4.4 0.9 11.2

Metropolitan Statistical Area

 Urban ............................................ 85.5 57.2 8.1 16.1 4.1 5.4

 Central City ................................. 40.0 24.6 4.9 9.2 1.4 8.7

 Suburban .................................... 45.5 32.6 3.2 6.9 2.8 8.7

 Rural ............................................. 21.5 16.5 1.4 0.9 2.7 10.3

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ................. 9.2 7.3 0.7 0.7 0.5 25.8

 5,500 to 7,000 HDD .................... 28.6 19.2 3.5 4.2 1.7 12.4

 4,000 to 5,499 HDD .................... 24.0 15.7 2.2 5.0 1.1 14.8

 Fewer than 4,000 HDD ............... 21.0 14.8 1.3 3.5 1.4 15.4

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................. 24.1 16.7 1.7 3.5 2.1 12.8

Total Floorspace Category2

(square feet)

 Fewer than 500 ............................. 3.9 0.5 0.5 2.5 0.4 17.7

 500 to 999 .................................... 21.8 5.6 3.6 9.5 3.1 7.8

 1,000 to 1,499 .............................. 22.7 13.8 2.5 4.2 2.3 8.3

 1,500 to 1,999 .............................. 16.6 14.2 1.0 0.7 0.7 10.8

 2,000 to 2,499 .............................. 13.5 12.4 0.8 Q 0.2 11.2

 2,500 to 2,999 .............................. 9.3 8.8 0.5 Q Q 12.8

 3,000 to 3,499 .............................. 6.9 6.6 0.3 Q Q 17.2

 3,500 to 3,999 .............................. 4.1 3.8 0.2 Q Q 16.1

 4,000 or More .............................. 8.2 8.0 Q Q Q 12.4

Year of Construction

 1939 or Before .............................. 19.0 12.8 3.3 2.7 Q 8.6

 1940 to 1949 ................................. 7.6 5.9 0.8 0.9 Q 13.1

 1950 to 1959 ................................. 14.2 11.5 1.1 1.4 Q 9.8

 1960 to 1969 ................................. 13.8 9.6 0.9 2.7 0.6 10.4

 1970 to 1979 ................................. 18.8 11.3 1.3 4.3 1.8 8.7

 1980 to 1989 ................................. 18.2 11.1 1.6 3.5 2.0 10.3

 1990 to 1999 ................................. 14.5 10.7 0.5 1.5 1.9 16.6

 2000 to 20013 ............................... 0.9 0.7 Q Q Q 35.7

Urban/Rural Location4

 City ................................................ 49.9 30.2 5.9 11.9 1.8 6.6

 Town ............................................. 18.0 13.0 1.7 2.3 1.1 10.9

 Suburbs ........................................ 21.2 16.5 1.5 2.5 0.8 11.7

 Rural or Open Country .................. 17.9 14.0 0.5 0.3 3.1 14.3

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-4a. Housing Unit Characteristics by Type of Housing Unit,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Type of Housing Unit

RSE

Row

Factors

Single-Family 

Apartments in Buildings With

Two to Four Units Five or More Units Mobile Homess

0.5 0.5 1.5 1.3 1.9

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ............................................. 2.6 0.2 0.4 1.8 Q 24.4

 3 ................................................... 9.2 0.9 1.7 6.1 0.6 12.3

 4 ................................................... 19.0 6.8 3.8 5.8 2.5 8.2

 5 ................................................... 22.2 15.7 1.9 2.7 1.9 8.8

 6 ................................................... 23.0 20.0 1.3 0.5 1.1 10.0

 7 ................................................... 14.0 13.3 0.2 Q 0.5 12.6

 8 ................................................... 9.8 9.6 Q Q Q 10.4

 9 or More ...................................... 7.2 7.1 Q Q Q 14.5

Bedrooms

 None or 1 ...................................... 13.6 2.0 2.6 8.5 0.4 11.0

 2 .................................................... 29.5 14.1 5.0 7.0 3.3 7.2

 3 .................................................... 44.1 38.1 1.7 1.4 2.9 8.5

 4 or More ...................................... 19.8 19.4 Q Q 0.2 10.0

Other Rooms

(Excluding Bathrooms)

 None or 1 ...................................... 4.2 1.0 0.5 2.2 0.5 15.3

 2 .................................................... 39.4 18.1 5.5 11.6 4.3 6.0

 3 .................................................... 35.0 27.7 2.9 3.1 1.4 7.6

 4 .................................................... 18.4 17.2 0.4 0.2 0.5 13.6

 5 or More ...................................... 10.0 9.7 Q Q Q 12.5

Full Bathrooms

 None or 1 ...................................... 58.5 32.9 8.0 13.9 3.6 5.3

 2 .................................................... 41.2 33.6 1.4 3.0 3.1 9.0

 3 or More ...................................... 7.3 7.2 Q Q Q 16.3

Half Bathrooms

 None ............................................ 76.6 47.3 8.2 15.0 6.1 4.1

 1 .................................................... 27.9 24.1 1.2 2.0 0.7 9.6

 2 or More ...................................... 2.5 2.4 Q Q Q 17.1

Number of Stories

 Single-Family Homes .................... 73.7 73.7 -- -- -- 3.1

 1 Story ........................................ 44.2 44.2 -- -- -- 4.4

 2 Stories ...................................... 26.4 26.4 -- -- -- 7.0

 3 or More Stories ........................ 1.6 1.6 -- -- -- 27.0

 Split-Level ................................... 1.3 1.3 -- -- -- 31.7

 Other ........................................... Q -- -- -- -- NF

 Apartments in Buildings With

 2 to 4 Units .................................... 9.5 -- 9.5 -- -- 8.3

 1 Story ........................................ 4.5 -- 4.5 -- -- 12.0

 2 Stories ...................................... 3.9 -- 3.9 -- -- 10.0

 3 or More Stories ........................ 1.1 -- 1.1 -- -- 24.6

 Split-Level ................................... Q -- -- -- -- NF

 Other ........................................... Q -- -- -- -- NF

 Mobile Homes ............................... 6.8 -- -- -- 6.8 10.3

Number of Floors for Apartments

in Buildings With 5 or More Units 17.0 -- -- 17.0 -- 7.7

 1 or 2 Floors ................................ 8.9 -- -- 8.9 -- 10.8

 3 or 4 Floors ................................ 4.7 -- -- 4.7 -- 16.8

 5 to 10 Floors .............................. 2.4 -- -- 2.4 -- 18.5

 11 to 20 Floors ............................ 0.9 -- -- 0.9 -- 27.6

 More than 20 Floors .................... Q -- -- -- -- NF

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-4a. Housing Unit Characteristics by Type of Housing Unit,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Type of Housing Unit

RSE

Row

Factors

Single-Family 

Apartments in Buildings With

Two to Four Units Five or More Units Mobile Homess

0.5 0.5 1.5 1.3 1.9

Foundation/Basement of

Single-Family Homes and

Apartments in Buildings With

2 to 4 Units (More than one may

apply)

 Basement ...................................... 39.1 35.4 3.8 -- -- 7.0

 Crawlspace ................................... 24.2 23.2 1.0 -- -- 10.6

 Concrete Slab ............................... 29.5 25.4 4.1 -- -- 7.4

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ............................ 23.8 -- -- 17.0 6.8 6.3

Heated Basement in

Single-Family Homes and

Apartments in Buildings

With 2 to 4 Units

 Yes ................................................ 28.3 26.1 2.2 -- -- 8.1

 All ................................................ 22.1 20.5 1.7 -- -- 9.2

 Part ............................................. 6.2 5.7 0.5 -- -- 13.9

 No ................................................. 10.8 9.2 1.5 -- -- 11.0

 No Basement ................................ 44.0 38.3 5.7 -- -- 6.1

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ............................ 23.8 -- -- 17.0 6.8 6.3

Attic in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes ................................................ 24.6 23.1 1.5 -- -- 11.1

 Finished ...................................... 3.5 3.2 0.3 -- -- 20.5

 Unfinished ................................... 21.1 19.9 1.2 -- -- 12.1

 No Attic ......................................... 58.6 50.6 8.0 -- -- 4.9

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ............................ 23.8 -- -- 17.0 6.8 6.3

Heated Attic in Single-Family

Homes and Apartments in

Buildings With 2 to 4 Units

 Yes ................................................ 4.5 4.2 0.3 -- -- 19.6

 Fully Heated ................................ 2.7 2.4 0.2 -- -- 22.8

 Partially Heated .......................... 1.8 1.7 Q -- -- 27.7

 Attic Not Heated ............................ 20.1 18.9 1.2 -- -- 11.8

 No Attic ......................................... 58.6 50.6 8.0 -- -- 4.9

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ............................ 23.8 -- -- 17.0 6.8 6.3

Garage/Carport

(single-family and mobile homes)

 Yes ................................................ 58.4 56.4 -- -- 1.9 5.0

 Attached ...................................... 37.1 36.9 -- -- Q 6.5

 1-Car Garage ............................ 10.8 10.7 -- -- Q 14.7

 2-Car Garage ............................ 24.1 23.9 -- -- Q 8.2

 3 or more Car Garage ............... 2.3 2.3 -- -- Q 28.3

 Detached .................................... 17.0 16.0 -- -- 1.0 9.9

 1-Car Garage ............................ 6.9 6.5 -- -- 0.4 14.0

 2-Car Garage ............................ 8.7 8.2 -- -- 0.6 12.5

 3 or more Car Garage ............... 1.4 1.3 -- -- Q 28.4

 Carport (only) .............................. 4.2 3.5 -- -- 0.7 17.9

 No ................................................. 22.1 17.3 -- -- 4.9 8.6

 Not Asked (Apartments) ............... 26.5 -- 9.5 17.0 -- 5.9

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-4a. Housing Unit Characteristics by Type of Housing Unit,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Type of Housing Unit

RSE

Row

Factors

Single-Family 

Apartments in Buildings With

Two to Four Units Five or More Units Mobile Homess

0.5 0.5 1.5 1.3 1.9

Fuels Used For Any Use

(more than one often used)

 Electricity ...................................... 107.0 73.7 9.5 17.0 6.8 4.5

 Natural Gas ................................... 66.9 48.5 6.2 9.9 2.3 6.0

 Wood ............................................ 14.5 13.2 0.4 0.3 0.6 16.2

 Fuel Oil ......................................... 8.7 6.4 0.6 1.4 0.2 16.8

 LPG ............................................... 9.4 7.6 Q Q 1.6 14.1

 Kerosene ...................................... 2.9 2.2 Q Q 0.6 15.7

 Solar ............................................ 1.1 1.0 Q Q Q 32.3

Main Heating Fuel

 Natural Gas ................................... 59.3 44.3 5.6 7.2 2.2 6.5

 Electricity ...................................... 31.1 -- 3.1 8.0 -- 8.9

 Fuel Oil ......................................... 8.0 5.9 0.6 1.3 0.2 17.2

 LPG ............................................... 5.0 3.9 Q Q 1.0 18.6

 Wood ............................................ 2.0 1.9 Q Q Q 25.1

 Kerosene ...................................... 0.8 0.5 Q Q 0.3 27.7

 Solar ............................................. Q Q Q Q Q NF

 Other/None ................................... 0.7 0.3 Q 0.4 Q 27.1

Natural Gas Available in

Neighborhood

 Yes ................................................ 77.7 54.4 7.4 12.6 3.4 5.3

 No ................................................. 29.3 19.3 2.1 4.4 3.4 10.1

1 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this report, the

heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65 degrees Fahrenheit. 

A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 2 Does not include floorspace for unheated garages. 3 New construction for 2001 includes only those housing units built and occupied between January and the April-August period when the household interviews were

conducted. 4 Based on the household respondent’s description rather than the Federal Government definition.

-- = Data not applicable.

NF = No applicable RSE row factor.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2001 Residential Energy Consumption Survey.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-5a. Housing Unit Characteristics by Type of Owner-Occupied Housing Unit,

 Million U.S. Households, 2001

Housing Unit

Characteristics

RSE Column Factor:

Total

OwnerOccupied

Units

Type of Owner-Occupied Housing Unit

RSE

Row

Factors

Single-Family 

Apartments in Buildings With

Two to Four Units Five or More Units Mobile Homes

0.4 0.4 1.8 2.1 1.4

Total ............................................... 72.7 63.2 2.1 1.8 5.7 6.7

Census Region and Division

 Northeast ...................................... 13.0 10.8 1.1 0.5 0.6 11.4

 New England .............................. 3.5 3.1 0.2 Q 0.1 16.9

 Middle Atlantic ............................ 9.5 7.7 0.9 0.4 0.4 13.4

 Midwest ......................................... 17.5 16.0 0.3 Q 1.0 10.3

 East North Central ...................... 11.8 10.8 0.2 Q 0.7 10.7

 West North Central ..................... 5.6 5.2 Q Q 0.3 20.7

 South ............................................ 28.1 24.5 0.5 Q 2.6 10.4

 South Atlantic .............................. 14.8 12.7 Q Q 1.2 12.8

 East South Central ...................... 5.1 4.4 Q Q 0.7 13.9

 West South Central ..................... 8.2 7.4 Q Q 0.7 11.1

 West .............................................. 14.1 11.9 0.2 0.5 1.5 15.0

 Mountain ..................................... 4.7 3.8 Q Q 0.6 23.0

 Pacific ......................................... 9.4 8.1 Q 0.3 0.8 16.9

Metropolitan Statistical Area

 Urban ............................................ 56.3 49.4 2.0 1.6 3.4 8.0

 Central City ................................. 23.2 20.2 0.9 0.9 1.1 12.8

 Suburban .................................... 33.1 29.1 1.1 0.7 2.2 13.4

 Rural ............................................. 16.4 13.8 Q Q 2.3 11.6

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ................. 6.9 6.3 0.2 Q 0.4 30.0

 5,500 to 7,000 HDD .................... 19.5 16.9 0.8 0.4 1.5 16.0

 4,000 to 5,499 HDD .................... 15.7 13.6 0.7 0.5 1.0 18.8

 Fewer than 4,000 HDD ............... 13.3 12.1 Q Q 1.1 27.7

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................. 17.2 14.3 0.3 0.9 1.7 19.9

Total Floorspace Category2

(square feet)

 Fewer than 500 ............................. 0.7 Q Q Q 0.3 38.4

 500 to 999 .................................... 6.6 3.4 Q 0.5 2.4 15.3

 1,000 to 1,499 .............................. 14.3 10.8 0.6 0.9 2.0 13.3

 1,500 to 1,999 .............................. 13.3 12.1 0.3 0.2 0.7 14.7

 2,000 to 2,499 .............................. 11.5 10.9 0.4 Q 0.2 14.7

 2,500 to 2,999 .............................. 8.2 8.1 Q Q Q 14.0

 3,000 to 3,499 .............................. 6.2 6.1 Q Q Q 21.5

 3,500 to 3,999 .............................. 3.8 3.7 Q Q Q 18.6

 4,000 or More .............................. 8.0 7.9 Q Q Q 15.3

Year of Construction

 1939 or Before .............................. 11.4 10.3 0.9 Q Q 11.9

 1940 to 1949 ................................. 5.1 4.7 0.3 Q Q 20.9

 1950 to 1959 ................................. 10.1 9.7 Q Q Q 13.1

 1960 to 1969 ................................. 9.2 8.3 Q 0.4 0.5 16.0

 1970 to 1979 ................................. 11.8 9.6 Q 0.5 1.5 13.6

 1980 to 1989 ................................. 12.7 10.0 0.4 0.6 1.6 16.3

 1990 to 1999 ................................. 11.7 9.9 Q Q 1.7 19.6

 2000 to 20013 ............................... 0.8 0.7 Q Q Q 46.2

Urban/Rural Location4

 City ................................................ 28.6 24.7 1.2 1.2 1.5 10.0

 Town ............................................. 12.2 11.0 0.2 Q 0.8 17.7

 Suburbs ........................................ 16.7 15.1 0.6 0.4 0.7 15.9

 Rural or Open Country .................. 15.1 12.4 Q Q 2.6 14.3

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-5a. Housing Unit Characteristics by Type of Owner-Occupied Housing Unit,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

OwnerOccupied

Units

Type of Owner-Occupied Housing Unit

RSE

Row

Factors

Single-Family 

Apartments in Buildings With

Two to Four Units Five or More Units Mobile Homes

0.4 0.4 1.8 2.1 1.4

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ............................................. 0.3 QQQQ 86.3

 3 ................................................... 1.3 0.4 Q 0.3 0.4 25.7

 4 ................................................... 7.8 4.4 0.5 0.7 2.1 14.5

 5 ................................................... 15.1 12.6 0.5 0.5 1.5 13.5

 6 ................................................... 19.4 17.6 0.6 Q 1.0 10.8

 7 ................................................... 12.7 12.1 Q Q 0.4 14.3

 8 ................................................... 9.4 9.2 Q Q Q 13.2

 9 or More ...................................... 6.8 6.8 Q Q Q 18.8

Bedrooms

 None or 1 ...................................... 2.3 1.1 0.3 0.5 0.4 22.3

 2 .................................................... 14.9 10.2 1.1 1.0 2.6 11.2

 3 .................................................... 37.4 33.9 0.7 0.2 2.5 10.5

 4 or More ...................................... 18.1 18.0 Q Q Q 10.8

Other Rooms

(Excluding Bathrooms)

 None or 1 ...................................... 1.3 0.8 Q Q 0.4 27.4

 2 .................................................... 18.7 13.4 0.8 1.0 3.4 11.5

 3 .................................................... 26.6 23.8 0.9 0.6 1.3 11.0

 4 .................................................... 16.8 16.0 0.2 Q 0.5 14.9

 5 or More ...................................... 9.3 9.1 Q Q Q 16.6

Full Bathrooms

 None or 1 ...................................... 30.3 25.6 1.4 0.8 2.6 9.4

 2 .................................................... 35.4 30.7 0.7 1.0 3.0 10.8

 3 or More ...................................... 7.0 6.9 Q Q Q 20.7

Half Bathrooms

 None ............................................ 47.0 38.9 1.5 1.4 5.2 7.1

 1 .................................................... 23.7 22.3 0.5 Q 0.5 11.4

 2 or More ...................................... 2.0 1.9 Q Q Q 24.4

Number of Stories

 Single-Family Homes .................... 63.2 63.2 -- -- -- 4.7

 1 Story ........................................ 37.4 37.4 -- -- -- 6.6

 2 Stories ...................................... 23.1 23.1 -- -- -- 9.4

 3 or More Stories ........................ 1.4 1.4 -- -- -- 38.1

 Split-Level ................................... 1.3 1.3 -- -- -- 38.4

 Other ........................................... Q -- -- -- -- NF

 Apartments in Buildings With

 2 to 4 Units .................................... 2.1 -- 2.1 -- -- 17.6

 1 Story ........................................ 0.6 -- 0.6 -- -- 30.5

 2 Stories ...................................... 1.2 -- 1.2 -- -- 18.5

 3 or More Stories ........................ 0.3 -- 0.3 -- -- 38.5

 Split-Level ................................... Q -- -- -- -- NF

 Other ........................................... Q -- -- -- -- NF

 Mobile Homes ............................... 5.7 -- -- -- 5.7 14.3

Number of Floors for Apartments

in Buildings With 5 or More Units 1.8 -- -- 1.8 -- 25.8

 1 or 2 Floors ................................ 1.0 -- -- 1.0 -- 38.2

 3 or 4 Floors ................................ Q -- -- Q -- NF

 5 to 10 Floors .............................. 0.4 -- -- 0.4 -- 26.8

 11 to 20 Floors ............................ Q -- -- Q -- NF

 More than 20 Floors .................... Q -- -- Q -- NF

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-5a. Housing Unit Characteristics by Type of Owner-Occupied Housing Unit,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

OwnerOccupied

Units

Type of Owner-Occupied Housing Unit

RSE

Row

Factors

Single-Family 

Apartments in Buildings With

Two to Four Units Five or More Units Mobile Homes

0.4 0.4 1.8 2.1 1.4

Foundation/Basement of

Single-Family Homes and

Apartments in Buildings With

2 to 4 Units (More than one may

apply)

 Basement ...................................... 32.3 31.2 1.1 -- -- 9.4

 Crawlspace ................................... 19.7 19.6 0.2 -- -- 13.5

 Concrete Slab ............................... 22.3 21.6 0.7 -- -- 12.1

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ............................ 7.4 -- -- 1.8 5.7 12.7

Heated Basement in

Single-Family Homes and

Apartments in Buildings

With 2 to 4 Units

 Yes ................................................ 24.6 23.7 0.9 -- -- 10.3

 All ................................................ 19.4 18.6 0.7 -- -- 11.6

 Part ............................................. 5.2 5.1 Q -- -- 18.8

 No ................................................. 7.7 7.5 0.2 -- -- 16.4

 No Basement ................................ 32.9 32.0 1.0 -- -- 10.1

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ............................ 7.4 -- -- 1.8 5.7 12.7

Attic in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes ................................................ 21.7 21.1 0.6 -- -- 11.8

 Finished ...................................... 2.9 2.8 Q -- -- 28.0

 Unfinished ................................... 18.8 18.3 0.5 -- -- 12.4

 No Attic ......................................... 43.6 42.1 1.4 -- -- 8.1

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ............................ 7.4 -- -- 1.8 5.7 12.7

Heated Attic in Single-Family

Homes and Apartments in

Buildings With 2 to 4 Units

 Yes ................................................ 3.9 3.8 Q -- -- 23.9

 Fully Heated ................................ 2.3 2.2 Q -- -- 27.4

 Partially Heated .......................... 1.6 1.6 Q -- -- 35.7

 Attic Not Heated ............................ 17.8 17.3 0.5 -- -- 12.3

 No Attic ......................................... 43.6 42.1 1.4 -- -- 8.1

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ............................ 7.4 -- -- 1.8 5.7 12.7

Garage/Carport

(single-family and mobile homes)

 Yes ................................................ 52.7 50.9 -- -- 1.8 6.9

 Attached ...................................... 34.5 34.3 -- -- -- 8.3

 1-Car Garage ............................ 9.4 9.3 -- -- -- 18.4

 2-Car Garage ............................ 22.8 22.7 -- -- -- 10.5

 3 or more Car Garage ............... 2.3 2.3 -- -- -- 35.0

 Detached .................................... 14.6 13.6 -- -- -- 13.4

 1-Car Garage ............................ 5.3 5.0 -- -- -- 18.7

 2-Car Garage ............................ 8.0 7.5 -- -- -- 17.5

 3 or more Car Garage ............... 1.3 1.2 -- -- -- 36.0

 Carport (only) .............................. 3.6 3.0 -- -- 0.6 22.3

 No ................................................. 16.2 12.3 Q -- 3.9 11.8

 Not Asked (Apartments) ............... 3.8 -- -- 1.8 -- 14.4

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-5a. Housing Unit Characteristics by Type of Owner-Occupied Housing Unit,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

OwnerOccupied

Units

Type of Owner-Occupied Housing Unit

RSE

Row

Factors

Single-Family 

Apartments in Buildings With

Two to Four Units Five or More Units Mobile Homes

0.4 0.4 1.8 2.1 1.4

Fuels Used For Any Use

(more than one often used)

 Electricity ...................................... 72.7 63.2 2.1 1.8 5.7 6.7

 Natural Gas ................................... 45.3 41.1 1.3 0.9 2.0 9.1

 Wood ............................................ 13.0 12.1 Q Q 0.5 15.4

 Fuel Oil ......................................... 6.6 5.8 0.3 0.2 0.2 17.7

 LPG ............................................... 8.0 6.6 Q Q 1.4 18.0

 Kerosene ...................................... 2.3 1.7 Q Q 0.5 20.5

 Solar ............................................ 1.0 1.0 Q Q Q 40.8

Main Heating Fuel

 Natural Gas ................................... 41.3 37.7 1.1 0.6 1.9 10.2

 Electricity ...................................... 18.4 14.6 0.6 0.8 2.4 17.0

 Fuel Oil ......................................... 6.0 5.4 0.3 Q Q 24.2

 LPG ............................................... 4.2 3.3 Q Q 0.9 23.3

 Wood ............................................ 1.7 1.6 Q Q Q 33.4

 Kerosene ...................................... 0.7 0.4 Q Q 0.3 37.6

 Solar ............................................. Q Q Q Q Q NF

 Other/None ................................... 0.3 0.2 Q Q Q 37.2

Natural Gas Available in

Neighborhood

 Yes ................................................ 51.6 46.2 1.4 1.1 2.9 8.4

 No ................................................. 21.1 17.0 0.6 0.7 2.7 15.2

1 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this report, the

heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65 degrees Fahrenheit. 

A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 2 Does not include floorspace for unheated garages. 3 New construction for 2001 includes only those housing units built and occupied between January and the April-August period when the household interviews were

conducted. 4 Based on the household respondent’s description rather than the Federal Government definition.

-- = Data not applicable.

NF = No applicable RSE row factor.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2001 Residential Energy Consumption Survey.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-6a. Housing Unit Characteristics by Type of Rented Housing Unit,

 Million U.S. Households, 2001

Housing Unit

Characteristics

RSE Column Factor:

Total

Rented

Units

Type of Rented Housing Unit

RSE

Row

Factors

Single-Family 

Apartments in Buildings With

Two to Four Units Five or More Units Mobile Homes

0.6 0.8 1.1 0.9 2.2

Total ............................................... 34.3 10.5 7.4 15.2 1.1 6.9

Census Region and Division

 Northeast ...................................... 7.3 1.2 2.0 4.0 Q 11.3

 New England .............................. 1.9 0.4 0.9 0.6 Q 21.2

 Middle Atlantic ............................ 5.4 0.8 1.1 3.4 Q 13.7

 Midwest ......................................... 7.0 2.3 1.9 2.6 0.2 16.0

 East North Central ...................... 5.3 1.6 1.6 1.9 Q 19.5

 West North Central ..................... 1.8 0.7 0.3 0.7 Q 32.7

 South ............................................ 10.8 4.1 2.1 3.9 0.6 12.2

 South Atlantic .............................. 5.5 2.1 1.1 2.1 Q 18.9

 East South Central ...................... 1.7 0.7 Q 0.4 Q 20.0

 West South Central ..................... 3.6 1.4 0.6 1.5 Q 14.9

 West .............................................. 9.2 2.8 1.4 4.7 0.2 12.5

 Mountain ..................................... 2.0 0.8 0.4 0.6 Q 27.3

 Pacific ......................................... 7.2 2.0 1.0 4.1 Q 12.9

Metropolitan Statistical Area

 Urban ............................................ 29.2 7.8 6.1 14.5 0.7 7.7

 Central City ................................. 16.9 4.4 4.0 8.3 0.2 11.3

 Suburban .................................... 12.3 3.5 2.1 6.2 0.5 12.9

 Rural ............................................. 5.1 2.7 1.3 0.7 0.4 16.5

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ................. 2.4 1.0 0.6 0.7 Q 37.5

 5,500 to 7,000 HDD .................... 9.1 2.2 2.7 3.9 0.3 15.5

 4,000 to 5,499 HDD .................... 8.3 2.1 1.5 4.5 Q 17.0

 Fewer than 4,000 HDD ............... 7.6 2.7 1.2 3.5 Q 15.6

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................. 6.8 2.4 1.4 2.6 0.4 16.2

Total Floorspace Category2

(square feet)

 Fewer than 500 ............................. 3.2 0.3 0.4 2.4 Q 21.8

 500 to 999 .................................... 15.2 2.1 3.4 9.0 0.7 10.0

 1,000 to 1,499 .............................. 8.4 3.0 1.9 3.3 0.2 12.3

 1,500 to 1,999 .............................. 3.3 2.1 0.7 0.5 Q 19.1

 2,000 to 2,499 .............................. 2.0 1.4 0.4 Q Q 18.6

 2,500 to 2,999 .............................. 1.1 0.7 0.4 Q Q 28.8

 3,000 to 3,499 .............................. 0.6 0.5 Q Q Q 31.0

 3,500 to 3,999 .............................. 0.2 QQQQ 48.9

 4,000 or More .............................. 0.2 QQQQ 56.8

Year of Construction

 1939 or Before .............................. 7.6 2.6 2.4 2.6 Q 11.9

 1940 to 1949 ................................. 2.6 1.2 0.5 0.8 Q 18.5

 1950 to 1959 ................................. 4.1 1.8 1.0 1.2 Q 16.9

 1960 to 1969 ................................. 4.5 1.3 0.8 2.3 Q 14.5

 1970 to 1979 ................................. 7.0 1.7 1.1 3.8 0.3 12.5

 1980 to 1989 ................................. 5.5 1.0 1.2 2.9 0.4 16.3

 1990 to 1999 ................................. 2.8 0.8 0.4 1.5 Q 27.1

 2000 to 20013 ............................... Q Q Q Q Q NF

Urban/Rural Location4

 City ................................................ 21.3 5.5 4.7 10.8 0.3 9.3

 Town ............................................. 5.8 2.0 1.5 2.1 0.3 14.7

 Suburbs ........................................ 4.5 1.4 0.9 2.1 Q 22.2

 Rural or Open Country .................. 2.7 1.6 0.4 0.3 0.5 22.4

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-6a. Housing Unit Characteristics by Type of Rented Housing Unit,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Rented

Units

Type of Rented Housing Unit

RSE

Row

Factors

Single-Family 

Apartments in Buildings With

Two to Four Units Five or More Units Mobile Homes

0.6 0.8 1.1 0.9 2.2

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ............................................. 2.3 Q 0.4 1.8 Q 21.9

 3 ................................................... 7.9 0.4 1.6 5.7 Q 15.0

 4 ................................................... 11.2 2.4 3.3 5.1 0.4 11.3

 5 ................................................... 7.1 3.1 1.3 2.2 0.4 12.7

 6 ................................................... 3.6 2.4 0.7 0.4 Q 20.2

 7 ................................................... 1.3 1.2 Q Q Q 22.2

 8 ................................................... 0.5 0.4 Q Q Q 31.1

 9 or More ...................................... 0.4 0.4 Q Q Q 37.3

Bedrooms

 None or 1 ...................................... 11.3 0.9 2.3 8.0 Q 11.8

 2 .................................................... 14.6 3.9 4.0 6.0 0.7 10.3

 3 .................................................... 6.7 4.2 1.0 1.1 0.4 16.0

 4 or More ...................................... 1.7 1.4 Q Q Q 19.2

Other Rooms

(Excluding Bathrooms)

 None or 1 ...................................... 2.9 0.2 0.5 2.1 Q 23.3

 2 .................................................... 20.7 4.7 4.7 10.5 0.8 8.2

 3 .................................................... 8.4 3.9 1.9 2.5 Q 11.6

 4 .................................................... 1.5 1.2 0.2 Q Q 21.8

 5 or More ...................................... 0.7 0.6 Q Q Q 26.7

Full Bathrooms

 None or 1 ...................................... 28.2 7.4 6.6 13.2 1.0 7.5

 2 .................................................... 5.8 2.9 0.8 2.1 Q 18.6

 3 or More ...................................... 0.2 0.2 Q Q Q 55.1

Half Bathrooms

 None ............................................ 29.5 8.3 6.7 13.6 0.9 7.3

 1 .................................................... 4.3 1.7 0.7 1.7 Q 19.2

 2 or More ...................................... 0.5 0.4 Q Q Q 44.7

Number of Stories

 Single-Family Homes .................... 10.5 10.5 -- -- -- 7.6

 1 Story ........................................ 6.9 6.9 -- -- -- 9.0

 2 Stories ...................................... 3.4 3.4 -- -- -- 14.3

 3 or More Stories ........................ Q Q -- -- -- NF

 Split-Level ................................... Q Q -- -- -- NF

 Other ........................................... Q -- -- -- -- NF

 Apartments in Buildings With

 2 to 4 Units .................................... 7.4 -- 7.4 -- -- 9.8

 1 Story ........................................ 4.0 -- 4.0 -- -- 14.4

 2 Stories ...................................... 2.7 -- 2.7 -- -- 11.7

 3 or More Stories ........................ 0.8 -- 0.8 -- -- 30.1

 Split-Level ................................... Q -- -- -- -- NF

 Other ........................................... Q -- -- -- -- NF

 Mobile Homes ............................... 1.1 -- -- -- 1.1 16.2

Number of Floors for Apartments

in Buildings With 5 or More Units 15.2 -- -- 15.2 -- 8.3

 1 or 2 Floors ................................ 7.9 -- -- 7.9 -- 11.9

 3 or 4 Floors ................................ 4.5 -- -- 4.5 -- 18.9

 5 to 10 Floors .............................. 2.0 -- -- 2.0 -- 23.1

 11 to 20 Floors ............................ 0.8 -- -- 0.8 -- 31.9

 More than 20 Floors .................... Q -- -- Q -- NF

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-6a. Housing Unit Characteristics by Type of Rented Housing Unit,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Rented

Units

Type of Rented Housing Unit

RSE

Row

Factors

Single-Family 

Apartments in Buildings With

Two to Four Units Five or More Units Mobile Homes

0.6 0.8 1.1 0.9 2.2

Foundation/Basement of

Single-Family Homes and

Apartments in Buildings With

2 to 4 Units (More than one may

apply)

 Basement ...................................... 6.8 4.2 2.7 -- -- 12.0

 Crawlspace ................................... 4.5 3.6 0.8 -- -- 14.1

 Concrete Slab ............................... 7.2 3.8 3.4 -- -- 12.3

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ............................ 16.4 -- -- 15.2 1.1 8.2

Heated Basement in

Single-Family Homes and

Apartments in Buildings

With 2 to 4 Units

 Yes ................................................ 3.8 2.4 1.3 -- -- 15.6

 All ................................................ 2.8 1.8 0.9 -- -- 17.1

 Part ............................................. 1.0 0.6 0.4 -- -- 27.8

 No ................................................. 3.0 1.7 1.3 -- -- 14.9

 No Basement ................................ 11.1 6.3 4.8 -- -- 9.1

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ............................ 16.4 -- -- 15.2 1.1 8.2

Attic in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes ................................................ 2.9 2.0 0.9 -- -- 20.7

 Finished ...................................... 0.6 0.4 0.2 -- -- 39.5

 Unfinished ................................... 2.3 1.6 0.7 -- -- 23.6

 No Attic ......................................... 15.0 8.5 6.6 -- -- 8.2

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ............................ 16.4 -- -- 15.2 1.1 8.2

Heated Attic in Single-Family

Homes and Apartments in

Buildings With 2 to 4 Units

 Yes ................................................ 0.6 0.4 0.2 -- -- 41.0

 Fully Heated ................................ 0.3 Q Q -- -- 63.3

 Partially Heated .......................... 0.3 Q Q -- -- 56.0

 Attic Not Heated ............................ 2.3 1.6 0.7 -- -- 22.9

 No Attic ......................................... 15.0 8.5 6.6 -- -- 8.2

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ............................ 16.4 -- -- 15.2 1.1 8.2

Garage/Carport

(single-family and mobile homes)

 Yes ................................................ 5.7 5.5 -- -- Q 10.0

 Attached ...................................... 2.7 2.7 -- -- -- 15.6

 1-Car Garage ............................ 1.4 1.4 -- -- -- 23.8

 2-Car Garage ............................ 1.2 1.2 -- -- -- 18.7

 3 or more Car Garage ............... Q Q -- -- -- NF

 Detached .................................... 2.4 2.4 -- -- -- 15.9

 1-Car Garage ............................ 1.6 1.5 -- -- -- 18.2

 2-Car Garage ............................ 0.7 0.7 -- -- -- 26.8

 3 or more Car Garage ............... Q Q -- -- -- NF

 Carport (only) .............................. 0.6 0.5 -- -- Q 34.6

 No ................................................. 5.9 5.0 Q -- 1.0 10.9

 Not Asked (Apartments) ............... 22.6 -- -- 15.2 -- 7.1

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-6a. Housing Unit Characteristics by Type of Rented Housing Unit,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Rented

Units

Type of Rented Housing Unit

RSE

Row

Factors

Single-Family 

Apartments in Buildings With

Two to Four Units Five or More Units Mobile Homes

0.6 0.8 1.1 0.9 2.2

Fuels Used For Any Use

(more than one often used)

 Electricity ...................................... 34.3 10.5 7.4 15.2 1.1 6.9

 Natural Gas ................................... 21.7 7.3 5.0 9.0 0.3 9.2

 Wood ............................................ 1.5 1.1 Q 0.2 Q 28.5

 Fuel Oil ......................................... 2.1 0.6 0.3 1.2 Q 19.0

 LPG ............................................... 1.4 1.0 Q Q 0.2 19.6

 Kerosene ...................................... 0.6 0.5 Q Q Q 34.2

 Solar ............................................ Q Q Q Q Q NF

Main Heating Fuel

 Natural Gas ................................... 18.0 6.6 4.5 6.6 0.3 9.9

 Electricity ...................................... 12.7 2.4 2.5 7.2 0.6 11.7

 Fuel Oil ......................................... 2.0 0.6 0.3 1.1 Q 18.8

 LPG ............................................... 0.7 0.5 Q Q Q 31.1

 Wood ............................................ 0.3 0.3 Q Q Q 38.9

 Kerosene ...................................... Q Q Q Q Q NF

 Solar ............................................. Q Q Q Q Q NF

 Other/None ................................... 0.3 Q Q 0.3 Q 55.6

Natural Gas Available in

Neighborhood

 Yes ................................................ 26.1 8.2 5.9 11.5 0.5 8.2

 No ................................................. 8.2 2.3 1.5 3.7 0.7 14.3

1 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this report, the

heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65 degrees Fahrenheit. 

A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 2 Does not include floorspace for unheated garages. 3 New construction for 2001 includes only those housing units built and occupied between January and the April-August period when the household interviews were

conducted. 4 Based on the household respondent’s description rather than the Federal Government definition.

-- = Data not applicable.

NF = No applicable RSE row factor.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2001 Residential Energy Consumption Survey.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-7a. Housing Unit Characteristics by Four Most Populated States,

 Million U.S. Households, 2001

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

Four Most Populated States

RSE

Row

Factors

New York California Texas Florida

0.4 1.0 1.0 1.3 1.7

Total .............................................................. 107.0 7.1 12.3 7.7 6.3 NE

Census Region and Division

 Northeast ..................................................... 20.3 7.1 -- -- -- NF

 New England ............................................. 5.4 Q -- -- -- NF

 Middle Atlantic ........................................... 14.8 7.1 -- -- -- NF

 Midwest ....................................................... 24.5 -- -- -- -- NF

 East North Central ..................................... 17.1 -- -- -- -- NF

 West North Central .................................... 7.4 -- -- -- -- NF

 South ........................................................... 38.9 -- -- 7.7 6.3 NF

 South Atlantic ............................................ 20.3 -- -- Q 6.3 NF

 East South Central .................................... 6.8 -- -- Q Q NF

 West South Central ................................... 11.8 -- -- 7.7 Q NF

 West ............................................................ 23.3 -- 12.3 -- -- NF

 Mountain .................................................... 6.7 -- Q -- -- NF

 Pacific ........................................................ 16.6 -- 12.3 -- -- NF

Metropolitan Statistical Area

 Urban ........................................................... 85.5 6.5 11.8 6.5 5.7 1.1

 Central City ................................................ 40.0 3.7 6.1 3.7 2.5 10.1

 Suburban ................................................... 45.5 2.8 5.8 2.8 3.3 10.6

 Rural ............................................................ 21.5 0.6 0.5 1.2 0.6 8.0

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ............................... 9.2 0.5 Q Q Q 22.9

 5,500 to 7,000 HDD ................................... 28.6 2.5 Q Q Q 11.4

 4,000 to 5,499 HDD ................................... 24.0 4.1 0.6 Q Q 10.8

 Fewer than 4,000 HDD .............................. 21.0 Q 10.7 Q Q 6.6

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................................ 24.1 Q 1.1 7.1 6.3 12.3

Total Floorspace Category2

(square feet)

 Fewer than 500 ........................................... 3.9 0.7 0.7 0.4 Q 19.2

 500 to 999 .................................................. 21.8 1.4 3.6 1.5 1.2 10.6

 1,000 to 1,499 ............................................ 22.7 1.4 3.0 2.1 1.5 8.7

 1,500 to 1,999 ............................................ 16.6 0.9 1.7 1.3 1.3 8.2

 2,000 to 2,499 ............................................ 13.5 0.9 1.3 0.6 0.8 16.8

 2,500 to 2,999 ............................................ 9.3 0.6 0.7 0.4 0.3 17.3

 3,000 to 3,499 ............................................ 6.9 0.3 0.5 0.3 Q 20.0

 3,500 to 3,999 ............................................ 4.1 0.2 0.4 0.5 0.1 21.4

 4,000 or More ............................................. 8.2 0.6 0.5 0.6 0.4 17.3

Type and Ownership of Housing Unit

 Single-Family Detached .............................. 63.1 2.2 6.9 5.3 4.2 5.6

 Owned ....................................................... 55.7 2.0 5.6 4.5 3.8 6.5

 Rented ....................................................... 7.4 0.1 1.3 0.8 0.5 14.9

 Single-Family Attached ............................... 10.6 0.9 1.0 0.3 0.4 22.7

 Owned ....................................................... 7.5 0.7 0.6 Q Q 28.4

 Rented ....................................................... 3.1 0.2 0.4 0.2 Q 23.7

 Apartments in Buildings With

 2 to 4 Units .................................................. 9.5 1.3 0.9 0.4 0.4 21.6

 Owned ....................................................... 2.1 0.6 Q Q Q 33.5

 Rented ....................................................... 7.4 0.7 0.8 0.4 0.2 22.9

 Apartments in Buildings With

 5 or More Units ............................................ 17.0 2.6 3.2 1.3 Q 8.6

 Owned ....................................................... 1.8 0.4 Q Q Q 32.4

 Rented ....................................................... 15.2 2.2 3.0 1.2 0.5 11.3

 Mobile Homes ............................................. 6.8 Q Q Q 0.3 21.1

 Owned ....................................................... 5.7 Q Q 0.3 0.1 27.1

 Rented ....................................................... 1.1 Q Q Q 0.2 33.4

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-7a. Housing Unit Characteristics by Four Most Populated States,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

Four Most Populated States

RSE

Row

Factors

New York California Texas Florida

0.4 1.0 1.0 1.3 1.7

Ownership of Unit

 Owned ......................................................... 72.7 3.9 6.7 4.9 4.9 3.9

 Rented ......................................................... 34.3 3.2 5.7 2.7 1.4 7.0

Year of Construction

 1939 or Before ............................................. 19.0 2.5 1.5 0.9 Q 12.2

 1940 to 1949 ............................................... 7.6 1.1 0.9 0.5 0.1 20.9

 1950 to 1959 ............................................... 14.2 1.0 2.1 0.9 0.9 11.4

 1960 to 1969 ............................................... 13.8 1.1 2.2 0.9 0.7 12.3

 1970 to 1979 ............................................... 18.8 0.6 2.3 1.6 1.5 11.1

 1980 to 1989 ............................................... 18.2 0.3 1.9 1.6 2.0 12.2

 1990 to 1999 ............................................... 14.5 0.5 1.5 1.2 1.2 16.9

 2000 to 20013 .............................................. 0.9 Q Q Q Q 40.8

Urban/Rural Location4

 City .............................................................. 49.9 3.4 8.5 4.4 2.9 5.1

 Town ............................................................ 18.0 1.1 1.6 1.0 0.8 13.4

 Suburbs ....................................................... 21.2 1.9 1.4 1.4 2.1 9.6

 Rural or Open Country ................................ 17.9 0.7 0.9 0.9 0.5 14.2

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ........................................................... 2.6 0.2 0.5 Q Q 26.2

 3 ................................................................. 9.2 1.0 1.6 0.8 0.3 14.2

 4 ................................................................. 19.0 1.6 3.0 1.0 0.8 9.3

 5 ................................................................. 22.2 1.4 2.2 1.9 1.8 10.4

 6 ................................................................. 23.0 1.0 2.4 1.7 1.4 9.8

 7 ................................................................. 14.0 0.9 1.2 1.0 0.9 11.9

 8 ................................................................. 9.8 0.5 0.8 0.6 0.7 14.8

 9 or More ..................................................... 7.2 0.5 0.6 0.5 0.4 21.2

Bedrooms

 None or 1 ..................................................... 13.6 1.4 2.2 1.3 0.4 13.4

 2 .................................................................. 29.5 2.4 4.0 1.5 2.0 9.1

 3 .................................................................. 44.1 2.2 4.2 3.4 2.7 7.7

 4 or More ..................................................... 19.8 1.2 2.0 1.6 1.3 12.1

Other Rooms

(Excluding Bathrooms)

 None or 1 ..................................................... 4.2 0.3 0.8 Q 0.2 20.6

 2 .................................................................. 39.4 3.0 5.8 3.0 1.8 7.2

 3 .................................................................. 35.0 2.1 3.4 2.6 2.7 8.2

 4 .................................................................. 18.4 1.0 1.7 1.2 1.2 11.9

 5 or More ..................................................... 10.0 0.7 0.7 0.7 0.4 16.3

Full Bathrooms

 None or 1 ..................................................... 58.5 5.3 6.0 3.7 2.0 7.1

 2 .................................................................. 41.2 1.5 5.2 3.2 3.8 9.4

 3 or More ..................................................... 7.3 0.3 1.1 0.8 0.6 24.8

Half Bathrooms

 None ........................................................... 76.6 5.1 9.5 5.9 5.0 2.7

 1 .................................................................. 27.9 1.8 2.8 1.7 1.4 8.0

 2 or More ..................................................... 2.5 0.1 0.1 0.1 Q 30.1

Number of Stories

 Single-Family Homes .................................. 73.7 3.1 8.0 5.6 4.6 4.8

 1 Story ....................................................... 44.2 0.9 5.7 4.3 4.3 6.3

 2 Stories .................................................... 26.4 1.8 2.2 1.2 0.3 12.8

 3 or More Stories ....................................... 1.6 0.4 Q Q Q 31.1

 Split-Level .................................................. 1.3 Q Q Q Q 38.1

 Other ......................................................... Q Q Q Q Q NF

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-7a. Housing Unit Characteristics by Four Most Populated States,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

Four Most Populated States

RSE

Row

Factors

New York California Texas Florida

0.4 1.0 1.0 1.3 1.7

 Apartments in Buildings With

 2 to 4 Units .................................................. 9.5 1.3 0.9 0.4 0.4 21.6

 1 Story ....................................................... 4.5 0.3 0.5 0.3 Q 27.8

 2 Stories .................................................... 3.9 0.7 0.4 Q Q 21.5

 3 or More Stories ....................................... 1.1 0.3 Q Q Q 41.7

 Split-Level .................................................. Q Q Q Q Q NF

 Other ......................................................... Q Q Q Q Q NF

 Mobile Homes ............................................. 6.8 Q Q Q 0.3 21.1

Number of Floors for Apartments in

Buildings With 5 or More Units .................. 17.0 2.6 3.2 1.3 Q 8.6

 1 or 2 Floors .............................................. 8.9 Q 2.5 1.0 Q 11.7

 3 or 4 Floors .............................................. 4.7 0.5 0.6 Q Q 20.4

 5 to 10 Floors ............................................ 2.4 1.2 Q Q Q 21.9

 11 to 20 Floors .......................................... 0.9 0.4 Q Q Q 15.6

 More than 20 Floors .................................. Q Q Q Q Q NF

Foundation/Basement of Single-Family

Homes and Apartments in Buildings With

2 to 4 Units (More than one may apply)

 Basement .................................................... 39.1 3.6 1.3 0.9 0.6 9.9

 Crawlspace .................................................. 24.2 0.5 4.6 1.5 Q 13.0

 Concrete Slab .............................................. 29.5 0.9 4.8 4.0 4.1 7.7

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ........................................... 23.8 2.7 3.4 1.7 1.3 10.5

Heated Basement in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes .............................................................. 28.3 2.5 0.4 Q Q 10.0

 All .............................................................. 22.1 1.8 0.2 Q 0.1 12.7

 Part ............................................................ 6.2 0.7 0.1 Q Q 27.8

 No ................................................................ 10.8 1.1 0.9 0.7 0.5 14.7

 No Basement ............................................... 44.0 0.8 7.6 5.1 4.4 6.0

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ........................................... 23.8 2.7 3.4 1.7 1.3 10.5

Attic in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes .............................................................. 24.6 1.4 1.5 2.4 1.2 12.9

 Finished ..................................................... 3.5 0.4 0.3 0.3 Q 32.1

 Unfinished ................................................. 21.1 1.0 1.2 2.1 1.1 13.7

 No Attic ........................................................ 58.6 3.0 7.4 3.5 3.8 5.3

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ........................................... 23.8 2.7 3.4 1.7 1.3 10.5

Heated Attic in Single-Family

Homes and Apartments in

Buildings With 2 to 4 Units

 Yes .............................................................. 4.5 0.3 0.3 0.6 0.2 25.6

 Fully Heated .............................................. 2.7 0.2 Q 0.3 0.1 21.9

 Partially Heated ......................................... 1.8 Q 0.2 0.3 Q 32.4

 Attic Not Heated .......................................... 20.1 1.1 1.2 1.8 1.0 12.5

 No Attic ........................................................ 58.6 3.0 7.4 3.5 3.8 5.3

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ........................................... 23.8 2.7 3.4 1.7 1.3 10.5

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-7a. Housing Unit Characteristics by Four Most Populated States,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

Four Most Populated States

RSE

Row

Factors

New York California Texas Florida

0.4 1.0 1.0 1.3 1.7

Garage/Carport

(single-family and mobile homes)

 Yes .............................................................. 58.4 2.4 7.2 4.7 3.7 5.2

 Attached .................................................... 37.1 1.6 5.4 2.7 3.0 8.2

 1-Car Garage .......................................... 10.8 0.9 1.2 0.8 0.6 14.7

 2-Car Garage .......................................... 24.1 0.7 3.6 1.8 2.4 9.3

 3 or more Car Garage ............................. 2.3 Q 0.6 Q Q 31.6

 Detached ................................................... 17.0 0.8 1.6 1.4 Q 12.6

 1-Car Garage .......................................... 6.9 0.3 0.5 0.3 Q 18.9

 2-Car Garage .......................................... 8.7 0.5 0.9 1.0 0.1 14.8

 3 or more Car Garage ............................. 1.4 Q Q 0.1 Q 30.9

 Carport (only) ............................................ 4.2 Q 0.3 0.6 0.4 24.5

 No ................................................................ 22.1 0.8 1.0 1.3 1.2 16.4

 Not Asked (Apartments) .............................. 26.5 3.9 4.1 1.6 1.4 10.9

Fuels Used For Any Use

(more than one often used)

 Electricity ..................................................... 107.0 7.1 12.3 7.7 6.3 NE

 Natural Gas ................................................. 66.9 5.4 10.5 4.9 1.3 4.1

 Wood ........................................................... 14.5 0.7 2.3 1.1 0.5 17.3

 Fuel Oil ........................................................ 8.7 2.2 Q Q Q 19.7

 LPG ............................................................. 9.4 0.5 0.7 0.3 0.4 24.0

 Kerosene ..................................................... 2.9 0.2 0.3 Q Q 24.6

 Solar ........................................................... 1.1 Q 0.4 Q Q 31.8

Main Heating Fuel

 Natural Gas ................................................. 59.3 4.2 9.0 4.0 1.0 7.4

 Electricity ..................................................... 31.1 0.5 2.4 3.4 5.2 9.8

 Fuel Oil ........................................................ 8.0 2.1 Q Q Q 19.7

 LPG ............................................................. 5.0 Q 0.3 0.2 Q 30.4

 Wood ........................................................... 2.0 0.2 0.3 Q Q 25.4

 Kerosene ..................................................... 0.8 (*) 0.1 Q Q 10.7

 Solar ............................................................ Q Q Q Q Q NF

 Other/None .................................................. 0.7 Q 0.1 Q Q 40.8

Natural Gas Available in Neighborhood

 Yes .............................................................. 77.7 6.0 11.0 5.8 2.0 3.8

 No ................................................................ 29.3 1.1 1.3 1.8 4.3 10.7

1 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this report, the

heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65 degrees Fahrenheit. 

A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 2 Does not include floorspace for unheated garages. 3 New construction for 2001 includes only those housing units built and occupied between January and the April-August period when the household interviews were

conducted. 4 Based on the household respondent’s description rather than the Federal Government definition.

(*) = Value rounds to zero in the units displayed.

-- = Data not applicable.

NE = RSE row factor not estimated because RSE’s for all statistics in this row are between 0.0 and 1.0 percent.

NF = No applicable RSE row factor.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2001 Residential Energy Consumption Survey.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-8a. Housing Unit Characteristics by Urban/Rural Location,

 Million U.S. Households, 2001

Housing Unit

Characteristics

RSE Column Factor:

Total

Urban/Rural Location1

RSE

Row

Factors

City Town Suburbs Rural

0.5 0.8 1.3 1.3 1.4

Total .............................................................. 107.0 49.9 18.0 21.2 17.9 4.2

Census Region and Division

 Northeast ..................................................... 20.3 7.7 4.5 4.7 3.4 7.4

 New England ............................................. 5.4 2.1 1.6 0.7 1.1 13.4

 Middle Atlantic ........................................... 14.8 5.6 2.9 4.0 2.3 8.5

 Midwest ....................................................... 24.5 11.1 4.9 4.8 3.7 10.1

 East North Central ..................................... 17.1 8.3 3.0 3.4 2.5 12.7

 West North Central .................................... 7.4 2.8 2.0 1.5 1.2 16.5

 South ........................................................... 38.9 16.7 5.1 8.9 8.2 7.7

 South Atlantic ............................................ 20.3 8.2 2.5 5.8 3.9 12.3

 East South Central .................................... 6.8 2.0 1.1 1.1 2.5 12.8

 West South Central ................................... 11.8 6.5 1.5 2.0 1.8 11.7

 West ............................................................ 23.3 14.4 3.5 2.7 2.6 7.0

 Mountain .................................................... 6.7 4.2 1.2 0.6 0.7 16.0

 Pacific ........................................................ 16.6 10.3 2.4 2.1 1.9 7.2

Metropolitan Statistical Area

 Urban ........................................................... 85.5 44.6 11.0 20.3 9.7 4.5

 Central City ................................................ 40.0 30.3 2.7 5.2 1.8 9.4

 Suburban ................................................... 45.5 14.3 8.3 15.1 7.8 6.8

 Rural ............................................................ 21.5 5.3 7.1 1.0 8.2 10.5

Climate Zone2

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ............................... 9.2 4.3 2.0 0.7 2.3 21.0

 5,500 to 7,000 HDD ................................... 28.6 11.8 6.1 6.2 4.6 11.6

 4,000 to 5,499 HDD ................................... 24.0 9.3 3.8 6.7 4.3 12.8

 Fewer than 4,000 HDD .............................. 21.0 11.3 3.7 2.9 3.1 15.4

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................................ 24.1 13.1 2.5 4.8 3.7 11.0

Total Floorspace Category3

(square feet)

 Fewer than 500 ........................................... 3.9 3.0 0.4 Q 0.3 17.3

 500 to 999 .................................................. 21.8 13.0 3.8 2.7 2.3 8.1

 1,000 to 1,499 ............................................ 22.7 10.8 3.6 4.3 4.0 7.2

 1,500 to 1,999 ............................................ 16.6 8.1 2.6 2.9 3.0 8.0

 2,000 to 2,499 ............................................ 13.5 5.3 2.5 3.1 2.6 9.1

 2,500 to 2,999 ............................................ 9.3 3.5 1.8 2.4 1.6 9.9

 3,000 to 3,499 ............................................ 6.9 2.5 1.1 1.8 1.5 13.2

 3,500 to 3,999 ............................................ 4.1 1.2 0.7 1.2 0.9 13.5

 4,000 or More ............................................. 8.2 2.4 1.3 2.7 1.7 11.2

Type and Ownership of Housing Unit

 Single-Family Detached .............................. 63.1 24.5 11.5 13.7 13.3 4.9

 Owned ....................................................... 55.7 20.9 10.0 12.9 11.8 5.2

 Rented ....................................................... 7.4 3.7 1.5 0.8 1.5 12.0

 Single-Family Attached ............................... 10.6 5.7 1.5 2.7 0.7 13.8

 Owned ....................................................... 7.5 3.8 1.0 2.2 0.5 18.0

 Rented ....................................................... 3.1 1.9 0.5 0.6 Q 15.8

 Apartments in Buildings With

 2 to 4 Units .................................................. 9.5 5.9 1.7 1.5 0.5 13.7

 Owned ....................................................... 2.1 1.2 0.2 0.6 0.1 25.9

 Rented ....................................................... 7.4 4.7 1.5 0.9 0.4 15.7

 Apartments in Buildings With

 5 or More Units ............................................ 17.0 11.9 2.3 2.5 0.3 13.1

 Owned ....................................................... 1.8 1.2 Q 0.4 Q 33.9

 Rented ....................................................... 15.2 10.8 2.1 2.1 0.3 13.7

 Mobile Homes ............................................. 6.8 1.8 1.1 0.8 3.1 15.8

 Owned ....................................................... 5.7 1.5 0.8 0.7 2.6 17.6

 Rented ....................................................... 1.1 0.3 0.3 0.1 0.5 30.2

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-8a. Housing Unit Characteristics by Urban/Rural Location,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Urban/Rural Location1

RSE

Row

Factors

City Town Suburbs Rural

0.5 0.8 1.3 1.3 1.4

Ownership of Unit

 Owned ......................................................... 72.7 28.6 12.2 16.7 15.1 4.5

 Rented ......................................................... 34.3 21.3 5.8 4.5 2.7 7.0

Year of Construction

 1939 or Before ............................................. 19.0 10.6 4.4 1.4 2.6 9.2

 1940 to 1949 ............................................... 7.6 4.5 1.1 1.1 1.0 12.1

 1950 to 1959 ............................................... 14.2 7.1 2.4 3.0 1.6 8.9

 1960 to 1969 ............................................... 13.8 6.9 2.4 2.6 1.9 9.0

 1970 to 1979 ............................................... 18.8 8.8 2.9 3.5 3.5 8.1

 1980 to 1989 ............................................... 18.2 6.7 2.9 5.1 3.5 8.2

 1990 to 1999 ............................................... 14.5 5.1 1.8 4.3 3.4 13.0

 2000 to 20014 .............................................. 0.9 0.3 0.1 0.2 0.3 30.9

Urban/Rural Location1

 City .............................................................. 49.9 49.9 -- -- -- 4.5

 Town ............................................................ 18.0 -- 18.0 -- -- 7.4

 Suburbs ....................................................... 21.2 -- -- 21.2 -- 5.7

 Rural or Open Country ................................ 17.9 -- -- -- 17.9 7.5

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ........................................................... 2.6 2.0 0.3 0.1 Q 24.7

 3 ................................................................. 9.2 6.3 1.4 1.0 0.5 13.2

 4 ................................................................. 19.0 10.1 3.6 2.8 2.5 8.4

 5 ................................................................. 22.2 10.6 3.9 3.6 4.1 7.4

 6 ................................................................. 23.0 10.2 3.4 4.8 4.6 6.9

 7 ................................................................. 14.0 5.4 2.7 2.8 3.1 8.3

 8 ................................................................. 9.8 3.2 1.7 3.3 1.7 9.8

 9 or More ..................................................... 7.2 2.2 1.0 2.8 1.2 12.4

Bedrooms

 None or 1 ..................................................... 13.6 9.4 1.9 1.5 0.8 11.5

 2 .................................................................. 29.5 15.2 5.4 4.8 4.0 6.9

 3 .................................................................. 44.1 18.6 7.1 9.1 9.3 5.7

 4 or More ..................................................... 19.8 6.7 3.6 5.9 3.7 7.6

Other Rooms

(Excluding Bathrooms)

 None or 1 ..................................................... 4.2 2.8 0.6 0.3 0.5 16.9

 2 .................................................................. 39.4 20.9 7.2 5.4 5.8 6.1

 3 .................................................................. 35.0 15.9 5.8 7.1 6.3 5.8

 4 .................................................................. 18.4 7.1 3.0 4.7 3.6 7.7

 5 or More ..................................................... 10.0 3.2 1.4 3.8 1.6 10.5

Full Bathrooms

 None or 1 ..................................................... 58.5 31.4 10.8 7.8 8.5 5.4

 2 .................................................................. 41.2 15.7 6.3 11.1 8.1 5.8

 3 or More ..................................................... 7.3 2.7 0.9 2.3 1.3 13.6

Half Bathrooms

 None ........................................................... 76.6 38.5 12.6 12.4 13.1 3.9

 1 .................................................................. 27.9 10.4 5.1 8.0 4.4 6.3

 2 or More ..................................................... 2.5 1.0 0.2 0.9 0.4 17.0

Number of Stories

 Single-Family Homes .................................. 73.7 30.2 13.0 16.5 14.0 4.4

 1 Story ....................................................... 44.2 19.1 7.7 7.8 9.5 5.6

 2 Stories .................................................... 26.4 9.8 4.7 7.6 4.3 7.4

 3 or More Stories ....................................... 1.6 0.7 0.4 0.5 0.1 24.7

 Split-Level .................................................. 1.3 0.5 0.2 0.5 Q 27.3

 Other ......................................................... Q Q Q Q Q NF

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-8a. Housing Unit Characteristics by Urban/Rural Location,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Urban/Rural Location1

RSE

Row

Factors

City Town Suburbs Rural

0.5 0.8 1.3 1.3 1.4

 Apartments in Buildings With

 2 to 4 Units .................................................. 9.5 5.9 1.7 1.5 0.5 13.7

 1 Story ....................................................... 4.5 2.6 0.9 0.7 0.3 19.2

 2 Stories .................................................... 3.9 2.5 0.7 0.6 0.1 18.4

 3 or More Stories ....................................... 1.1 0.9 Q Q Q 35.5

 Split-Level .................................................. Q Q Q Q Q NF

 Other ......................................................... Q Q Q Q Q NF

 Mobile Homes ............................................. 6.8 1.8 1.1 0.8 3.1 15.8

Number of Floors for Apartments in

Buildings With 5 or More Units .................. 17.0 11.9 2.3 2.5 0.3 13.1

 1 or 2 Floors .............................................. 8.9 5.8 1.6 1.3 0.3 17.4

 3 or 4 Floors .............................................. 4.7 3.2 0.4 1.0 Q 21.5

 5 to 10 Floors ............................................ 2.4 2.0 Q Q Q 22.7

 11 to 20 Floors .......................................... 0.9 0.9 Q Q Q 34.4

 More than 20 Floors .................................. Q Q Q Q Q NF

Foundation/Basement of Single-Family

Homes and Apartments in Buildings With

2 to 4 Units (More than one may apply)

 Basement .................................................... 39.1 15.1 7.6 9.0 7.5 6.9

 Crawlspace .................................................. 24.2 10.4 5.2 3.3 5.3 9.0

 Concrete Slab .............................................. 29.5 14.0 4.5 7.1 3.9 6.8

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ........................................... 23.8 13.7 3.4 3.3 3.4 9.4

Heated Basement in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes .............................................................. 28.3 10.3 5.3 7.2 5.6 7.9

 All .............................................................. 22.1 7.9 4.0 5.9 4.3 8.6

 Part ............................................................ 6.2 2.4 1.3 1.2 1.3 12.2

 No ................................................................ 10.8 4.8 2.3 1.8 1.8 10.6

 No Basement ............................................... 44.0 21.0 7.1 8.9 7.0 6.0

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ........................................... 23.8 13.7 3.4 3.3 3.4 9.4

Attic in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes .............................................................. 24.6 9.6 3.9 6.9 4.2 8.5

 Finished ..................................................... 3.5 1.8 0.4 0.8 0.5 18.8

 Unfinished ................................................. 21.1 7.8 3.5 6.1 3.7 9.0

 No Attic ........................................................ 58.6 26.5 10.8 11.1 10.3 5.3

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ........................................... 23.8 13.7 3.4 3.3 3.4 9.4

Heated Attic in Single-Family

Homes and Apartments in

Buildings With 2 to 4 Units

 Yes .............................................................. 4.5 2.3 0.3 1.2 0.7 15.8

 Fully Heated .............................................. 2.7 1.4 0.2 0.6 0.4 20.5

 Partially Heated ......................................... 1.8 0.9 0.2 0.6 0.3 21.6

 Attic Not Heated .......................................... 20.1 7.4 3.6 5.7 3.5 9.2

 No Attic ........................................................ 58.6 26.5 10.8 11.1 10.3 5.3

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ........................................... 23.8 13.7 3.4 3.3 3.4 9.4

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-8a. Housing Unit Characteristics by Urban/Rural Location,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Urban/Rural Location1

RSE

Row

Factors

City Town Suburbs Rural

0.5 0.8 1.3 1.3 1.4

Garage/Carport

(single-family and mobile homes)

 Yes .............................................................. 58.4 22.8 10.4 14.4 10.8 5.0

 Attached .................................................... 37.1 13.4 6.2 11.3 6.3 6.5

 1-Car Garage .......................................... 10.8 4.1 2.3 2.8 1.6 12.6

 2-Car Garage .......................................... 24.1 8.4 3.7 7.6 4.3 7.6

 3 or more Car Garage ............................. 2.3 0.8 Q 0.9 0.4 22.3

 Detached ................................................... 17.0 7.4 3.4 2.5 3.8 9.5

 1-Car Garage .......................................... 6.9 3.4 1.5 0.8 1.2 12.8

 2-Car Garage .......................................... 8.7 3.7 1.7 1.4 1.9 12.4

 3 or more Car Garage ............................. 1.4 0.3 0.2 0.2 0.7 27.0

 Carport (only) ............................................ 4.2 2.1 0.7 0.7 0.8 18.4

 No ................................................................ 22.1 9.2 3.7 2.9 6.3 9.7

 Not Asked (Apartments) .............................. 26.5 17.8 3.9 3.9 0.8 9.6

Fuels Used For Any Use

(more than one often used)

 Electricity ..................................................... 107.0 49.9 18.0 21.2 17.9 4.2

 Natural Gas ................................................. 66.9 37.4 11.2 14.4 3.9 5.5

 Wood ........................................................... 14.5 3.9 2.4 3.2 5.1 9.4

 Fuel Oil ........................................................ 8.7 2.6 2.1 1.4 2.6 13.3

 LPG ............................................................. 9.4 0.9 1.6 0.8 6.1 14.9

 Kerosene ..................................................... 2.9 0.5 0.6 0.4 1.4 20.1

 Solar ........................................................... 1.1 0.3 0.2 0.3 0.3 29.0

Main Heating Fuel

 Natural Gas ................................................. 59.3 32.5 10.0 13.1 3.6 6.0

 Electricity ..................................................... 31.1 13.8 4.6 6.3 6.5 7.2

 Fuel Oil ........................................................ 8.0 2.4 2.0 1.3 2.3 13.5

 LPG ............................................................. 5.0 0.3 0.9 0.2 3.5 20.8

 Wood ........................................................... 2.0 0.2 0.3 0.2 1.3 22.3

 Kerosene ..................................................... 0.8 Q Q Q 0.5 21.6

 Solar ............................................................ Q Q Q Q Q NF

 Other/None .................................................. 0.7 0.5 0.1 Q 0.1 30.8

Natural Gas Available in Neighborhood

 Yes .............................................................. 77.7 42.2 13.4 16.3 5.8 4.9

 No ................................................................ 29.3 7.7 4.6 5.0 12.0 8.7

1 Based on the household respondent’s description rather than the Federal Government definition. 2 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this report, the

heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65 degrees Fahrenheit. 

A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 3 Does not include floorspace for unheated garages. 4 New construction for 2001 includes only those housing units built and occupied between January and the April-August period when the household interviews were

conducted.

-- = Data not applicable.

NF = No applicable RSE row factor.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2001 Residential Energy Consumption Survey.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-9a. Housing Unit Characteristics by Northeast Census Region,

 Million U.S. Households, 2001

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

Northeast Census Region

RSE

Row

Factors

Total

Census Division

Middle Atlantic New England

0.5 1.0 1.2 1.6

Total .............................................................. 107.0 20.3 14.8 5.4 NE

Census Region and Division

 Northeast ..................................................... 20.3 20.3 14.8 5.4 NF

 New England ............................................. 5.4 5.4 Q 5.4 NF

 Middle Atlantic ........................................... 14.8 14.8 14.8 Q NF

 Midwest ....................................................... 24.5 -- -- -- NF

 East North Central ..................................... 17.1 -- -- -- NF

 West North Central .................................... 7.4 -- -- -- NF

 South ........................................................... 38.9 -- -- -- NF

 South Atlantic ............................................ 20.3 -- -- -- NF

 East South Central .................................... 6.8 -- -- -- NF

 West South Central ................................... 11.8 -- -- -- NF

 West ............................................................ 23.3 -- -- -- NF

 Mountain .................................................... 6.7 -- -- -- NF

 Pacific ........................................................ 16.6 -- -- -- NF

Metropolitan Statistical Area

 Urban ........................................................... 85.5 18.7 14.3 4.4 1.5

 Central City ................................................ 40.0 6.5 4.9 1.6 9.2

 Suburban ................................................... 45.5 12.2 9.4 2.8 4.9

 Rural ............................................................ 21.5 1.6 0.6 1.0 10.7

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ............................... 9.2 1.9 0.5 1.4 23.4

 5,500 to 7,000 HDD ................................... 28.6 10.0 6.0 4.0 7.7

 4,000 to 5,499 HDD ................................... 24.0 8.4 8.4 Q 5.1

 Fewer than 4,000 HDD .............................. 21.0 -- -- -- 17.5

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................................ 24.1 -- -- -- 12.7

Total Floorspace Category2

(square feet)

 Fewer than 500 ........................................... 3.9 1.0 0.9 Q 15.9

 500 to 999 .................................................. 21.8 3.5 2.6 0.9 9.1

 1,000 to 1,499 ............................................ 22.7 3.3 2.6 0.7 7.9

 1,500 to 1,999 ............................................ 16.6 3.1 2.3 0.8 6.6

 2,000 to 2,499 ............................................ 13.5 2.7 2.0 0.7 9.8

 2,500 to 2,999 ............................................ 9.3 2.1 1.6 0.5 9.7

 3,000 to 3,499 ............................................ 6.9 1.6 1.0 0.6 15.3

 3,500 to 3,999 ............................................ 4.1 1.0 0.6 0.3 14.9

 4,000 or More ............................................. 8.2 2.1 1.3 0.8 13.6

Type and Ownership of Housing Unit

 Single-Family Detached .............................. 63.1 9.2 6.1 3.1 6.0

 Owned ....................................................... 55.7 8.6 5.8 2.8 6.6

 Rented ....................................................... 7.4 0.6 0.3 0.3 17.0

 Single-Family Attached ............................... 10.6 2.8 2.4 0.4 13.1

 Owned ....................................................... 7.5 2.2 2.0 0.2 19.0

 Rented ....................................................... 3.1 0.6 0.4 0.2 17.3

 Apartments in Buildings With

 2 to 4 Units .................................................. 9.5 3.1 2.0 1.1 12.3

 Owned ....................................................... 2.1 1.1 0.9 0.2 19.1

 Rented ....................................................... 7.4 2.0 1.1 0.9 13.3

 Apartments in Buildings With

 5 or More Units ............................................ 17.0 4.5 3.8 0.6 10.0

 Owned ....................................................... 1.8 0.5 0.4 Q 25.1

 Rented ....................................................... 15.2 4.0 3.4 0.6 10.1

 Mobile Homes ............................................. 6.8 0.7 0.5 0.2 22.7

 Owned ....................................................... 5.7 0.6 0.4 0.1 25.7

 Rented ....................................................... 1.1 Q Q Q 35.4

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-9a. Housing Unit Characteristics by Northeast Census Region,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

Northeast Census Region

RSE

Row

Factors

Total

Census Division

Middle Atlantic New England

0.5 1.0 1.2 1.6

Ownership of Unit

 Owned ......................................................... 72.7 13.0 9.5 3.5 3.6

 Rented ......................................................... 34.3 7.3 5.4 1.9 6.8

Year of Construction

 1939 or Before ............................................. 19.0 6.5 4.6 1.9 7.8

 1940 to 1949 ............................................... 7.6 2.0 1.6 0.4 15.6

 1950 to 1959 ............................................... 14.2 3.0 2.2 0.9 8.6

 1960 to 1969 ............................................... 13.8 2.8 2.0 0.8 6.5

 1970 to 1979 ............................................... 18.8 2.1 1.7 0.4 11.9

 1980 to 1989 ............................................... 18.2 2.4 1.7 0.7 10.5

 1990 to 1999 ............................................... 14.5 1.4 1.1 0.3 15.5

 2000 to 20013 .............................................. 0.9 Q Q Q 33.8

Urban/Rural Location4

 City .............................................................. 49.9 7.7 5.6 2.1 5.9

 Town ............................................................ 18.0 4.5 2.9 1.6 9.8

 Suburbs ....................................................... 21.2 4.7 4.0 0.7 8.5

 Rural or Open Country ................................ 17.9 3.4 2.3 1.1 13.3

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ........................................................... 2.6 0.6 0.4 0.2 24.3

 3 ................................................................. 9.2 2.1 1.7 0.4 9.8

 4 ................................................................. 19.0 3.9 2.9 1.0 9.6

 5 ................................................................. 22.2 3.7 2.8 1.0 6.8

 6 ................................................................. 23.0 3.7 2.7 1.0 6.7

 7 ................................................................. 14.0 2.7 1.9 0.8 10.5

 8 ................................................................. 9.8 1.8 1.3 0.5 12.0

 9 or More ..................................................... 7.2 1.6 1.2 0.4 11.9

Bedrooms

 None or 1 ..................................................... 13.6 3.3 2.6 0.8 9.3

 2 .................................................................. 29.5 5.9 4.3 1.6 8.5

 3 .................................................................. 44.1 7.1 5.3 1.8 6.0

 4 or More ..................................................... 19.8 3.9 2.7 1.2 9.9

Other Rooms

(Excluding Bathrooms)

 None or 1 ..................................................... 4.2 0.9 0.7 0.2 16.7

 2 .................................................................. 39.4 7.1 5.3 1.8 6.1

 3 .................................................................. 35.0 6.5 4.7 1.8 5.4

 4 .................................................................. 18.4 3.7 2.6 1.1 9.3

 5 or More ..................................................... 10.0 2.1 1.5 0.5 12.1

Full Bathrooms

 None or 1 ..................................................... 58.5 14.1 10.1 3.9 3.9

 2 .................................................................. 41.2 5.3 4.1 1.2 8.2

 3 or More ..................................................... 7.3 0.8 0.6 0.2 20.9

Half Bathrooms

 None ........................................................... 76.6 13.8 9.9 3.9 2.6

 1 .................................................................. 27.9 6.2 4.8 1.4 6.1

 2 or More ..................................................... 2.5 0.3 0.2 Q 21.0

Number of Stories

 Single-Family Homes .................................. 73.7 12.0 8.5 3.5 4.0

 1 Story ....................................................... 44.2 3.6 2.4 1.2 6.8

 2 Stories .................................................... 26.4 7.5 5.4 2.1 4.8

 3 or More Stories ....................................... 1.6 0.7 0.5 0.2 20.7

 Split-Level .................................................. 1.3 0.2 Q Q 35.6

 Other ......................................................... Q Q Q Q NF

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-9a. Housing Unit Characteristics by Northeast Census Region,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

Northeast Census Region

RSE

Row

Factors

Total

Census Division

Middle Atlantic New England

0.5 1.0 1.2 1.6

 Apartments in Buildings With

 2 to 4 Units .................................................. 9.5 3.1 2.0 1.1 12.3

 1 Story ....................................................... 4.5 0.7 0.5 0.2 19.8

 2 Stories .................................................... 3.9 1.5 1.1 0.5 14.0

 3 or More Stories ....................................... 1.1 0.9 0.5 0.4 26.2

 Split-Level .................................................. Q Q Q Q NF

 Other ......................................................... Q Q Q Q NF

 Mobile Homes ............................................. 6.8 0.7 0.5 0.2 22.7

Number of Floors for Apartments in

Buildings With 5 or More Units .................. 17.0 4.5 3.8 0.6 10.0

 1 or 2 Floors .............................................. 8.9 1.1 1.1 Q 26.0

 3 or 4 Floors .............................................. 4.7 1.0 0.7 Q 23.5

 5 to 10 Floors ............................................ 2.4 1.6 1.4 Q 17.8

 11 to 20 Floors .......................................... 0.9 0.7 0.6 Q 25.7

 More than 20 Floors .................................. Q Q Q Q NF

Foundation/Basement of Single-Family

Homes and Apartments in Buildings With

2 to 4 Units (More than one may apply)

 Basement .................................................... 39.1 12.5 8.4 4.1 4.5

 Crawlspace .................................................. 24.2 1.7 1.1 0.6 13.6

 Concrete Slab .............................................. 29.5 2.8 2.3 0.6 14.2

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ........................................... 23.8 5.1 4.3 0.8 7.5

Heated Basement in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes .............................................................. 28.3 9.1 6.5 2.6 7.2

 All .............................................................. 22.1 6.9 4.9 2.0 7.8

 Part ............................................................ 6.2 2.1 1.6 0.6 11.9

 No ................................................................ 10.8 3.4 1.9 1.5 10.1

 No Basement ............................................... 44.0 2.7 2.1 0.5 11.8

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ........................................... 23.8 5.1 4.3 0.8 7.5

Attic in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes .............................................................. 24.6 5.9 4.0 1.9 5.9

 Finished ..................................................... 3.5 1.1 0.9 0.3 20.6

 Unfinished ................................................. 21.1 4.8 3.2 1.6 6.6

 No Attic ........................................................ 58.6 9.2 6.5 2.7 4.9

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ........................................... 23.8 5.1 4.3 0.8 7.5

Heated Attic in Single-Family

Homes and Apartments in

Buildings With 2 to 4 Units

 Yes .............................................................. 4.5 1.2 0.8 0.4 19.0

 Fully Heated .............................................. 2.7 0.7 0.5 0.2 23.4

 Partially Heated ......................................... 1.8 0.4 0.3 0.1 28.3

 Attic Not Heated .......................................... 20.1 4.8 3.2 1.5 6.7

 No Attic ........................................................ 58.6 9.2 6.5 2.7 4.9

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ........................................... 23.8 5.1 4.3 0.8 7.5

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-9a. Housing Unit Characteristics by Northeast Census Region,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

Northeast Census Region

RSE

Row

Factors

Total

Census Division

Middle Atlantic New England

0.5 1.0 1.2 1.6

Garage/Carport

(single-family and mobile homes)

 Yes .............................................................. 58.4 9.0 6.7 2.3 4.3

 Attached .................................................... 37.1 5.8 4.5 1.3 5.6

 1-Car Garage .......................................... 10.8 2.9 2.4 0.6 12.4

 2-Car Garage .......................................... 24.1 2.8 2.0 0.8 11.2

 3 or more Car Garage ............................. 2.3 Q Q Q 28.2

 Detached ................................................... 17.0 3.0 2.1 1.0 7.5

 1-Car Garage .......................................... 6.9 1.3 0.9 0.4 13.0

 2-Car Garage .......................................... 8.7 1.6 1.1 0.5 9.1

 3 or more Car Garage ............................. 1.4 Q Q Q 27.9

 Carport (only) ............................................ 4.2 0.2 Q Q 25.4

 No ................................................................ 22.1 3.6 2.3 1.3 11.3

 Not Asked (Apartments) .............................. 26.5 7.6 5.8 1.8 8.5

Fuels Used For Any Use

(more than one often used)

 Electricity ..................................................... 107.0 20.3 14.8 5.4 NE

 Natural Gas ................................................. 66.9 12.5 10.3 2.3 7.5

 Wood ........................................................... 14.5 2.3 1.3 0.9 13.1

 Fuel Oil ........................................................ 8.7 6.6 3.9 2.7 12.4

 LPG ............................................................. 9.4 1.7 1.0 0.7 16.7

 Kerosene ..................................................... 2.9 0.7 0.4 Q 23.9

 Solar ........................................................... 1.1 0.2 Q 0.2 32.2

Main Heating Fuel

 Natural Gas ................................................. 59.3 10.6 8.7 1.9 8.6

 Electricity ..................................................... 31.1 2.3 1.8 0.5 11.1

 Fuel Oil ........................................................ 8.0 6.3 3.6 2.7 12.2

 LPG ............................................................. 5.0 0.4 0.2 0.1 25.3

 Wood ........................................................... 2.0 0.3 0.2 Q 18.7

 Kerosene ..................................................... 0.8 0.3 0.2 Q 33.1

 Solar ............................................................ Q Q Q Q NF

 Other/None .................................................. 0.7 Q Q Q 35.7

Natural Gas Available in Neighborhood

 Yes .............................................................. 77.7 14.5 11.6 2.9 5.1

 No ................................................................ 29.3 5.8 3.3 2.5 11.6

1 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this report,

the heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65 degrees

Fahrenheit. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 2 Does not include floorspace for unheated garages. 3 New construction for 2001 includes only those housing units built and occupied between January and the April-August period when the household interviews

were conducted. 4 Based on the household respondent’s description rather than the Federal Government definition.

-- = Data not applicable.

NE = RSE row factor not estimated because RSE’s for all statistics in this row are between 0.0 and 1.0 percent.

NF = No applicable RSE row factor.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2001 Residential Energy Consumption Survey.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-10a. Housing Unit Characteristics by Midwest Census Region,

 Million U.S. Households, 2001

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

Midwest Census Region

RSE

Row

Factors

Total

Census Division

East North Central West North Central

0.5 1.0 1.2 1.8

Total .............................................................. 107.0 24.5 17.1 7.4 NE

Census Region and Division

 Northeast ..................................................... 20.3 -- -- -- NF

 New England ............................................. 5.4 -- -- -- NF

 Middle Atlantic ........................................... 14.8 -- -- -- NF

 Midwest ....................................................... 24.5 24.5 17.1 7.4 NF

 East North Central ..................................... 17.1 17.1 17.1 Q NF

 West North Central .................................... 7.4 7.4 Q 7.4 NF

 South ........................................................... 38.9 -- -- -- NF

 South Atlantic ............................................ 20.3 -- -- -- NF

 East South Central .................................... 6.8 -- -- -- NF

 West South Central ................................... 11.8 -- -- -- NF

 West ............................................................ 23.3 -- -- -- NF

 Mountain .................................................... 6.7 -- -- -- NF

 Pacific ........................................................ 16.6 -- -- -- NF

Metropolitan Statistical Area

 Urban ........................................................... 85.5 18.0 13.3 4.7 1.8

 Central City ................................................ 40.0 8.6 6.4 2.2 8.2

 Suburban ................................................... 45.5 9.4 6.9 2.5 7.8

 Rural ............................................................ 21.5 6.5 3.8 2.7 5.3

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ............................... 9.2 5.4 2.8 2.7 28.6

 5,500 to 7,000 HDD ................................... 28.6 14.8 12.5 Q 13.9

 4,000 to 5,499 HDD ................................... 24.0 4.3 Q 2.4 22.6

 Fewer than 4,000 HDD .............................. 21.0 -- -- -- 19.1

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................................ 24.1 -- -- -- 13.9

Total Floorspace Category2

(square feet)

 Fewer than 500 ........................................... 3.9 0.5 0.4 Q 24.8

 500 to 999 .................................................. 21.8 4.1 3.0 1.1 9.1

 1,000 to 1,499 ............................................ 22.7 3.9 2.5 1.4 9.0

 1,500 to 1,999 ............................................ 16.6 3.4 2.5 0.9 8.1

 2,000 to 2,499 ............................................ 13.5 3.7 2.4 1.4 8.3

 2,500 to 2,999 ............................................ 9.3 3.1 2.3 0.7 8.8

 3,000 to 3,499 ............................................ 6.9 2.2 1.6 0.7 12.3

 3,500 to 3,999 ............................................ 4.1 1.3 1.0 0.3 15.1

 4,000 or More ............................................. 8.2 2.3 1.5 0.8 9.7

Type and Ownership of Housing Unit

 Single-Family Detached .............................. 63.1 15.4 10.4 5.0 3.5

 Owned ....................................................... 55.7 13.8 9.2 4.5 4.3

 Rented ....................................................... 7.4 1.7 1.2 0.5 12.9

 Single-Family Attached ............................... 10.6 2.8 2.0 0.8 17.6

 Owned ....................................................... 7.5 2.2 1.6 0.6 24.5

 Rented ....................................................... 3.1 0.6 0.4 Q 21.6

 Apartments in Buildings With

 2 to 4 Units .................................................. 9.5 2.2 1.8 0.4 14.7

 Owned ....................................................... 2.1 0.3 0.2 Q 28.9

 Rented ....................................................... 7.4 1.9 1.6 0.3 16.3

 Apartments in Buildings With

 5 or More Units ............................................ 17.0 2.8 2.0 0.8 19.0

 Owned ....................................................... 1.8 Q Q Q 50.7

 Rented ....................................................... 15.2 2.6 1.9 0.7 18.4

 Mobile Homes ............................................. 6.8 1.2 0.8 0.4 17.9

 Owned ....................................................... 5.7 1.0 0.7 0.3 18.4

 Rented ....................................................... 1.1 0.2 Q Q 33.1

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-10a. Housing Unit Characteristics by Midwest Census Region,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

Midwest Census Region

RSE

Row

Factors

Total

Census Division

East North Central West North Central

0.5 1.0 1.2 1.8

Ownership of Unit

 Owned ......................................................... 72.7 17.5 11.8 5.6 3.3

 Rented ......................................................... 34.3 7.0 5.3 1.8 8.3

Year of Construction

 1939 or Before ............................................. 19.0 6.5 4.5 2.0 10.1

 1940 to 1949 ............................................... 7.6 1.6 1.1 0.5 17.2

 1950 to 1959 ............................................... 14.2 3.5 2.6 0.9 8.8

 1960 to 1969 ............................................... 13.8 2.9 2.0 0.9 10.6

 1970 to 1979 ............................................... 18.8 3.6 2.5 1.1 12.0

 1980 to 1989 ............................................... 18.2 3.7 2.5 1.2 12.2

 1990 to 1999 ............................................... 14.5 2.5 1.7 0.8 17.8

 2000 to 20013 .............................................. 0.9 0.3 Q Q 29.7

Urban/Rural Location4

 City .............................................................. 49.9 11.1 8.3 2.8 7.8

 Town ............................................................ 18.0 4.9 3.0 2.0 13.6

 Suburbs ....................................................... 21.2 4.8 3.4 1.5 9.5

 Rural or Open Country ................................ 17.9 3.7 2.5 1.2 16.1

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ........................................................... 2.6 0.6 0.5 Q 30.8

 3 ................................................................. 9.2 1.7 1.4 0.2 16.5

 4 ................................................................. 19.0 3.8 2.2 1.5 7.3

 5 ................................................................. 22.2 4.8 3.5 1.3 9.1

 6 ................................................................. 23.0 5.5 4.0 1.5 6.1

 7 ................................................................. 14.0 3.7 2.7 1.0 8.8

 8 ................................................................. 9.8 2.7 1.7 1.1 11.6

 9 or More ..................................................... 7.2 1.8 1.2 0.6 16.8

Bedrooms

 None or 1 ..................................................... 13.6 2.9 2.2 0.7 12.3

 2 .................................................................. 29.5 6.1 3.9 2.2 6.7

 3 .................................................................. 44.1 10.3 7.4 2.8 5.2

 4 or More ..................................................... 19.8 5.2 3.6 1.6 8.6

Other Rooms

(Excluding Bathrooms)

 None or 1 ..................................................... 4.2 0.7 0.6 Q 18.0

 2 .................................................................. 39.4 7.7 5.6 2.2 4.9

 3 .................................................................. 35.0 8.6 6.2 2.4 4.7

 4 .................................................................. 18.4 4.7 3.2 1.6 9.9

 5 or More ..................................................... 10.0 2.6 1.6 1.1 14.0

Full Bathrooms

 None or 1 ..................................................... 58.5 15.1 10.7 4.4 5.1

 2 .................................................................. 41.2 8.3 5.8 2.6 7.3

 3 or More ..................................................... 7.3 1.1 0.6 0.5 17.3

Half Bathrooms

 None ........................................................... 76.6 16.0 11.0 5.0 2.8

 1 .................................................................. 27.9 7.8 5.5 2.3 5.6

 2 or More ..................................................... 2.5 0.7 0.6 Q 19.0

Number of Stories

 Single-Family Homes .................................. 73.7 18.3 12.4 5.8 2.8

 1 Story ....................................................... 44.2 9.1 5.8 3.3 4.9

 2 Stories .................................................... 26.4 8.2 5.9 2.3 7.4

 3 or More Stories ....................................... 1.6 0.4 0.3 Q 25.6

 Split-Level .................................................. 1.3 0.5 0.4 Q 27.0

 Other ......................................................... Q Q Q Q NF

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-10a. Housing Unit Characteristics by Midwest Census Region,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

Midwest Census Region

RSE

Row

Factors

Total

Census Division

East North Central West North Central

0.5 1.0 1.2 1.8

 Apartments in Buildings With

 2 to 4 Units .................................................. 9.5 2.2 1.8 0.4 14.7

 1 Story ....................................................... 4.5 1.0 0.8 Q 20.3

 2 Stories .................................................... 3.9 1.1 0.9 Q 13.5

 3 or More Stories ....................................... 1.1 Q Q Q 44.5

 Split-Level .................................................. Q Q Q Q NF

 Other ......................................................... Q Q Q Q NF

 Mobile Homes ............................................. 6.8 1.2 0.8 0.4 17.9

Number of Floors for Apartments in

Buildings With 5 or More Units .................. 17.0 2.8 2.0 0.8 19.0

 1 or 2 Floors .............................................. 8.9 1.4 0.8 Q 21.3

 3 or 4 Floors .............................................. 4.7 1.0 0.8 0.3 24.1

 5 to 10 Floors ............................................ 2.4 Q Q Q 31.1

 11 to 20 Floors .......................................... 0.9 Q Q Q 46.5

 More than 20 Floors .................................. Q Q Q Q NF

Foundation/Basement of Single-Family

Homes and Apartments in Buildings With

2 to 4 Units (More than one may apply)

 Basement .................................................... 39.1 14.9 10.2 4.7 5.8

 Crawlspace .................................................. 24.2 4.6 3.4 1.2 11.7

 Concrete Slab .............................................. 29.5 3.5 2.8 0.8 11.9

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ........................................... 23.8 4.0 2.9 1.2 12.8

Heated Basement in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes .............................................................. 28.3 12.2 8.2 4.1 6.3

 All .............................................................. 22.1 10.1 6.6 3.4 5.8

 Part ............................................................ 6.2 2.2 1.5 0.7 14.9

 No ................................................................ 10.8 2.7 2.1 0.6 9.4

 No Basement ............................................... 44.0 5.5 4.0 1.5 11.6

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ........................................... 23.8 4.0 2.9 1.2 12.8

Attic in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes .............................................................. 24.6 5.1 3.5 1.7 10.5

 Finished ..................................................... 3.5 0.8 0.5 0.3 15.8

 Unfinished ................................................. 21.1 4.3 2.9 1.4 11.4

 No Attic ........................................................ 58.6 15.3 10.8 4.6 4.6

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ........................................... 23.8 4.0 2.9 1.2 12.8

Heated Attic in Single-Family

Homes and Apartments in

Buildings With 2 to 4 Units

 Yes .............................................................. 4.5 0.9 0.6 0.3 17.7

 Fully Heated .............................................. 2.7 0.6 0.4 Q 23.0

 Partially Heated ......................................... 1.8 0.3 Q Q 27.1

 Attic Not Heated .......................................... 20.1 4.2 2.9 1.4 11.6

 No Attic ........................................................ 58.6 15.3 10.8 4.6 4.6

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ........................................... 23.8 4.0 2.9 1.2 12.8

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-10a. Housing Unit Characteristics by Midwest Census Region,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

Midwest Census Region

RSE

Row

Factors

Total

Census Division

East North Central West North Central

0.5 1.0 1.2 1.8

Garage/Carport

(single-family and mobile homes)

 Yes .............................................................. 58.4 15.9 10.7 5.2 3.8

 Attached .................................................... 37.1 9.8 6.8 3.1 7.3

 1-Car Garage .......................................... 10.8 2.3 1.4 1.0 14.7

 2-Car Garage .......................................... 24.1 6.4 4.6 1.8 8.4

 3 or more Car Garage ............................. 2.3 1.1 0.8 0.3 27.2

 Detached ................................................... 17.0 5.8 3.7 2.1 10.7

 1-Car Garage .......................................... 6.9 2.2 1.4 0.8 14.2

 2-Car Garage .......................................... 8.7 3.1 2.1 1.1 12.0

 3 or more Car Garage ............................. 1.4 0.5 0.3 Q 27.9

 Carport (only) ............................................ 4.2 Q Q Q 22.7

 No ................................................................ 22.1 3.6 2.6 1.0 12.2

 Not Asked (Apartments) .............................. 26.5 5.0 3.8 1.2 10.4

Fuels Used For Any Use

(more than one often used)

 Electricity ..................................................... 107.0 24.5 17.1 7.4 NE

 Natural Gas ................................................. 66.9 19.4 14.2 5.2 3.9

 Wood ........................................................... 14.5 2.5 1.4 1.1 13.1

 Fuel Oil ........................................................ 8.7 0.9 0.5 0.4 15.2

 LPG ............................................................. 9.4 2.3 1.1 1.2 22.0

 Kerosene ..................................................... 2.9 0.5 0.4 Q 15.3

 Solar ........................................................... 1.1 Q Q Q 34.7

Main Heating Fuel

 Natural Gas ................................................. 59.3 19.0 13.9 5.1 4.4

 Electricity ..................................................... 31.1 2.5 1.7 0.8 13.5

 Fuel Oil ........................................................ 8.0 0.8 0.4 0.4 14.0

 LPG ............................................................. 5.0 1.8 0.9 0.9 23.7

 Wood ........................................................... 2.0 0.4 Q 0.2 29.9

 Kerosene ..................................................... 0.8 Q Q Q 36.1

 Solar ............................................................ Q Q Q Q NF

 Other/None .................................................. 0.7 Q Q Q 39.0

Natural Gas Available in Neighborhood

 Yes .............................................................. 77.7 21.5 15.5 6.0 3.3

 No ................................................................ 29.3 3.0 1.6 1.4 17.8

1 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this report,

the heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65 degrees

Fahrenheit. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 2 Does not include floorspace for unheated garages. 3 New construction for 2001 includes only those housing units built and occupied between January and the April-August period when the household interviews

were conducted. 4 Based on the household respondent’s description rather than the Federal Government definition.

-- = Data not applicable.

NE = RSE row factor not estimated because RSE’s for all statistics in this row are between 0.0 and 1.0 percent.

NF = No applicable RSE row factor.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2001 Residential Energy Consumption Survey.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-11a. Housing Unit Characteristics by South Census Region,

 Million U.S. Households, 2001

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

South Census Region

RSE

Row

Factors

Total

Census Division

South Atlantic East South Central West South Central

0.5 0.9 1.2 1.4 1.4

Total .............................................................. 107.0 38.9 20.3 6.8 11.8 NE

Census Region and Division

 Northeast ..................................................... 20.3 -- -- -- -- NF

 New England ............................................. 5.4 -- -- -- -- NF

 Middle Atlantic ........................................... 14.8 -- -- -- -- NF

 Midwest ....................................................... 24.5 -- -- -- -- NF

 East North Central ..................................... 17.1 -- -- -- -- NF

 West North Central .................................... 7.4 -- -- -- -- NF

 South ........................................................... 38.9 38.9 20.3 6.8 11.8 NF

 South Atlantic ............................................ 20.3 20.3 20.3 Q Q NF

 East South Central .................................... 6.8 6.8 Q 6.8 Q NF

 West South Central ................................... 11.8 11.8 Q Q 11.8 NF

 West ............................................................ 23.3 -- -- -- -- NF

 Mountain .................................................... 6.7 -- -- -- -- NF

 Pacific ........................................................ 16.6 -- -- -- -- NF

Metropolitan Statistical Area

 Urban ........................................................... 85.5 28.1 15.5 3.5 9.0 2.3

 Central City ................................................ 40.0 13.1 6.4 1.6 5.1 11.6

 Suburban ................................................... 45.5 14.9 9.1 1.9 3.9 9.7

 Rural ............................................................ 21.5 10.9 4.8 3.3 2.8 5.7

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ............................... 9.2 -- -- -- -- 36.5

 5,500 to 7,000 HDD ................................... 28.6 -- -- -- -- 18.3

 4,000 to 5,499 HDD ................................... 24.0 8.9 6.3 2.6 Q 12.5

 Fewer than 4,000 HDD .............................. 21.0 9.9 5.7 Q Q 12.5

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................................ 24.1 20.1 8.3 Q 10.3 6.3

Total Floorspace Category2

(square feet)

 Fewer than 500 ........................................... 3.9 1.3 0.6 Q 0.5 19.3

 500 to 999 .................................................. 21.8 7.6 3.8 1.5 2.4 8.7

 1,000 to 1,499 ............................................ 22.7 10.0 4.9 1.7 3.4 6.8

 1,500 to 1,999 ............................................ 16.6 6.8 3.6 1.1 2.2 9.2

 2,000 to 2,499 ............................................ 13.5 4.6 2.9 0.6 1.1 10.0

 2,500 to 2,999 ............................................ 9.3 2.6 1.4 0.6 0.6 13.7

 3,000 to 3,499 ............................................ 6.9 2.0 1.2 0.4 0.3 19.8

 3,500 to 3,999 ............................................ 4.1 1.2 0.5 0.2 0.5 16.6

 4,000 or More ............................................. 8.2 2.8 1.4 0.6 0.8 15.9

Type and Ownership of Housing Unit

 Single-Family Detached .............................. 63.1 25.5 12.4 4.8 8.3 3.3

 Owned ....................................................... 55.7 22.4 11.0 4.2 7.2 3.7

 Rented ....................................................... 7.4 3.1 1.4 0.6 1.1 12.5

 Single-Family Attached ............................... 10.6 3.1 2.4 0.3 0.4 19.9

 Owned ....................................................... 7.5 2.1 1.7 Q Q 22.2

 Rented ....................................................... 3.1 1.0 0.7 Q 0.3 19.9

 Apartments in Buildings With

 2 to 4 Units .................................................. 9.5 2.6 1.4 Q 0.7 17.3

 Owned ....................................................... 2.1 0.5 Q Q Q 40.6

 Rented ....................................................... 7.4 2.1 1.1 Q 0.6 19.7

 Apartments in Buildings With

 5 or More Units ............................................ 17.0 4.5 2.6 0.4 1.5 14.0

 Owned ....................................................... 1.8 Q Q Q Q 52.2

 Rented ....................................................... 15.2 3.9 2.1 0.4 1.5 11.4

 Mobile Homes ............................................. 6.8 3.3 1.5 0.9 0.9 20.2

 Owned ....................................................... 5.7 2.6 1.2 0.7 0.7 21.2

 Rented ....................................................... 1.1 0.6 Q Q Q 36.3

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-11a. Housing Unit Characteristics by South Census Region,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

South Census Region

RSE

Row

Factors

Total

Census Division

South Atlantic East South Central West South Central

0.5 0.9 1.2 1.4 1.4

Ownership of Unit

 Owned ......................................................... 72.7 28.1 14.8 5.1 8.2 2.6

 Rented ......................................................... 34.3 10.8 5.5 1.7 3.6 6.6

Year of Construction

 1939 or Before ............................................. 19.0 3.6 1.1 1.0 1.5 12.9

 1940 to 1949 ............................................... 7.6 2.4 1.3 0.4 0.8 14.3

 1950 to 1959 ............................................... 14.2 4.4 2.4 0.7 1.3 9.9

 1960 to 1969 ............................................... 13.8 4.4 2.2 0.8 1.4 12.0

 1970 to 1979 ............................................... 18.8 7.7 4.3 1.0 2.4 6.9

 1980 to 1989 ............................................... 18.2 8.9 4.9 1.5 2.5 7.7

 1990 to 1999 ............................................... 14.5 7.3 4.0 1.4 1.9 13.8

 1990 to 20013 .............................................. 0.9 0.3 Q Q Q 39.5

Urban/Rural Location4

 City .............................................................. 49.9 16.7 8.2 2.0 6.5 7.4

 Town ............................................................ 18.0 5.1 2.5 1.1 1.5 12.8

 Suburbs ....................................................... 21.2 8.9 5.8 1.1 2.0 10.1

 Rural or Open Country ................................ 17.9 8.2 3.9 2.5 1.8 12.6

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ........................................................... 2.6 0.6 Q Q Q 35.4

 3 ................................................................. 9.2 2.5 1.1 0.4 1.1 14.7

 4 ................................................................. 19.0 5.9 3.0 1.2 1.7 8.5

 5 ................................................................. 22.2 9.7 4.7 1.7 3.3 7.4

 6 ................................................................. 23.0 9.2 5.0 1.6 2.6 6.6

 7 ................................................................. 14.0 5.0 2.7 0.8 1.5 9.8

 8 ................................................................. 9.8 3.6 2.2 0.6 0.9 10.2

 9 or More ..................................................... 7.2 2.4 1.4 0.4 0.6 15.5

Bedrooms

 None or 1 ..................................................... 13.6 3.5 1.4 0.5 1.6 13.7

 2 .................................................................. 29.5 9.9 5.4 1.9 2.6 7.2

 3 .................................................................. 44.1 18.7 10.1 3.2 5.5 5.5

 4 or More ..................................................... 19.8 6.9 3.5 1.2 2.1 8.9

Other Rooms

(Excluding Bathrooms)

 None or 1 ..................................................... 4.2 1.2 0.6 0.3 Q 19.0

 2 .................................................................. 39.4 14.1 6.6 2.7 4.9 6.4

 3 .................................................................. 35.0 13.5 7.3 2.2 4.0 6.9

 4 .................................................................. 18.4 6.6 3.7 1.0 1.8 9.2

 5 or More ..................................................... 10.0 3.5 2.1 0.6 0.8 13.2

Full Bathrooms

 None or 1 ..................................................... 58.5 17.8 8.7 3.4 5.7 5.3

 2 .................................................................. 41.2 17.8 9.9 2.8 5.1 6.2

 3 or More ..................................................... 7.3 3.3 1.7 0.6 0.9 16.2

Half Bathrooms

 None ........................................................... 76.6 28.6 14.1 5.4 9.1 1.9

 1 .................................................................. 27.9 9.3 5.4 1.3 2.5 5.8

 2 or More ..................................................... 2.5 1.1 0.8 Q Q 14.5

Number of Stories

 Single-Family Homes .................................. 73.7 28.6 14.8 5.1 8.7 3.3

 1 Story ....................................................... 44.2 21.1 10.0 3.9 7.2 4.4

 2 Stories .................................................... 26.4 6.9 4.4 1.1 1.4 10.2

 3 or More Stories ....................................... 1.6 Q Q Q Q 30.2

 Split-Level .................................................. 1.3 0.3 Q Q Q 38.3

 Other ......................................................... Q Q Q Q Q NF

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-11a. Housing Unit Characteristics by South Census Region,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

South Census Region

RSE

Row

Factors

Total

Census Division

South Atlantic East South Central West South Central

0.5 0.9 1.2 1.4 1.4

 Apartments in Buildings With

 2 to 4 Units .................................................. 9.5 2.6 1.4 Q 0.7 17.3

 1 Story ....................................................... 4.5 1.8 0.9 Q 0.6 20.9

 2 Stories .................................................... 3.9 0.7 0.4 Q Q 28.5

 3 or More Stories ....................................... 1.1 Q Q Q Q 45.8

 Split-Level .................................................. Q Q Q Q Q NF

 Other ......................................................... Q Q Q Q Q NF

 Mobile Homes ............................................. 6.8 3.3 1.5 0.9 0.9 20.2

Number of Floors for Apartments in

Buildings With 5 or More Units .................. 17.0 4.5 2.6 0.4 1.5 14.0

 1 or 2 Floors .............................................. 8.9 3.2 1.6 0.3 1.3 12.4

 3 or 4 Floors .............................................. 4.7 0.9 0.6 Q Q 37.7

 5 to 10 Floors ............................................ 2.4 Q Q Q Q 32.0

 11 to 20 Floors .......................................... 0.9 Q Q Q Q 47.9

 More than 20 Floors .................................. Q Q Q Q Q NF

Foundation/Basement of Single-Family

Homes and Apartments in Buildings With

2 to 4 Units (More than one may apply)

 Basement .................................................... 39.1 7.9 5.1 1.7 1.1 10.1

 Crawlspace .................................................. 24.2 10.6 5.2 2.7 2.8 9.0

 Concrete Slab .............................................. 29.5 15.1 7.3 1.6 6.2 6.3

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ........................................... 23.8 7.7 4.1 1.2 2.4 10.7

Heated Basement in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes .............................................................. 28.3 4.8 3.3 1.3 0.3 14.2

 All .............................................................. 22.1 3.5 2.5 0.9 Q 13.7

 Part ............................................................ 6.2 1.3 0.9 0.4 Q 14.0

 No ................................................................ 10.8 3.1 1.8 0.5 0.8 13.1

 No Basement ............................................... 44.0 23.3 11.1 3.9 8.3 4.1

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ........................................... 23.8 7.7 4.1 1.2 2.4 10.7

Attic in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes .............................................................. 24.6 11.4 5.9 1.8 3.7 10.9

 Finished ..................................................... 3.5 1.1 0.5 0.2 0.5 24.1

 Unfinished ................................................. 21.1 10.3 5.4 1.7 3.2 11.1

 No Attic ........................................................ 58.6 19.8 10.4 3.7 5.7 6.2

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ........................................... 23.8 7.7 4.1 1.2 2.4 10.7

Heated Attic in Single-Family

Homes and Apartments in

Buildings With 2 to 4 Units

 Yes .............................................................. 4.5 2.1 0.8 0.5 0.8 18.2

 Fully Heated .............................................. 2.7 1.2 0.5 0.3 0.4 20.3

 Partially Heated ......................................... 1.8 0.9 Q 0.2 0.4 26.5

 Attic Not Heated .......................................... 20.1 9.3 5.1 1.4 2.9 12.1

 No Attic ........................................................ 58.6 19.8 10.4 3.7 5.7 6.2

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ........................................... 23.8 7.7 4.1 1.2 2.4 10.7

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-11a. Housing Unit Characteristics by South Census Region,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

South Census Region

RSE

Row

Factors

Total

Census Division

South Atlantic East South Central West South Central

0.5 0.9 1.2 1.4 1.4

Garage/Carport

(single-family and mobile homes)

 Yes .............................................................. 58.4 20.1 9.5 3.3 7.3 4.3

 Attached .................................................... 37.1 12.5 6.6 1.8 4.0 8.5

 1-Car Garage .......................................... 10.8 3.6 2.0 0.6 1.0 16.5

 2-Car Garage .......................................... 24.1 8.5 4.4 1.1 2.9 10.5

 3 or more Car Garage ............................. 2.3 0.4 Q Q Q 28.1

 Detached ................................................... 17.0 4.8 1.8 0.9 2.1 13.5

 1-Car Garage .......................................... 6.9 2.1 0.8 0.5 0.8 14.9

 2-Car Garage .......................................... 8.7 2.3 0.7 0.3 1.2 16.6

 3 or more Car Garage ............................. 1.4 0.5 Q Q Q 30.6

 Carport (only) ............................................ 4.2 2.7 1.2 0.5 1.1 17.5

 No ................................................................ 22.1 11.8 6.8 2.7 2.3 10.1

 Not Asked (Apartments) .............................. 26.5 7.1 4.0 0.9 2.2 12.6

Fuels Used For Any Use

(more than one often used)

 Electricity ..................................................... 107.0 38.9 20.3 6.8 11.8 NE

 Natural Gas ................................................. 66.9 18.7 8.0 2.9 7.8 7.0

 Wood ........................................................... 14.5 5.2 2.8 0.9 1.5 11.2

 Fuel Oil ........................................................ 8.7 0.9 0.9 Q Q 29.2

 LPG ............................................................. 9.4 3.8 2.1 1.3 0.5 16.6

 Kerosene ..................................................... 2.9 1.4 1.0 0.3 Q 18.9

 Solar ........................................................... 1.1 Q Q Q Q 35.7

Main Heating Fuel

 Natural Gas ................................................. 59.3 15.7 6.8 2.4 6.5 7.7

 Electricity ..................................................... 31.1 19.4 11.0 3.4 4.9 7.5

 Fuel Oil ........................................................ 8.0 0.8 0.8 Q Q 28.9

 LPG ............................................................. 5.0 2.0 1.0 0.8 0.3 22.1

 Wood ........................................................... 2.0 0.6 0.4 Q Q 30.5

 Kerosene ..................................................... 0.8 0.4 0.3 Q Q 29.8

 Solar ............................................................ Q Q Q Q Q NF

 Other/None .................................................. 0.7 Q Q Q Q 40.1

Natural Gas Available in Neighborhood

 Yes .............................................................. 77.7 23.7 10.4 3.8 9.4 4.9

 No ................................................................ 29.3 15.2 9.9 3.0 2.4 9.1

1 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this report, the

heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65 degrees Fahrenheit. 

A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 2 Does not include floorspace for unheated garages. 3 New construction for 2001 includes only those housing units built and occupied between January and the April-August period when the household interviews were

conducted. 4 Based on the household respondent’s description rather than the Federal Government definition.

-- = Data not applicable.

NE = RSE row factor not estimated because RSE’s for all statistics in this row are between 0.0 and 1.0 percent.

NF = No applicable RSE row factor.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2001 Residential Energy Consumption Survey.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-12a. Housing Unit Characteristics by West Census Region,

 Million U.S. Households, 2001

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

West Census Region

RSE

Row

Factors

Total

Census Division

Mountain Pacific

0.5 1.0 1.7 1.1

Total .............................................................. 107.0 23.3 6.7 16.6 NE

Census Region and Division

 Northeast ..................................................... 20.3 -- -- -- NF

 New England ............................................. 5.4 -- -- -- NF

 Middle Atlantic ........................................... 14.8 -- -- -- NF

 Midwest ....................................................... 24.5 -- -- -- NF

 East North Central ..................................... 17.1 -- -- -- NF

 West North Central .................................... 7.4 -- -- -- NF

 South ........................................................... 38.9 -- -- -- NF

 South Atlantic ............................................ 20.3 -- -- -- NF

 East South Central .................................... 6.8 -- -- -- NF

 West South Central ................................... 11.8 -- -- -- NF

 West ............................................................ 23.3 23.3 6.7 16.6 NF

 Mountain .................................................... 6.7 6.7 6.7 Q NF

 Pacific ........................................................ 16.6 16.6 Q 16.6 NF

Metropolitan Statistical Area

 Urban ........................................................... 85.5 20.7 5.3 15.4 3.8

 Central City ................................................ 40.0 11.8 3.8 7.9 6.2

 Suburban ................................................... 45.5 8.9 1.5 7.4 7.6

 Rural ............................................................ 21.5 2.6 1.4 1.2 12.0

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ............................... 9.2 1.9 1.0 0.9 9.1

 5,500 to 7,000 HDD ................................... 28.6 3.9 2.9 Q 18.7

 4,000 to 5,499 HDD ................................... 24.0 2.5 Q 2.5 26.4

 Fewer than 4,000 HDD .............................. 21.0 11.1 Q 10.7 5.3

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................................ 24.1 3.9 2.4 1.5 9.1

Total Floorspace Category2

(square feet)

 Fewer than 500 ........................................... 3.9 1.1 0.3 0.8 14.6

 500 to 999 .................................................. 21.8 6.6 1.6 5.0 7.4

 1,000 to 1,499 ............................................ 22.7 5.5 1.6 3.9 5.3

 1,500 to 1,999 ............................................ 16.6 3.3 1.0 2.3 6.5

 2,000 to 2,499 ............................................ 13.5 2.5 0.8 1.7 10.7

 2,500 to 2,999 ............................................ 9.3 1.6 0.6 1.0 11.3

 3,000 to 3,499 ............................................ 6.9 1.1 0.4 0.7 14.3

 3,500 to 3,999 ............................................ 4.1 0.6 Q 0.5 17.1

 4,000 or More ............................................. 8.2 1.0 0.4 0.6 19.0

Type and Ownership of Housing Unit

 Single-Family Detached .............................. 63.1 13.0 4.0 9.0 5.0

 Owned ....................................................... 55.7 10.9 3.5 7.4 5.9

 Rented ....................................................... 7.4 2.1 0.5 1.5 8.9

 Single-Family Attached ............................... 10.6 1.8 0.6 1.2 15.5

 Owned ....................................................... 7.5 1.0 0.3 0.7 20.4

 Rented ....................................................... 3.1 0.8 0.3 0.5 17.1

 Apartments in Buildings With

 2 to 4 Units .................................................. 9.5 1.6 0.5 1.1 15.3

 Owned ....................................................... 2.1 0.2 Q Q 33.1

 Rented ....................................................... 7.4 1.4 0.4 1.0 16.3

 Apartments in Buildings With

 5 or More Units ............................................ 17.0 5.3 0.9 4.4 12.1

 Owned ....................................................... 1.8 0.5 Q 0.3 40.8

 Rented ....................................................... 15.2 4.7 0.6 4.1 12.8

 Mobile Homes ............................................. 6.8 1.7 0.8 0.9 20.3

 Owned ....................................................... 5.7 1.5 0.6 0.8 22.7

 Rented ....................................................... 1.1 0.2 Q Q 34.6

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-12a. Housing Unit Characteristics by West Census Region,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

West Census Region

RSE

Row

Factors

Total

Census Division

Mountain Pacific

0.5 1.0 1.7 1.1

Ownership of Unit

 Owned ......................................................... 72.7 14.1 4.7 9.4 4.1

 Rented ......................................................... 34.3 9.2 2.0 7.2 7.4

Year of Construction

 1939 or Before ............................................. 19.0 2.4 0.7 1.7 10.3

 1940 to 1949 ............................................... 7.6 1.6 0.5 1.2 13.7

 1950 to 1959 ............................................... 14.2 3.3 0.8 2.5 12.0

 1960 to 1969 ............................................... 13.8 3.7 0.8 2.8 9.8

 1970 to 1979 ............................................... 18.8 5.4 1.9 3.5 6.7

 1980 to 1989 ............................................... 18.2 3.4 0.9 2.4 10.0

 1990 to 1999 ............................................... 14.5 3.4 1.1 2.3 18.2

 2000 to 20013 .............................................. 0.9 0.2 Q Q 37.4

Urban/Rural Location4

 City .............................................................. 49.9 14.4 4.2 10.3 4.0

 Town ............................................................ 18.0 3.5 1.2 2.4 11.5

 Suburbs ....................................................... 21.2 2.7 0.6 2.1 11.1

 Rural or Open Country ................................ 17.9 2.6 0.7 1.9 12.1

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ........................................................... 2.6 0.8 Q 0.7 22.4

 3 ................................................................. 9.2 2.9 0.7 2.2 11.0

 4 ................................................................. 19.0 5.5 1.5 3.9 8.5

 5 ................................................................. 22.2 4.0 1.2 2.7 5.6

 6 ................................................................. 23.0 4.5 1.3 3.3 6.1

 7 ................................................................. 14.0 2.6 0.9 1.7 9.0

 8 ................................................................. 9.8 1.7 0.6 1.1 12.8

 9 or More ..................................................... 7.2 1.3 0.5 0.8 15.3

Bedrooms

 None or 1 ..................................................... 13.6 3.9 0.9 3.0 8.6

 2 .................................................................. 29.5 7.5 2.2 5.3 6.9

 3 .................................................................. 44.1 8.0 2.4 5.6 5.6

 4 or More ..................................................... 19.8 3.9 1.3 2.6 9.6

Other Rooms

(Excluding Bathrooms)

 None or 1 ..................................................... 4.2 1.4 0.2 1.1 18.6

 2 .................................................................. 39.4 10.4 2.8 7.6 5.1

 3 .................................................................. 35.0 6.4 1.9 4.4 4.3

 4 .................................................................. 18.4 3.4 1.0 2.3 7.7

 5 or More ..................................................... 10.0 1.7 0.7 1.0 11.7

Full Bathrooms

 None or 1 ..................................................... 58.5 11.5 3.2 8.3 5.1

 2 .................................................................. 41.2 9.7 2.9 6.8 5.7

 3 or More ..................................................... 7.3 2.1 0.6 1.5 16.3

Half Bathrooms

 None ........................................................... 76.6 18.2 5.3 12.9 1.7

 1 .................................................................. 27.9 4.7 1.2 3.5 6.0

 2 or More ..................................................... 2.5 0.4 0.2 0.2 17.5

Number of Stories

 Single-Family Homes .................................. 73.7 14.8 4.6 10.2 4.0

 1 Story ....................................................... 44.2 10.3 3.2 7.1 4.7

 2 Stories .................................................... 26.4 3.9 1.0 2.9 10.0

 3 or More Stories ....................................... 1.6 0.3 Q Q 31.3

 Split-Level .................................................. 1.3 0.3 Q Q 39.0

 Other ......................................................... Q Q Q Q NF

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-12a. Housing Unit Characteristics by West Census Region,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

West Census Region

RSE

Row

Factors

Total

Census Division

Mountain Pacific

0.5 1.0 1.7 1.1

 Apartments in Buildings With

 2 to 4 Units .................................................. 9.5 1.6 0.5 1.1 15.3

 1 Story ....................................................... 4.5 1.0 0.3 0.7 20.3

 2 Stories .................................................... 3.9 0.6 Q 0.4 19.1

 3 or More Stories ....................................... 1.1 Q Q Q 41.4

 Split-Level .................................................. Q Q Q Q NF

 Other ......................................................... Q Q Q Q NF

 Mobile Homes ............................................. 6.8 1.7 0.8 0.9 20.3

Number of Floors for Apartments in

Buildings With 5 or More Units .................. 17.0 5.3 0.9 4.4 12.1

 1 or 2 Floors .............................................. 8.9 3.2 0.5 2.7 11.9

 3 or 4 Floors .............................................. 4.7 1.8 Q 1.4 25.2

 5 to 10 Floors ............................................ 2.4 Q Q Q 28.9

 11 to 20 Floors .......................................... 0.9 Q Q Q 43.3

 More than 20 Floors .................................. Q Q Q Q NF

Foundation/Basement of Single-Family

Homes and Apartments in Buildings With

2 to 4 Units (More than one may apply)

 Basement .................................................... 39.1 3.8 1.8 2.1 9.8

 Crawlspace .................................................. 24.2 7.4 1.5 5.9 9.1

 Concrete Slab .............................................. 29.5 8.0 2.5 5.5 5.9

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ........................................... 23.8 6.9 1.6 5.3 9.0

Heated Basement in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes .............................................................. 28.3 2.2 1.3 0.9 10.4

 All .............................................................. 22.1 1.7 1.1 0.6 9.9

 Part ............................................................ 6.2 0.5 0.3 0.3 20.3

 No ................................................................ 10.8 1.6 0.4 1.1 16.1

 No Basement ............................................... 44.0 12.6 3.3 9.2 4.4

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ........................................... 23.8 6.9 1.6 5.3 9.0

Attic in Single-Family Homes

and Apartments in Buildings

With 2 to 4 Units

 Yes .............................................................. 24.6 2.1 0.4 1.7 14.8

 Finished ..................................................... 3.5 0.4 Q 0.4 27.6

 Unfinished ................................................. 21.1 1.7 0.3 1.3 15.5

 No Attic ........................................................ 58.6 14.3 4.7 9.6 3.6

 Not Asked (Mobile Homes and 

 Apartments in Buildings With 

 5 or More Units) ........................................... 23.8 6.9 1.6 5.3 9.0

Heated Attic in Single-Family

Homes and Apartments in

Buildings With 2 to 4 Units

 Yes .............................................................. 4.5 0.3 Q 0.3 26.0

 Fully Heated .............................................. 2.7 Q Q Q 21.2

 Partially Heated ......................................... 1.8 Q Q Q 27.5

 Attic Not Heated .......................................... 20.1 1.8 0.3 1.4 15.6

 No Attic ........................................................ 58.6 14.3 4.7 9.6 3.6

 Not Asked (Mobile Homes and 

 Apartments in Buildings With

 5 or More Units) ........................................... 23.8 6.9 1.6 5.3 9.0

See footnotes at end of table.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables
Table HC1-12a. Housing Unit Characteristics by West Census Region,

 Million U.S. Households, 2001 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

U.S.

West Census Region

RSE

Row

Factors

Total

Census Division

Mountain Pacific

0.5 1.0 1.7 1.1

Garage/Carport

(single-family and mobile homes)

 Yes .............................................................. 58.4 13.4 3.8 9.6 4.3

 Attached .................................................... 37.1 9.0 2.3 6.7 6.9

 1-Car Garage .......................................... 10.8 1.9 0.4 1.5 13.1

 2-Car Garage .......................................... 24.1 6.4 1.8 4.5 8.1

 3 or more Car Garage ............................. 2.3 0.7 Q 0.7 26.1

 Detached ................................................... 17.0 3.3 1.1 2.2 10.1

 1-Car Garage .......................................... 6.9 1.3 0.6 0.8 13.4

 2-Car Garage .......................................... 8.7 1.7 0.5 1.2 14.1

 3 or more Car Garage ............................. 1.4 0.3 Q 0.2 30.1

 Carport (only) ............................................ 4.2 1.1 0.4 0.7 17.7

 No ................................................................ 22.1 3.0 1.6 1.5 9.4

 Not Asked (Apartments) .............................. 26.5 6.8 1.3 5.5 9.4

Fuels Used For Any Use

(more than one often used)

 Electricity ..................................................... 107.0 23.3 6.7 16.6 NE

 Natural Gas ................................................. 66.9 16.3 4.7 11.6 2.6

 Wood ........................................................... 14.5 4.6 1.0 3.5 10.4

 Fuel Oil ........................................................ 8.7 0.2 Q 0.2 24.8

 LPG ............................................................. 9.4 1.5 0.5 1.0 17.4

 Kerosene ..................................................... 2.9 0.4 Q 0.3 18.2

 Solar ........................................................... 1.1 0.6 Q 0.5 25.9

Main Heating Fuel

 Natural Gas ................................................. 59.3 14.1 4.2 9.9 2.6

 Electricity ..................................................... 31.1 6.9 2.0 4.9 5.9

 Fuel Oil ........................................................ 8.0 0.2 Q Q 26.9

 LPG ............................................................. 5.0 0.7 0.4 0.4 25.2

 Wood ........................................................... 2.0 0.8 0.2 0.6 16.8

 Kerosene ..................................................... 0.8 Q Q Q 33.6

 Solar ............................................................ Q Q Q Q NF

 Other/None .................................................. 0.7 0.5 Q 0.5 18.9

Natural Gas Available in Neighborhood

 Yes .............................................................. 77.7 18.0 5.2 12.9 2.9

 No ................................................................ 29.3 5.3 1.6 3.7 9.2

1 One of five climatically distinct areas, determined according to the 30-year average (1961-1990) of the annual heating and cooling degree-days. For this report,

the heating or cooling degree-days are a measure of how cold or how hot a location is over a period of one year, relative to a base temperature of 65 degrees

Fahrenheit. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station. 2 Does not include floorspace for unheated garages. 3 New construction for 2001 includes only those housing units built and occupied between January and the April-August period when the household interviews

were conducted. 4 Based on the household respondent’s description rather than the Federal Government definition.

-- = Data not applicable.

NE = RSE row factor not estimated because RSE’s for all statistics in this row are between 0.0 and 1.0 percent.

NF = No applicable RSE row factor.

Q = Data withheld either because the Relative Standard Error (RSE) was greater than 50 percent or fewer than 10 households were sampled.

Notes: • To obtain the RSE percentage for any table cell, multiply the corresponding column and row factors. • Because of rounding, data may not sum to totals. 

• See "Glossary" for definition of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2001 Residential Energy Consumption Survey.

Energy Information Administration

2001 Residential Energy Consumption Survey: Housing Characteristics Tables