5HVLGHQWLDO (QHUJ\ &RQVXPSWLRQ 6XUYH\V

1997 Housing Characteristics Tables

Housing Unit Tables

(Percent of U.S. Households; 45 pages, 121 kb)

Contents Pages

HC1-1b. Housing Unit Characteristics by Climate Zone, Percent of U.S. Households, 1997 4

HC1-2b. Housing Unit Characteristics by Year of Construction, Percent of U.S. Households, 1997 4

HC1-3b. Housing Unit Characteristics by Household Income, Percent of U.S. Households, 1997 4

HC1-4b. Housing Unit Characteristics by Type of Housing Unit, Percent of U.S. Households, 1997 3

HC1-5b. Housing Unit Characteristics by Type of Owner-Occupied Housing Unit, Percent of U.S. Households, 1997 3

HC1-6b. Housing Unit Characteristics by Type of Rented Housing Unit, Percent of U.S. Households, 1997 3

HC1-7b. Housing Unit Characteristics by Four Most Populated States, Percent of U.S. Households, 1997 4 

HC1-8b. Housing Unit Characteristics by Urban/Rural Location, Percent of U.S. Households, 1997 4

HC1-9b. Housing Unit Characteristics by Northeast Census Region, Percent of U.S. Households, 1997 4

HC1-10b. Housing Unit Characteristics by Midwest Census Region, Percent of U.S. Households, 1997 4

HC1-11b. Housing Unit Characteristics by South Census Region, Percent of U.S. Households, 1997 4 

HC1-12b. Housing Unit Characteristics by West Census Region, Percent of U.S. Households, 1997 4

These data are from the 1997 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 data for

occupied primary housing units. RECS was first conducted in 1978; the sixth and most recent survey was conducted in

1997 RECS. The data were collected from a sample of 5,900 housing units statistically selected to represent the 101.5

million units in the United States. The 1997 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, “A Look at

Residential Energy Consumption in 1997.”

Electronic Products and Services

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

applications, and find out about new information products and services.

Contact: Robert Latta, Survey Manager (rlatta@eia.doe.gov)

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

 Percent of U.S. Households, 1997

Housing Unit

Characteristics

RSE Column Factor:

Total

Climate Zone

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

0.5 1.5 1.0 1.1 1.2 1.0

Total ............................................... 100.0 100.0 100.0 100.0 100.0 100.0 0.0

Census Region and Division

 Northeast ...................................... 19.4 21.4 34.3 36.2 Q Q 11.3

 New England .............................. 5.2 15.7 13.8 Q Q Q 18.8

 Middle Atlantic ............................ 14.2 5.7 20.5 36.2 Q Q 10.6

 Midwest ......................................... 23.7 58.8 52.4 17.5 Q Q 12.7

 East North Central ...................... 16.7 29.2 44.1 Q Q Q 13.9

 West North Central ..................... 7.0 29.6 Q 9.3 Q Q 23.8

 South ............................................ 35.4 Q Q 35.5 47.1 84.3 5.1

 South Atlantic .............................. 18.4 Q Q 25.4 26.5 35.3 7.8

 East South Central ...................... 6.3 Q Q 10.2 13.3 Q 35.8

 West South Central ..................... 10.7 Q Q Q Q 42.4 7.6

 West .............................................. 21.5 19.8 13.4 10.8 52.9 15.7 15.1

 Mountain ..................................... 6.1 9.9 9.8 Q Q 9.5 14.3

 Pacific ......................................... 15.4 9.9 Q 10.8 50.8 6.2 13.4

Metropolitan Statistical Area

 Urban ............................................ 77.5 46.3 82.8 79.6 74.8 84.0 6.3

 Central City ................................. 36.2 27.4 37.2 33.2 35.1 42.8 11.5

 Suburban .................................... 41.3 19.0 45.7 46.4 39.7 41.2 10.1

 Rural ............................................. 22.5 53.7 17.2 20.4 25.2 16.0 16.1

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ................. 9.1 100.0 -- -- -- -- 35.6

 5,500 to 7,000 HDD .................... 27.6 -- 100.0 -- -- -- 17.8

 4,000 to 5,499 HDD .................... 22.2 -- -- 100.0 -- -- 17.6

 Fewer than 4,000 HDD ............... 19.2 -- -- -- 100.0 -- 19.2

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................. 21.9 -- -- -- -- 100.0 14.0

Estimated Heated Floorspace

Category (square feet)2

 Fewer than 600 ............................. 7.8 5.5 7.0 8.9 10.3 6.3 11.2

 600 to 999 .................................... 21.2 22.7 22.1 20.4 22.4 19.1 6.9

 1,000 to 1,599 .............................. 29.9 33.2 27.4 26.5 33.5 32.0 5.7

 1,600 to 1,999 .............................. 15.1 15.5 16.6 14.6 13.5 14.7 8.4

 2,000 to 2,399 .............................. 7.8 6.3 7.9 7.6 7.5 8.7 10.2

 2,400 to 2,999 .............................. 5.3 5.1 6.1 4.9 4.8 5.0 14.2

 3,000 or More .............................. 4.1 4.5 4.3 2.9 2.9 5.8 18.9

 No Estimate Provided ................... 9.0 7.3 8.6 14.2 5.1 8.4 13.6

Ownership of Unit

 Owned .......................................... 67.5 75.8 68.9 65.8 61.7 68.9 3.1

 Rented .......................................... 32.5 24.2 31.1 34.2 38.3 31.1 6.6

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-1b. Housing Unit Characteristics by Climate Zone, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Climate Zone

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

0.5 1.5 1.0 1.1 1.2 1.0

Type and Ownership of Housing

Unit

 Single-Family Detached ................ 62.9 73.7 63.1 57.2 61.4 65.1 3.7

 Owned ........................................ 54.8 66.1 57.1 50.0 50.6 55.8 4.1

 Rented ........................................ 8.0 7.6 6.0 7.1 10.8 9.3 11.4

 Single-Family Attached ................. 9.8 9.9 9.8 13.0 9.0 7.2 14.7

 Owned ........................................ 5.4 4.7 4.9 8.9 3.9 4.1 20.2

 Rented ........................................ 4.4 5.1 5.0 4.1 5.1 3.1 16.0

 Multifamily (2 to 4 units) ................ 5.5 5.2 7.9 5.8 4.3 3.5 16.3

 Owned ........................................ 0.9 Q 1.9 1.0 Q Q 32.5

 Rented ........................................ 4.6 4.4 6.0 4.8 4.1 3.2 17.9

 Multifamily (5 or more units) ......... 15.6 6.3 14.3 19.2 17.8 15.4 13.7

 Owned ........................................ 1.1 Q 1.1 1.8 Q 1.4 37.7

 Rented ........................................ 14.4 6.1 13.2 17.4 17.1 14.0 13.5

 Mobile Home ................................. 6.2 4.9 4.8 4.9 7.5 8.8 17.3

 Owned ........................................ 5.2 3.9 4.0 4.1 6.3 7.3 19.3

 Rented ........................................ 1.1 Q 0.8 0.8 1.2 1.5 28.5

Year of Construction

 1939 or Before .............................. 18.5 35.4 25.3 22.5 9.7 6.3 10.4

 1940 to 1949 ................................. 9.1 7.4 8.9 9.5 12.9 6.1 10.8

 1950 to 1959 ................................. 12.4 9.9 13.3 11.6 12.8 12.6 8.2

 1960 to 1969 ................................. 14.2 9.3 13.9 13.5 15.9 16.0 8.6

 1970 to 1979 ................................. 19.3 16.3 18.1 16.8 20.3 23.6 8.0

 1980 to 1989 ................................. 17.1 11.6 12.1 18.7 17.2 23.7 10.8

 1990 to 19973 ............................... 9.6 10.2 8.5 7.3 11.1 11.7 14.5

Urban/Rural Location4

 City ................................................ 47.5 40.4 43.8 37.9 58.2 55.6 6.2

 Town ............................................. 17.9 25.6 20.1 18.9 16.5 12.3 14.6

 Suburbs ........................................ 18.3 10.3 20.9 25.2 11.0 17.8 12.4

 Rural or Open Country .................. 16.2 23.7 15.2 18.0 14.2 14.3 12.1

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ............................................. 3.0 Q 2.6 2.5 4.9 2.8 18.2

 3 ................................................... 9.0 5.8 7.2 10.4 10.8 9.8 12.2

 4 ................................................... 18.0 15.8 18.5 19.4 19.0 16.2 8.3

 5 ................................................... 20.9 22.1 19.1 17.1 22.8 25.0 6.4

 6 ................................................... 19.7 23.0 19.2 20.0 19.9 18.8 6.1

 7 ................................................... 14.0 12.9 15.4 15.0 10.7 14.8 8.2

 8 ................................................... 8.3 9.4 10.1 8.8 6.7 6.2 12.4

 9 or More ...................................... 6.9 8.9 7.9 6.8 5.3 6.5 12.2

Bedrooms

 None or 1 ...................................... 13.0 9.9 11.6 14.9 15.1 12.1 10.2

 2 .................................................... 28.4 27.3 27.2 29.3 29.4 28.5 5.8

 3 .................................................... 40.4 43.7 39.8 38.2 38.9 43.2 5.0

 4 or More ...................................... 18.3 19.1 21.4 17.6 16.6 16.2 7.9

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-1b. Housing Unit Characteristics by Climate Zone, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Climate Zone

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

0.5 1.5 1.0 1.1 1.2 1.0

Other Rooms

(Excluding Bathrooms)

 None or 1 ...................................... 5.0 3.5 4.2 3.8 7.3 5.7 16.0

 2 .................................................... 38.1 33.1 36.5 36.5 43.8 38.6 4.3

 3 .................................................... 30.5 35.1 28.4 31.3 28.9 32.0 5.2

 4 .................................................... 17.3 16.0 20.3 19.0 13.5 15.7 7.6

 5 or More ...................................... 9.1 12.3 10.6 9.3 6.5 8.0 10.2

Full Bathrooms

 None or 1 ...................................... 58.5 66.9 65.4 62.8 52.9 46.8 3.2

 2 .................................................... 35.4 27.4 29.4 33.0 39.2 45.5 5.2

 3 or More ...................................... 6.1 5.7 5.2 4.2 7.9 7.6 17.2

Half Bathrooms

 None ............................................ 72.0 72.3 67.0 66.9 78.2 77.8 2.1

 1 .................................................... 26.1 26.1 30.3 30.2 21.1 21.2 5.9

 2 or More ...................................... Q Q Q Q Q Q NF

Number of Stories

 Single-Family Homes .................... 72.7 83.6 72.9 70.2 70.4 72.2 2.9

 1 Story ........................................ 40.5 35.5 29.0 29.5 50.2 59.7 6.4

 2 Stories ...................................... 26.5 41.7 35.7 30.5 18.4 11.9 8.0

 3 Stories ...................................... 3.2 3.5 4.5 6.4 Q Q 15.8

 Split-Level ................................... 2.4 2.9 3.4 3.9 Q Q 21.1

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

 Mobile Homes ............................... 6.2 4.9 4.8 4.9 7.5 8.8 17.3

Number of Floors in

Apartment Buildings

 1 or 2 Floors .................................. 10.7 6.0 9.8 7.9 13.3 14.6 13.7

 3 or 4 Floors .................................. 5.3 3.6 7.0 7.3 5.9 1.5 28.3

 5 to 10 Floors ................................ 2.0 Q 1.7 5.3 Q Q 21.4

 11 to 20 Floors .............................. 0.8 Q Q 1.9 Q Q 28.8

 More than 20 Floors ...................... 0.2 Q Q Q Q Q 58.7

 Don’t Know/No Answer ................. 2.0 Q 2.8 2.4 1.7 1.3 24.9

Foundation/Basement

of Single-Family Homes

(More than one may apply)

 Basement ...................................... 32.7 65.7 55.1 40.3 8.8 3.9 8.6

 Crawlspace ................................... 22.2 13.0 16.0 21.1 36.2 22.5 9.9

 Concrete Slab ............................... 22.6 8.8 9.1 14.0 28.5 49.0 9.5

 Not Asked (Mobile Homes

 and Multi-Family Units) ................. 27.3 16.4 27.1 29.8 29.6 27.8 8.3

Garage/Carport

 Yes ................................................ 53.7 65.9 55.5 48.6 51.2 53.6 3.9

 1-Car Garage .............................. 16.0 25.5 16.1 19.8 13.1 10.6 9.1

 2-Car Garage .............................. 29.2 34.0 33.7 21.3 30.1 28.8 7.3

 3-Car Garage .............................. 2.7 3.5 3.9 2.3 2.5 1.6 17.8

 Covered Carport ......................... 6.3 3.6 2.2 6.0 6.3 13.2 15.5

 No ................................................. 25.2 22.6 22.3 26.5 26.7 27.5 8.2

 Not Asked (Apartments) ............... 21.1 11.5 22.2 24.9 22.1 19.0 10.5

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-1b. Housing Unit Characteristics by Climate Zone, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Climate Zone

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

0.5 1.5 1.0 1.1 1.2 1.0

Fuels Used For Any Use

(more than one often used)

 Electricity ...................................... 100.0 99.8 100.0 100.0 99.9 100.0 NE

 Natural Gas ................................... 61.0 55.1 71.2 56.4 65.0 51.7 5.2

 Wood ............................................ 14.8 21.8 11.6 15.6 17.4 12.9 9.7

 Fuel Oil ......................................... 9.8 21.7 11.2 19.7 1.3 Q 17.1

 LPG ............................................... 8.0 15.4 6.9 7.3 8.7 6.1 20.5

 Kerosene ...................................... 3.4 4.6 2.9 4.0 4.9 1.8 18.8

 Solar ............................................ 0.7 Q Q Q Q 1.6 46.2

Main Heating Fuel

 Natural Gas ................................... 52.7 52.8 66.8 44.1 54.5 42.0 6.1

 Electricity ...................................... 29.2 11.8 15.3 30.1 33.6 49.1 9.2

 Fuel Oil ......................................... 9.3 20.2 10.8 18.8 1.1 Q 16.9

 LPG ............................................... 4.5 5.7 4.5 3.7 5.9 3.8 26.5

 Wood ............................................ 2.2 6.1 1.4 2.1 2.6 1.2 24.2

 Kerosene ...................................... 1.0 Q 0.6 0.5 1.6 Q 29.2

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

 Other/None ................................... 1.1 Q 0.7 0.7 Q 2.8 34.3

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 Estimates provided by the household interview respondents, who were asked which category best described the total heated floorspace in the home. 3 New construction for 1997 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.

 • Percentages are calculated on unrounded numbers. • 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 1997 Residential Energy Consumption Survey.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-2b. Housing Unit Characteristics by Year of Construction, 

 Percent of U.S. Households, 1997

Housing Unit

Characteristics

RSE Column Factor:

Total

Year of Construction

RSE

Row

Factors

1990

 to

19971

1980

to

1989

1970

to

1979

1960

to

1969

1950

to

1959

1949

or

Before

0.5 1.7 1.2 1.0 1.1 1.1 0.8

Total ............................................... 100.0 100.0 100.0 100.0 100.0 100.0 100.0 0.0

Census Region and Division

 Northeast ...................................... 19.4 12.0 13.6 13.5 18.0 21.5 29.7 8.4

 New England .............................. 5.2 2.5 3.2 3.7 6.2 5.7 7.8 13.5

 Middle Atlantic ............................ 14.2 9.5 10.3 9.8 11.8 15.8 21.9 10.6

 Midwest ......................................... 23.7 20.3 16.7 20.5 21.9 21.7 33.3 8.4

 East North Central ...................... 16.7 12.2 10.8 15.4 16.1 16.0 23.3 10.4

 West North Central ..................... 7.0 8.1 5.9 5.1 5.8 5.7 10.0 16.9

 South ............................................ 35.4 47.8 47.3 39.9 35.3 33.5 21.3 5.5

 South Atlantic .............................. 18.4 24.6 29.2 20.3 15.2 17.3 10.4 8.7

 East South Central ...................... 6.3 9.5 6.3 7.6 6.0 6.5 4.2 14.8

 West South Central ..................... 10.7 13.7 11.8 12.0 14.0 9.8 6.7 11.1

 West .............................................. 21.5 19.9 22.4 26.1 24.8 23.3 15.7 7.5

 Mountain ..................................... 6.1 5.8 6.0 8.1 7.8 6.4 3.8 14.5

 Pacific ......................................... 15.4 14.2 16.4 18.0 17.0 16.9 11.9 9.1

Metropolitan Statistical Area

 Urban ............................................ 77.5 73.3 80.7 78.3 79.3 83.0 72.9 2.3

 Central City ................................. 36.2 27.5 28.4 31.2 38.7 40.3 44.6 7.5

 Suburban .................................... 41.3 45.8 52.4 47.1 40.6 42.7 28.3 6.4

 Rural ............................................. 22.5 26.7 19.3 21.7 20.7 17.0 27.1 7.9

Climate Zone2

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ................. 9.1 9.7 6.2 7.7 5.9 7.3 14.2 19.8

 5,500 to 7,000 HDD .................... 27.6 24.4 19.6 25.9 26.9 29.7 34.4 11.2

 4,000 to 5,499 HDD .................... 22.2 16.8 24.4 19.4 21.1 20.9 25.8 12.5

 Fewer than 4,000 HDD ............... 19.2 22.4 19.4 20.2 21.5 19.9 15.8 12.6

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................. 21.9 26.7 30.4 26.8 24.6 22.3 9.8 10.0

Estimated Heated Floorspace

Category (square feet)3

 Fewer than 600 ............................. 7.8 5.2 6.3 7.8 8.7 6.2 9.8 12.5

 600 to 999 .................................... 21.2 11.6 16.8 26.6 22.2 21.1 22.9 7.8

 1,000 to 1,599 .............................. 29.9 31.3 30.2 24.9 31.5 37.6 28.5 6.1

 1,600 to 1,999 .............................. 15.1 15.0 17.2 14.8 14.9 15.9 13.7 7.9

 2,000 to 2,399 .............................. 7.8 9.5 8.0 9.6 7.2 6.5 6.6 11.2

 2,400 to 2,999 .............................. 5.3 9.3 9.6 5.5 3.7 2.4 3.0 15.5

 3,000 or More .............................. 4.1 13.0 4.4 3.8 2.2 2.0 2.9 19.6

 No Estimate Provided ................... 9.0 5.2 7.6 6.9 9.4 8.4 12.7 12.7

Ownership of Unit

 Owned .......................................... 67.5 78.6 69.2 65.4 63.7 70.9 64.4 2.8

 Rented .......................................... 32.5 21.4 30.8 34.6 36.3 29.1 35.6 6.2

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-2b. Housing Unit Characteristics by Year of Construction, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Year of Construction

RSE

Row

Factors

1990

 to

19971

1980

to

1989

1970

to

1979

1960

to

1969

1950

to

1959

1949

or

Before

0.5 1.7 1.2 1.0 1.1 1.1 0.8

Type and Ownership of Housing

Unit

 Single-Family Detached ................ 62.9 64.7 55.3 54.2 62.1 79.2 66.0 3.3

 Owned ........................................ 54.8 60.2 50.7 48.0 54.3 66.9 55.2 3.7

 Rented ........................................ 8.0 4.5 4.6 6.2 7.8 12.3 10.9 12.7

 Single-Family Attached ................. 9.8 8.8 13.6 8.7 6.6 5.8 12.0 14.1

 Owned ........................................ 5.4 4.7 9.2 4.9 2.1 2.2 6.7 21.0

 Rented ........................................ 4.4 4.1 4.4 3.8 4.5 3.6 5.3 17.6

 Multifamily (2 to 4 units) ................ 5.5 Q 4.1 4.8 6.1 3.3 9.0 16.1

 Owned ........................................ 0.9 Q Q 1.1 Q Q 2.0 34.0

 Rented ........................................ 4.6 Q 3.7 3.7 5.7 3.1 7.0 17.3

 Multifamily (5 or more units) ......... 15.6 11.3 17.5 21.6 18.8 10.3 12.3 11.4

 Owned ........................................ 1.1 Q Q 2.9 1.6 Q Q 36.0

 Rented ........................................ 14.4 10.4 16.9 18.8 17.2 9.7 11.9 11.7

 Mobile Home ................................. 6.2 13.5 9.5 10.7 6.4 1.4 0.6 17.4

 Owned ........................................ 5.2 12.8 8.2 8.6 5.3 Q Q 14.3

 Rented ........................................ 1.1 Q 1.3 2.1 1.1 Q Q 27.8

Year of Construction

 1939 or Before .............................. 18.5 -- -- -- -- -- 67.1 5.6

 1940 to 1949 ................................. 9.1 -- -- -- -- -- 32.9 8.0

 1950 to 1959 ................................. 12.4 -- -- -- -- 100.0 -- 7.9

 1960 to 1969 ................................. 14.2 -- -- -- 100.0 -- -- 8.1

 1970 to 1979 ................................. 19.3 -- -- 100.0 -- -- -- 7.4

 1980 to 1989 ................................. 17.1 -- 100.0 -- -- -- -- 11.0

 1990 to 19971 ............................... 9.6 100.0 -- -- -- -- -- 14.4

Urban/Rural Location4

 City ................................................ 47.5 33.4 39.7 45.4 46.5 53.1 56.9 5.1

 Town ............................................. 17.9 16.4 17.8 16.5 17.8 15.3 20.8 9.7

 Suburbs ........................................ 18.3 25.2 25.4 19.1 20.2 22.5 8.1 9.5

 Rural or Open Country .................. 16.2 25.0 17.1 19.0 15.4 9.2 14.2 9.0

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ............................................. 3.0 Q 2.9 3.6 3.1 1.7 3.7 21.9

 3 ................................................... 9.0 4.3 7.6 11.8 12.2 6.7 9.1 12.0

 4 ................................................... 18.0 16.4 19.0 19.6 19.9 18.0 16.0 8.3

 5 ................................................... 20.9 25.1 22.6 20.2 19.7 21.7 19.3 6.4

 6 ................................................... 19.7 15.3 17.7 17.1 18.1 23.6 23.4 7.0

 7 ................................................... 14.0 12.0 13.8 13.3 14.9 18.7 12.8 8.8

 8 ................................................... 8.3 10.5 8.4 8.2 7.6 6.5 8.6 12.3

 9 or More ...................................... 6.9 14.4 8.0 6.3 4.5 3.0 7.2 13.8

Bedrooms

 None or 1 ...................................... 13.0 6.3 10.0 15.0 15.3 9.6 16.0 10.7

 2 .................................................... 28.4 21.4 28.6 29.0 29.4 27.5 30.2 5.9

 3 .................................................... 40.4 43.9 43.3 39.4 37.7 49.3 35.3 4.5

 4 or More ...................................... 18.3 28.4 18.1 16.6 17.6 13.6 18.5 8.4

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-2b. Housing Unit Characteristics by Year of Construction, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Year of Construction

RSE

Row

Factors

1990

 to

19971

1980

to

1989

1970

to

1979

1960

to

1969

1950

to

1959

1949

or

Before

0.5 1.7 1.2 1.0 1.1 1.1 0.8

Other Rooms

(Excluding Bathrooms)

 None or 1 ...................................... 5.0 3.9 5.5 6.6 4.7 3.1 4.8 16.1

 2 .................................................... 38.1 40.8 38.4 40.8 45.6 38.2 31.0 4.8

 3 .................................................... 30.5 22.3 28.2 28.0 26.9 35.3 36.4 5.6

 4 .................................................... 17.3 16.5 19.6 16.2 16.2 16.2 18.0 8.4

 5 or More ...................................... 9.1 16.4 8.3 8.3 6.6 7.3 9.7 11.4

Full Bathrooms

 None or 1 ...................................... 58.5 24.4 36.1 56.5 64.9 69.5 77.5 3.8

 2 .................................................... 35.4 58.3 56.3 37.0 30.6 26.9 19.8 5.3

 3 or More ...................................... 6.1 17.3 7.7 6.5 4.5 3.6 2.8 15.8

Half Bathrooms

 None ............................................ 72.0 62.4 65.4 70.0 72.6 78.1 77.7 2.6

 1 .................................................... 26.1 36.6 32.5 27.9 25.8 20.3 20.2 6.5

 2 or More ...................................... Q Q Q Q Q Q Q NF

Number of Stories

 Single-Family Homes .................... 72.7 73.5 68.9 62.9 68.7 85.0 78.1 2.8

 1 Story ........................................ 40.5 36.6 32.9 38.8 50.3 64.3 32.0 5.1

 2 Stories ...................................... 26.5 32.7 28.6 17.4 13.6 17.7 40.2 7.4

 3 Stories ...................................... 3.2 Q 2.9 2.9 1.8 Q 5.4 19.3

 Split-Level ................................... 2.4 Q 4.4 3.7 2.9 2.0 Q 21.9

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

 Mobile Homes ............................... 6.2 13.5 9.5 10.7 6.4 1.4 0.6 17.4

Number of Floors in

Apartment Buildings

 1 or 2 Floors .................................. 10.7 7.2 13.4 13.9 13.4 7.7 8.2 12.5

 3 or 4 Floors .................................. 5.3 2.6 4.1 5.9 6.3 2.6 7.4 25.0

 5 to 10 Floors ................................ 2.0 Q Q 2.7 1.7 1.6 2.6 27.2

 11 to 20 Floors .............................. 0.8 Q Q Q 1.3 Q Q 36.2

 More than 20 Floors ...................... 0.2 Q Q Q Q Q Q 53.9

 Don’t Know/No Answer ................. 2.0 Q 2.5 2.5 1.7 Q 2.4 27.4

Foundation/Basement

of Single-Family Homes

(More than one may apply)

 Basement ...................................... 32.7 25.9 20.5 21.9 27.5 35.9 51.5 6.8

 Crawlspace ................................... 22.2 18.0 13.4 18.6 22.9 32.4 26.5 8.9

 Concrete Slab ............................... 22.6 31.7 36.4 27.5 24.0 20.9 7.6 8.2

 Not Asked (Mobile Homes

 and Multi-Family Units) ................. 27.3 26.5 31.1 37.1 31.3 15.0 21.9 7.6

Garage/Carport

 Yes ................................................ 53.7 63.4 56.6 51.2 53.7 61.7 46.5 3.7

 1-Car Garage .............................. 16.0 8.7 12.1 11.5 16.2 26.7 19.2 10.1

 2-Car Garage .............................. 29.2 41.2 37.5 31.9 28.0 25.0 20.5 6.4

 3-Car Garage .............................. 2.7 10.6 3.1 1.5 Q Q 2.4 15.9

 Covered Carport ......................... 6.3 3.2 4.2 7.3 9.1 10.0 5.0 14.2

 No ................................................. 25.2 23.6 21.8 22.3 21.4 24.6 32.1 7.3

 Not Asked (Apartments) ............... 21.1 12.9 21.6 26.4 24.9 13.6 21.4 9.5

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-2b. Housing Unit Characteristics by Year of Construction, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Year of Construction

RSE

Row

Factors

1990

 to

19971

1980

to

1989

1970

to

1979

1960

to

1969

1950

to

1959

1949

or

Before

0.5 1.7 1.2 1.0 1.1 1.1 0.8

Fuels Used For Any Use

(more than one often used)

 Electricity ...................................... 100.0 99.8 100.0 100.0 100.0 100.0 99.9 NE

 Natural Gas ................................... 61.0 53.8 43.5 48.4 66.5 73.1 74.9 4.2

 Wood ............................................ 14.8 16.7 21.2 17.4 14.9 10.9 10.2 9.2

 Fuel Oil ......................................... 9.8 3.1 3.4 5.3 10.7 12.1 17.8 14.3

 LPG ............................................... 8.0 9.1 6.7 8.7 7.6 5.8 9.0 14.1

 Kerosene ...................................... 3.4 1.9 2.9 3.8 2.7 2.2 4.9 18.2

 Solar ............................................ 0.7 Q Q 1.5 Q Q Q 37.9

Main Heating Fuel

 Natural Gas ................................... 52.7 48.3 36.0 41.3 57.7 64.5 64.7 4.8

 Electricity ...................................... 29.2 39.9 53.5 43.3 23.8 17.9 8.2 7.3

 Fuel Oil ......................................... 9.3 2.7 3.2 5.1 10.2 11.4 17.0 14.4

 LPG ............................................... 4.5 5.8 3.8 4.9 3.9 3.8 4.9 17.2

 Wood ............................................ 2.2 Q 2.1 2.5 2.4 1.3 2.5 22.4

 Kerosene ...................................... 1.0 Q 0.8 1.3 Q Q 1.2 30.5

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

 Other/None ................................... 1.1 Q Q 1.6 1.1 Q 1.4 34.4

1 New construction for 1997 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 Estimates provided by the household interview respondents, who were asked which category best described the total heated floorspace in the home. 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. 

• Percentages are calculated on unrounded numbers. • 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 1997 Residential Energy Consumption Survey.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-3b. Housing Unit Characteristics by Household Income, 

 Percent of U.S. Households, 1997

Housing Unit

Characteristics

RSE Column Factor:

Total

1997 Household Income

Below Poverty

Line

Eligible

for

Federal

Assistance1

RSE

Row

Factors

Less

than

$10,000

$10,000

to

$24,999

$25,000

to

$49,999

$50,000

or

More

0.6 1.4 1.0 0.9 1.1 1.3 1.0

Total ............................................... 100.0 100.0 100.0 100.0 100.0 100.0 100.0 0.0

Census Region and Division

 Northeast ...................................... 19.4 19.1 15.8 20.1 22.7 17.2 18.9 4.9

 New England .............................. 5.2 3.2 4.8 5.6 6.3 2.8 5.5 7.3

 Middle Atlantic ............................ 14.2 15.9 11.0 14.5 16.4 14.4 13.4 6.0

 Midwest ......................................... 23.7 18.5 22.3 25.7 25.4 19.7 21.0 4.7

 East North Central ...................... 16.7 13.5 15.6 17.8 17.9 14.5 15.4 5.2

 West North Central ..................... 7.0 5.0 6.7 7.9 7.5 5.2 5.6 10.6

 South ............................................ 35.4 42.2 37.4 32.5 33.2 38.7 36.3 3.7

 South Atlantic .............................. 18.4 20.7 18.1 17.7 18.5 19.6 18.7 6.3

 East South Central ...................... 6.3 9.0 6.9 6.2 4.3 7.9 6.6 6.7

 West South Central ..................... 10.7 12.5 12.3 8.6 10.4 11.2 11.0 8.8

 West .............................................. 21.5 20.2 24.5 21.7 18.7 24.4 23.7 5.5

 Mountain ..................................... 6.1 5.9 6.9 6.6 4.7 6.1 5.7 9.6

 Pacific ......................................... 15.4 14.3 17.5 15.1 14.1 18.3 18.1 7.1

Metropolitan Statistical Area

 Urban ............................................ 77.5 74.3 72.5 77.2 84.6 75.2 73.4 1.9

 Central City ................................. 36.2 45.5 39.0 35.7 29.6 44.8 41.6 5.7

 Suburban .................................... 41.3 28.8 33.5 41.5 55.0 30.5 31.8 5.8

 Rural ............................................. 22.5 25.7 27.5 22.8 15.4 24.8 26.6 6.2

Climate Zone2

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ................. 9.1 6.3 9.5 10.7 8.3 7.0 8.2 18.6

 5,500 to 7,000 HDD .................... 27.6 21.6 24.7 29.4 31.7 22.5 24.1 9.5

 4,000 to 5,499 HDD .................... 22.2 24.0 19.4 22.3 24.1 20.9 22.2 9.5

 Fewer than 4,000 HDD ............... 19.2 22.0 21.8 18.5 15.9 25.1 22.3 11.3

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................. 21.9 26.2 24.7 19.1 20.0 24.6 23.2 8.9

Estimated Heated Floorspace

Category (square feet)3

 Fewer than 600 ............................. 7.8 21.4 10.8 5.2 0.9 18.5 14.2 10.4

 600 to 999 .................................... 21.2 32.6 29.4 19.2 9.3 31.2 29.8 6.0

 1,000 to 1,599 .............................. 29.9 20.9 33.4 34.7 25.2 25.1 29.0 5.0

 1,600 to 1,999 .............................. 15.1 4.6 10.9 17.3 21.9 6.2 8.1 7.6

 2,000 to 2,399 .............................. 7.8 1.7 4.0 8.0 14.3 1.9 3.2 12.7

 2,400 to 2,999 .............................. 5.3 Q 1.1 4.5 12.3 1.3 1.4 17.1

 3,000 or More .............................. 4.1 Q 1.1 2.9 10.0 Q 1.1 19.1

 No Estimate Provided ................... 9.0 16.6 9.3 8.1 6.0 14.9 13.0 10.1

Ownership of Unit

 Owned .......................................... 67.5 38.5 60.4 70.2 85.5 38.7 50.2 2.8

 Rented .......................................... 32.5 61.5 39.6 29.8 14.5 61.3 49.8 4.2

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-3b. Housing Unit Characteristics by Household Income, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

1997 Household Income

Below Poverty

Line

Eligible

for

Federal

Assistance1

RSE

Row

Factors

Less

than

$10,000

$10,000

to

$24,999

$25,000

to

$49,999

$50,000

or

More

0.6 1.4 1.0 0.9 1.1 1.3 1.0

Type and Ownership of Housing

Unit

 Single-Family Detached ................ 62.9 38.3 53.1 65.5 81.8 41.8 47.9 3.0

 Owned ........................................ 54.8 27.7 43.9 57.3 76.5 27.8 36.8 3.6

 Rented ........................................ 8.0 10.7 9.2 8.2 5.4 13.9 11.1 8.7

 Single-Family Attached ................. 9.8 11.3 10.7 9.8 8.2 11.2 11.0 10.1

 Owned ........................................ 5.4 3.3 5.4 5.6 6.2 3.2 4.3 15.8

 Rented ........................................ 4.4 8.0 5.2 4.2 2.1 8.0 6.7 12.2

 Multifamily (2 to 4 units) ................ 5.5 11.3 7.3 4.3 2.3 10.2 8.8 12.4

 Owned ........................................ 0.9 Q 0.8 1.1 1.0 Q 0.8 30.1

 Rented ........................................ 4.6 10.8 6.5 3.2 1.3 9.7 7.9 14.1

 Multifamily (5 or more units) ......... 15.6 31.3 18.1 15.1 6.0 27.4 23.6 8.2

 Owned ........................................ 1.1 1.5 1.2 1.6 Q Q 1.4 27.1

 Rented ........................................ 14.4 29.7 16.9 13.5 5.5 26.9 22.1 8.3

 Mobile Home ................................. 6.2 7.8 10.8 5.4 1.6 9.5 8.8 13.0

 Owned ........................................ 5.2 5.5 9.1 4.7 1.4 6.6 6.9 14.2

 Rented ........................................ 1.1 2.3 1.7 0.7 Q 2.9 1.9 23.0

Year of Construction

 1939 or Before .............................. 18.5 24.0 20.0 18.5 14.2 23.6 22.5 7.4

 1940 to 1949 ................................. 9.1 10.7 11.3 8.7 6.3 10.7 11.8 8.9

 1950 to 1959 ................................. 12.4 13.0 14.0 12.5 10.2 14.1 13.8 6.8

 1960 to 1969 ................................. 14.2 13.5 15.1 15.4 12.4 15.3 13.7 7.4

 1970 to 1979 ................................. 19.3 18.8 17.7 20.2 20.1 18.2 18.0 6.3

 1980 to 1989 ................................. 17.1 13.5 15.3 15.2 22.7 12.3 13.8 8.5

 1990 to 19974 ............................... 9.6 6.5 6.6 9.6 14.1 5.8 6.4 12.1

Urban/Rural Location5

 City ................................................ 47.5 60.1 52.9 46.7 36.9 60.0 55.9 3.8

 Town ............................................. 17.9 20.4 19.6 17.0 16.1 19.5 20.8 8.6

 Suburbs ........................................ 18.3 6.4 11.4 18.7 30.7 7.1 8.7 9.0

 Rural or Open Country .................. 16.2 13.0 16.1 17.7 16.3 13.4 14.7 8.5

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ............................................. 3.0 10.0 4.4 1.3 Q 7.5 5.9 12.9

 3 ................................................... 9.0 21.9 11.6 7.5 2.0 16.8 14.6 9.1

 4 ................................................... 18.0 26.4 24.0 17.9 8.0 25.2 24.3 6.5

 5 ................................................... 20.9 20.6 25.9 22.6 14.1 23.1 24.4 5.3

 6 ................................................... 19.7 14.1 19.4 22.0 20.3 17.4 18.1 6.2

 7 ................................................... 14.0 3.9 9.2 16.5 21.2 6.3 7.2 8.1

 8 ................................................... 8.3 1.7 3.1 7.9 17.1 1.6 3.0 12.3

 9 or More ...................................... 6.9 Q 2.5 4.3 17.2 2.1 2.5 13.7

Bedrooms

 None or 1 ...................................... 13.0 32.9 16.6 9.7 3.4 24.8 21.4 7.6

 2 .................................................... 28.4 37.3 37.2 29.0 14.2 35.0 35.9 4.7

 3 .................................................... 40.4 23.0 36.7 44.4 48.0 30.5 32.5 4.1

 4 or More ...................................... 18.3 6.8 9.5 16.9 34.5 9.7 10.3 7.5

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-3b. Housing Unit Characteristics by Household Income, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

1997 Household Income

Below Poverty

Line

Eligible

for

Federal

Assistance1

RSE

Row

Factors

Less

than

$10,000

$10,000

to

$24,999

$25,000

to

$49,999

$50,000

or

More

0.6 1.4 1.0 0.9 1.1 1.3 1.0

Other Rooms

(Excluding Bathrooms)

 None or 1 ...................................... 5.0 13.0 7.1 3.2 0.9 10.2 8.6 11.3

 2 .................................................... 38.1 55.8 47.9 38.3 19.1 55.2 50.8 3.4

 3 .................................................... 30.5 23.6 30.8 33.1 30.7 26.9 29.3 4.8

 4 .................................................... 17.3 5.4 10.6 18.3 28.9 4.8 7.7 7.4

 5 or More ...................................... 9.1 2.2 3.6 7.1 20.4 2.9 3.5 12.5

Full Bathrooms

 None or 1 ...................................... 58.5 86.6 73.2 57.2 31.2 81.8 79.1 2.1

 2 .................................................... 35.4 12.0 25.0 38.6 53.9 16.2 19.1 4.8

 3 or More ...................................... 6.1 Q 1.7 4.2 14.9 2.1 1.7 17.3

Half Bathrooms

 None ............................................ 72.0 89.1 80.2 72.7 54.4 86.8 83.3 1.5

 1 .................................................... 26.1 10.1 19.0 25.5 42.0 12.5 15.8 5.7

 2 or More ...................................... Q Q Q Q Q Q Q NF

Number of Stories

 Single-Family Homes .................... 72.7 49.6 63.8 75.3 90.1 52.9 58.9 2.5

 1 Story ........................................ 40.5 37.4 43.5 42.6 36.4 38.4 39.9 4.3

 2 Stories ...................................... 26.5 10.5 17.5 28.1 41.9 13.0 16.7 6.5

 3 Stories ...................................... 3.2 Q 1.8 2.2 6.7 Q 1.8 16.4

 Split-Level ................................... 2.4 Q 0.9 2.4 4.9 Q Q 19.3

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

 Mobile Homes ............................... 6.2 7.8 10.8 5.4 1.6 9.5 8.8 13.0

Number of Floors in

Apartment Buildings

 1 or 2 Floors .................................. 10.7 21.0 14.6 9.7 3.0 18.8 17.1 10.1

 3 or 4 Floors .................................. 5.3 7.4 6.5 5.8 2.7 7.8 6.9 18.2

 5 to 10 Floors ................................ 2.0 5.7 1.9 1.5 1.0 4.8 3.5 20.1

 11 to 20 Floors .............................. 0.8 3.6 0.5 Q Q 2.6 1.7 31.0

 More than 20 Floors ...................... 0.2 Q Q Q Q Q Q 45.3

 Don’t Know/No Answer ................. 2.0 4.8 1.6 1.8 1.2 3.5 3.0 21.1

Foundation/Basement

of Single-Family Homes

(More than one may apply)

 Basement ...................................... 32.7 15.6 24.6 35.6 46.2 16.0 22.8 6.0

 Crawlspace ................................... 22.2 19.6 23.4 23.0 21.1 21.3 20.9 6.7

 Concrete Slab ............................... 22.6 16.1 19.4 21.3 30.5 17.9 18.0 7.0

 Not Asked (Mobile Homes

 and Multi-Family Units) ................. 27.3 50.4 36.2 24.7 9.9 47.1 41.1 5.3

Garage/Carport

 Yes ................................................ 53.7 24.6 42.5 56.3 76.3 25.2 34.0 3.6

 1-Car Garage .............................. 16.0 11.5 16.5 18.1 15.3 10.0 14.4 7.8

 2-Car Garage .............................. 29.2 7.9 17.7 30.2 50.3 10.0 12.7 6.7

 3-Car Garage .............................. 2.7 Q 1.0 2.2 6.1 Q 1.1 18.3

 Covered Carport ......................... 6.3 4.9 7.7 6.6 5.3 4.8 6.1 11.6

 No ................................................. 25.2 32.8 32.1 24.3 15.4 37.2 33.6 5.6

 Not Asked (Apartments) ............... 21.1 42.6 25.4 19.4 8.3 37.6 32.3 6.4

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-3b. Housing Unit Characteristics by Household Income, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

1997 Household Income

Below Poverty

Line

Eligible

for

Federal

Assistance1

RSE

Row

Factors

Less

than

$10,000

$10,000

to

$24,999

$25,000

to

$49,999

$50,000

or

More

0.6 1.4 1.0 0.9 1.1 1.3 1.0

Fuels Used For Any Use

(more than one often used)

 Electricity ...................................... 100.0 99.7 100.0 100.0 100.0 99.9 99.9 NE

 Natural Gas ................................... 61.0 60.0 58.4 60.9 64.3 62.4 59.9 3.4

 Wood ............................................ 14.8 5.2 10.2 15.0 24.1 7.4 8.8 8.8

 Fuel Oil ......................................... 9.8 9.7 8.6 10.1 10.7 9.5 10.0 10.5

 LPG ............................................... 8.0 7.8 8.4 8.6 6.9 7.9 8.2 12.5

 Kerosene ...................................... 3.4 3.0 4.3 3.8 2.3 4.3 4.1 14.2

 Solar ............................................ 0.7 Q Q 0.6 1.2 Q Q 38.5

Main Heating Fuel

 Natural Gas ................................... 52.7 46.8 50.6 53.4 56.9 49.0 49.2 4.0

 Electricity ...................................... 29.2 33.2 31.1 27.2 27.4 30.1 30.6 5.9

 Fuel Oil ......................................... 9.3 9.5 8.2 9.8 9.9 9.1 9.6 10.6

 LPG ............................................... 4.5 4.5 5.0 5.6 2.8 4.8 4.8 14.9

 Wood ............................................ 2.2 2.1 2.6 2.0 1.8 2.1 2.4 18.2

 Kerosene ...................................... 1.0 1.7 1.2 1.1 Q 2.0 1.3 23.9

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

 Other/None ................................... 1.1 2.3 1.3 0.8 0.8 3.1 2.1 24.9

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 Estimates provided by the household interview respondents, who were asked which category best described the total heated floorspace in the home. 4 New construction for 1997 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.

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. 

• Percentages are calculated on unrounded numbers. • 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 1997 Residential Energy Consumption Survey.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-4b. Housing Unit Characteristics by Type of Housing Unit, 

 Percent of U.S. Households, 1997

Housing Unit

Characteristics

RSE Column Factor:

Total

Type of Housing Unit

RSE

Row

Factors

Single-Family 

Multifamily

Two to Four Units Five or More Units Mobile Home

0.5 0.5 1.6 1.2 1.7

Total ............................................... 100.0 100.0 100.0 100.0 100.0 0.0

Census Region and Division

 Northeast ...................................... 19.4 18.6 30.1 24.1 7.7 7.8

 New England .............................. 5.2 5.1 12.5 4.6 1.8 15.4

 Middle Atlantic ............................ 14.2 13.5 17.6 19.5 5.9 9.2

 Midwest ......................................... 23.7 25.0 30.3 17.7 17.5 7.7

 East North Central ...................... 16.7 17.0 25.8 13.7 11.9 8.5

 West North Central ..................... 7.0 8.0 4.5 4.1 5.6 17.5

 South ............................................ 35.4 36.1 25.2 30.5 47.3 6.3

 South Atlantic .............................. 18.4 18.5 12.1 18.3 23.6 10.6

 East South Central ...................... 6.3 6.5 6.1 2.7 12.5 14.6

 West South Central ..................... 10.7 11.2 7.1 9.5 11.2 10.0

 West .............................................. 21.5 20.2 14.4 27.7 27.6 8.3

 Mountain ..................................... 6.1 6.1 3.5 5.3 10.5 15.8

 Pacific ......................................... 15.4 14.1 10.9 22.4 17.1 10.7

Metropolitan Statistical Area

 Urban ............................................ 77.5 75.6 80.1 93.5 56.6 2.2

 Central City ................................. 36.2 32.2 53.6 55.6 19.5 7.9

 Suburban .................................... 41.3 43.4 26.5 38.0 37.2 7.9

 Rural ............................................. 22.5 24.4 19.9 6.5 43.4 8.1

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ................. 9.1 10.5 8.5 3.7 7.2 25.4

 5,500 to 7,000 HDD .................... 27.6 27.7 39.5 25.4 21.4 11.9

 4,000 to 5,499 HDD .................... 22.2 21.4 23.1 27.3 17.3 13.2

 Fewer than 4,000 HDD ............... 19.2 18.6 15.0 21.9 23.2 13.7

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................. 21.9 21.7 14.0 21.6 30.9 12.1

Estimated Heated Floorspace

Category (square feet)2

 Fewer than 600 ............................. 7.8 2.6 23.6 23.4 14.4 10.2

 600 to 999 .................................... 21.2 12.9 40.4 45.4 40.3 5.5

 1,000 to 1,599 .............................. 29.9 34.0 15.3 16.5 29.1 7.2

 1,600 to 1,999 .............................. 15.1 19.5 Q 2.2 6.6 9.6

 2,000 to 2,399 .............................. 7.8 10.4 Q Q Q 10.0

 2,400 to 2,999 .............................. 5.3 7.1 Q Q Q 13.6

 3,000 or More .............................. 4.1 5.5 Q Q Q 19.6

 No Estimate Provided ................... 9.0 8.0 16.5 11.7 7.0 12.3

Year of Construction

 1939 or Before .............................. 18.5 19.6 31.5 14.9 Q 9.3

 1940 to 1949 ................................. 9.1 9.9 13.3 6.9 Q 10.7

 1950 to 1959 ................................. 12.4 14.5 7.4 8.2 2.7 10.9

 1960 to 1969 ................................. 14.2 13.5 15.7 17.2 14.7 9.1

 1970 to 1979 ................................. 19.3 16.7 16.6 26.8 33.2 7.1

 1980 to 1989 ................................. 17.1 16.2 12.7 19.1 26.1 10.1

 1990 to 19973 ............................... 9.6 9.7 Q 7.0 20.8 15.2

Urban/Rural Location4

 City ................................................ 47.5 42.5 68.6 71.0 28.6 5.0

 Town ............................................. 17.9 18.8 20.9 14.0 15.8 11.4

 Suburbs ........................................ 18.3 20.9 8.0 12.7 11.6 12.0

 Rural or Open Country .................. 16.2 17.8 2.5 2.4 44.0 12.3

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-4b. Housing Unit Characteristics by Type of Housing Unit, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Type of Housing Unit

RSE

Row

Factors

Single-Family 

Multifamily

Two to Four Units Five or More Units Mobile Home

0.5 0.5 1.6 1.2 1.7

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ............................................. 3.0 0.6 5.6 13.4 3.1 18.6

 3 ................................................... 9.0 2.2 28.1 35.5 6.0 9.3

 4 ................................................... 18.0 10.6 34.9 36.8 42.9 6.1

 5 ................................................... 20.9 22.2 18.6 11.1 33.1 6.7

 6 ................................................... 19.7 25.0 8.8 2.9 9.5 9.6

 7 ................................................... 14.0 18.7 Q Q 3.8 9.6

 8 ................................................... 8.3 11.2 Q Q Q 10.8

 9 or More ...................................... 6.9 9.4 Q Q Q 11.9

Bedrooms

 None or 1 ...................................... 13.0 3.5 37.3 51.2 5.8 8.3

 2 .................................................... 28.4 22.3 45.1 42.4 49.4 4.8

 3 .................................................... 40.4 49.9 13.5 5.3 40.4 6.2

 4 or More ...................................... 18.3 24.2 4.1 1.1 4.4 14.2

Other Rooms

(Excluding Bathrooms)

 None or 1 ...................................... 5.0 1.9 7.2 16.0 11.5 12.4

 2 .................................................... 38.1 26.9 64.7 69.0 67.0 3.2

 3 .................................................... 30.5 35.9 22.8 13.4 17.8 7.0

 4 .................................................... 17.3 22.9 4.8 1.5 2.7 13.6

 5 or More ...................................... 9.1 12.4 Q Q Q 10.2

Full Bathrooms

 None or 1 ...................................... 58.5 50.6 90.3 85.2 55.5 2.6

 2 .................................................... 35.4 41.1 9.7 14.7 44.2 6.9

 3 or More ...................................... 6.1 8.3 Q Q Q 16.0

Half Bathrooms

 None ............................................ 72.0 65.4 91.5 88.6 89.7 1.6

 1 .................................................... 26.1 32.0 8.5 11.4 10.3 8.7

 2 or More ...................................... Q Q Q Q Q NF

Number of Stories

 Single-Family Homes .................... 72.7 100.0 -- -- -- 2.6

 1 Story ........................................ 40.5 55.7 -- -- -- 4.7

 2 Stories ...................................... 26.5 36.5 -- -- -- 6.4

 3 Stories ...................................... 3.2 4.4 -- -- -- 17.0

 Split-Level ................................... 2.4 3.3 -- -- -- 21.7

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

 Mobile Homes ............................... 6.2 Q -- -- 100.0 16.0

Number of Floors in

Apartment Buildings

 1 or 2 Floors .................................. 10.7 -- 72.1 43.3 -- 6.4

 3 or 4 Floors .................................. 5.3 -- 12.8 29.7 -- 15.7

 5 to 10 Floors ................................ 2.0 -- Q 12.9 -- 14.2

 11 to 20 Floors .............................. 0.8 -- Q 5.2 -- 27.0

 More than 20 Floors ...................... 0.2 -- Q 1.2 -- 35.7

 Don’t Know/No Answer ................. 2.0 -- 14.7 7.6 -- 17.2

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-4b. Housing Unit Characteristics by Type of Housing Unit, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Type of Housing Unit

RSE

Row

Factors

Single-Family 

Multifamily

Two to Four Units Five or More Units Mobile Home

0.5 0.5 1.6 1.2 1.7

Foundation/Basement

of Single-Family Homes

(More than one may apply)

 Basement ...................................... 32.7 45.0 -- -- -- 6.5

 Crawlspace ................................... 22.2 30.5 -- -- -- 8.5

 Concrete Slab ............................... 22.6 31.2 -- -- -- 7.9

 Not Asked (Mobile Homes

 and Multi-Family Units) ................. 27.3 -- 100.0 100.0 100.0 7.0

Garage/Carport

 Yes ................................................ 53.7 71.7 -- -- 25.1 4.3

 1-Car Garage .............................. 16.0 21.7 -- -- 4.1 10.7

 2-Car Garage .............................. 29.2 39.8 -- -- 4.7 8.8

 3-Car Garage .............................. 2.7 3.7 -- -- Q 16.6

 Covered Carport ......................... 6.3 7.4 -- -- 16.0 12.5

 No ................................................. 25.2 28.3 -- -- 74.9 5.2

 Not Asked (Apartments) ............... 21.1 Q 100.0 100.0 Q 8.4

Fuels Used For Any Use

(more than one often used)

 Electricity ...................................... 100.0 100.0 100.0 99.9 100.0 NE

 Natural Gas ................................... 61.0 63.7 68.2 55.5 36.7 4.9

 Wood ............................................ 14.8 19.0 Q 1.4 10.6 12.1

 Fuel Oil ......................................... 9.8 10.2 8.5 11.6 Q 14.0

 LPG ............................................... 8.0 8.4 Q Q 27.0 14.0

 Kerosene ...................................... 3.4 3.7 Q Q 9.2 14.5

 Solar ............................................ 0.7 0.9 Q Q Q 48.7

Main Heating Fuel

 Natural Gas ................................... 52.7 57.6 61.3 34.6 33.3 6.0

 Electricity ...................................... 29.2 24.0 28.9 49.9 37.3 7.3

 Fuel Oil ......................................... 9.3 9.6 8.1 11.3 Q 14.1

 LPG ............................................... 4.5 4.8 Q Q 15.7 16.5

 Wood ............................................ 2.2 2.6 Q Q 4.3 20.3

 Kerosene ...................................... 1.0 0.7 Q Q 5.9 25.4

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

 Other/None ................................... 1.1 0.7 Q 3.4 Q 31.4

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 Estimates provided by the household interview respondents, who were asked which category best described the total heated floorspace in the home. 3 New construction for 1997 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. 

• Percentages are calculated on unrounded numbers. • 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 1997 Residential Energy Consumption Survey.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-5b. Housing Unit Characteristics by Type of Owner-Occupied Housing Unit,

 Percent of U.S. Households, 1997

Housing Unit

Characteristics

RSE Column Factor:

Total

OwnerOccupied

Units

Type of Owner-Occupied Housing Unit

RSE

Row

Factors

Single-Family 

Multifamily

Two to Four Units Five or More Units Mobile Home

0.4 0.4 1.9 2.0 1.3

Total ............................................... 100.0 100.0 100.0 100.0 100.0 0.0

Census Region and Division

 Northeast ...................................... 18.6 19.3 36.2 25.8 6.7 11.6

 New England .............................. 5.3 5.4 13.8 Q Q 18.2

 Middle Atlantic ............................ 13.3 13.8 22.4 18.4 5.1 13.3

 Midwest ......................................... 25.3 25.8 44.2 Q 18.5 9.6

 East North Central ...................... 17.3 17.5 36.6 Q 12.7 11.4

 West North Central ..................... 8.0 8.3 Q Q 5.9 20.1

 South ............................................ 37.0 36.7 Q 31.0 46.8 7.2

 South Atlantic .............................. 18.9 18.9 Q 19.0 20.6 12.2

 East South Central ...................... 7.2 6.8 Q Q 13.1 10.8

 West South Central ..................... 10.9 10.9 Q Q 13.1 10.9

 West .............................................. 19.1 18.3 Q 32.0 27.9 11.0

 Mountain ..................................... 6.1 5.8 Q Q 10.4 17.9

 Pacific ......................................... 12.9 12.5 Q 25.5 17.5 14.0

Metropolitan Statistical Area

 Urban ............................................ 74.4 75.4 79.5 86.4 59.7 3.8

 Central City ................................. 30.1 30.3 51.1 44.0 21.0 13.5

 Suburban .................................... 44.3 45.1 28.4 42.4 38.7 11.5

 Rural ............................................. 25.6 24.6 20.5 13.6 40.3 12.0

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ................. 10.3 10.7 Q Q 6.9 35.2

 5,500 to 7,000 HDD .................... 28.2 28.4 56.8 26.4 21.2 16.9

 4,000 to 5,499 HDD .................... 21.6 21.7 23.4 34.4 17.6 18.7

 Fewer than 4,000 HDD ............... 17.6 17.4 Q Q 23.5 24.4

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................. 22.3 21.7 Q 26.2 30.9 17.6

Estimated Heated Floorspace

Category (square feet)2

 Fewer than 600 ............................. 2.4 1.2 Q Q 12.7 26.6

 600 to 999 .................................... 12.5 9.5 33.1 36.2 38.3 11.7

 1,000 to 1,599 .............................. 33.5 33.8 25.4 30.1 32.2 9.1

 1,600 to 1,999 .............................. 19.8 21.3 Q Q 7.3 10.6

 2,000 to 2,399 .............................. 10.7 11.7 Q Q Q 12.9

 2,400 to 2,999 .............................. 7.5 8.3 Q Q Q 16.7

 3,000 or More .............................. 6.0 6.6 Q Q Q 23.7

 No Estimate Provided ................... 7.6 7.5 Q Q 6.5 17.8

Year of Construction

 1939 or Before .............................. 17.8 19.1 49.1 Q Q 10.8

 1940 to 1949 ................................. 8.4 9.2 Q Q Q 16.5

 1950 to 1959 ................................. 13.0 14.2 Q Q Q 13.5

 1960 to 1969 ................................. 13.4 13.3 Q 19.6 14.6 13.5

 1970 to 1979 ................................. 18.7 16.9 23.9 48.4 31.9 11.1

 1980 to 1989 ................................. 17.5 17.0 Q Q 27.1 12.2

 1990 to 19973 ............................... 11.1 10.3 Q Q 23.6 17.3

Urban/Rural Location4

 City ................................................ 40.1 40.1 66.9 68.3 28.9 8.2

 Town ............................................. 18.2 18.6 19.9 Q 15.4 17.0

 Suburbs ........................................ 21.4 22.2 Q 20.9 13.1 13.7

 Rural or Open Country .................. 20.3 19.0 Q Q 42.6 11.0

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-5b. Housing Unit Characteristics by Type of Owner-Occupied Housing Unit,

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

OwnerOccupied

Units

Type of Owner-Occupied Housing Unit

RSE

Row

Factors

Single-Family 

Multifamily

Two to Four Units Five or More Units Mobile Home

0.4 0.4 1.9 2.0 1.3

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ............................................. 0.4 Q Q Q 2.7 48.7

 3 ................................................... 1.8 0.9 Q 24.6 5.5 23.7

 4 ................................................... 10.9 7.3 38.3 46.4 39.5 9.9

 5 ................................................... 21.9 20.9 25.0 15.1 35.1 9.9

 6 ................................................... 24.4 26.1 Q Q 10.8 9.7

 7 ................................................... 19.1 20.8 Q Q 4.5 11.8

 8 ................................................... 11.6 12.9 Q Q Q 12.9

 9 or More ...................................... 9.9 10.9 Q Q Q 15.4

Bedrooms

 None or 1 ...................................... 2.9 1.8 Q 38.1 5.8 19.7

 2 .................................................... 21.5 18.3 49.9 54.0 46.9 7.7

 3 .................................................... 50.8 52.8 23.9 Q 42.1 6.8

 4 or More ...................................... 24.8 27.1 Q Q 5.3 11.4

Other Rooms

(Excluding Bathrooms)

 None or 1 ...................................... 1.8 1.1 Q Q 9.2 27.5

 2 .................................................... 27.0 22.5 55.8 60.2 66.3 6.4

 3 .................................................... 34.9 36.5 24.5 29.3 20.0 10.5

 4 .................................................... 23.4 25.6 Q Q 3.3 12.6

 5 or More ...................................... 12.9 14.3 Q Q Q 12.8

Full Bathrooms

 None or 1 ...................................... 46.3 45.3 70.2 64.9 49.9 5.7

 2 .................................................... 45.0 45.0 29.8 33.7 49.7 7.7

 3 or More ...................................... 8.7 9.7 Q Q Q 20.3

Half Bathrooms

 None ............................................ 65.3 62.4 85.5 87.3 90.6 2.9

 1 .................................................... 32.1 34.7 Q Q 9.4 9.1

 2 or More ...................................... Q Q Q Q Q NF

Number of Stories

 Single-Family Homes .................... 89.3 100.0 -- -- -- NE

 1 Story ........................................ 48.6 54.4 -- -- -- 6.0

 2 Stories ...................................... 33.4 37.4 -- -- -- 8.4

 3 Stories ...................................... 4.0 4.4 -- -- -- 25.1

 Split-Level ................................... 3.3 3.6 -- -- -- 27.5

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

 Mobile Homes ............................... 7.7 Q -- -- 100.0 21.8

Number of Floors in

Apartment Buildings

 1 or 2 Floors .................................. 1.3 -- 55.8 29.5 -- 15.9

 3 or 4 Floors .................................. 0.7 -- Q 34.7 -- 33.7

 5 to 10 Floors ................................ 0.3 -- Q 18.0 -- 25.9

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

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

 Don’t Know/No Answer ................. 0.6 -- 34.6 Q -- 20.7

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-5b. Housing Unit Characteristics by Type of Owner-Occupied Housing Unit,

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

OwnerOccupied

Units

Type of Owner-Occupied Housing Unit

RSE

Row

Factors

Single-Family 

Multifamily

Two to Four Units Five or More Units Mobile Home

0.4 0.4 1.9 2.0 1.3

Foundation/Basement

of Single-Family Homes

(More than one may apply)

 Basement ...................................... 42.2 47.3 -- -- -- 8.0

 Crawlspace ................................... 26.6 29.7 -- -- -- 10.4

 Concrete Slab ............................... 27.0 30.2 -- -- -- 10.9

 Not Asked (Mobile Homes

 and Multi-Family Units) ................. 10.7 -- 100.0 100.0 100.0 18.1

Garage/Carport

 Yes ................................................ 70.8 76.9 -- -- 27.7 5.3

 1-Car Garage .............................. 19.7 21.7 -- -- 4.4 14.0

 2-Car Garage .............................. 39.9 44.3 -- -- 5.0 11.3

 3-Car Garage .............................. 4.0 4.4 -- -- Q 19.3

 Covered Carport ......................... 8.0 7.5 -- -- 18.2 16.6

 No ................................................. 26.2 23.1 -- -- 72.3 8.0

 Not Asked (Apartments) ............... 3.0 -- 100.0 100.0 -- 38.8

Fuels Used For Any Use

(more than one often used)

 Electricity ...................................... 100.0 100.0 100.0 100.0 100.0 NE

 Natural Gas ................................... 61.2 62.9 85.5 53.8 38.8 6.6

 Wood ............................................ 19.2 20.4 Q Q 12.0 11.5

 Fuel Oil ......................................... 10.2 10.9 Q 15.7 Q 18.2

 LPG ............................................... 9.8 8.8 Q Q 25.3 17.9

 Kerosene ...................................... 3.9 3.7 Q Q 8.3 19.8

 Solar ............................................ 0.9 1.0 Q Q Q 62.9

Main Heating Fuel

 Natural Gas ................................... 55.2 57.0 81.9 29.7 35.1 8.0

 Electricity ...................................... 25.3 23.9 Q 49.7 38.5 10.4

 Fuel Oil ......................................... 9.6 10.3 Q 15.7 Q 17.8

 LPG ............................................... 5.4 4.8 Q Q 15.0 21.7

 Wood ............................................ 2.7 2.6 Q Q 4.5 28.3

 Kerosene ...................................... 1.0 0.6 Q Q 5.3 38.3

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

 Other/None ................................... 0.7 0.7 Q Q Q NF

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 Estimates provided by the household interview respondents, who were asked which category best described the total heated floorspace in the home. 3 New construction for 1997 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. 

• Percentages are calculated on unrounded numbers. • 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 1997 Residential Energy Consumption Survey.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-6b. Housing Unit Characteristics by Type of Rented Housing Unit, 

 Percent of U.S. Households, 1997

Housing Unit

Characteristics

RSE Column Factor:

Total

Rented

Units

Type of Rented Housing Unit

RSE

Row

Factors

Single-Family 

Multifamily

Two to Four Units Five or More Units Mobile Home

0.6 0.7 1.3 0.9 2.0

Total ............................................... 100.0 100.0 100.0 100.0 100.0 0.0

Census Region and Division

 Northeast ...................................... 21.1 15.7 28.9 23.9 Q 10.1

 New England .............................. 5.1 3.5 12.3 4.4 Q 21.5

 Middle Atlantic ............................ 16.0 12.2 16.6 19.5 Q 11.8

 Midwest ......................................... 20.5 21.2 27.6 18.3 12.1 14.2

 East North Central ...................... 15.4 14.4 23.7 14.0 Q 14.3

 West North Central ..................... 5.1 6.7 3.9 4.3 Q 31.8

 South ............................................ 31.8 33.6 27.5 30.4 49.6 9.2

 South Atlantic .............................. 17.4 16.3 12.7 18.2 38.2 13.9

 East South Central ...................... 4.2 5.0 6.6 2.4 Q 25.4

 West South Central ..................... 10.3 12.3 8.2 9.8 Q 15.8

 West .............................................. 26.5 29.5 16.0 27.3 26.1 10.9

 Mountain ..................................... 6.0 7.5 3.4 5.2 Q 23.1

 Pacific ......................................... 20.5 22.0 12.6 22.1 15.1 13.8

Metropolitan Statistical Area

 Urban ............................................ 83.9 77.0 80.3 94.1 41.6 3.4

 Central City ................................. 49.0 41.6 54.1 56.5 11.8 9.5

 Suburban .................................... 34.9 35.4 26.2 37.6 29.8 11.7

 Rural ............................................. 16.1 23.0 19.7 5.9 58.4 12.8

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ................. 6.8 9.3 8.6 3.8 Q 30.8

 5,500 to 7,000 HDD .................... 26.4 24.3 36.0 25.3 22.3 14.2

 4,000 to 5,499 HDD .................... 23.3 20.0 23.0 26.7 16.0 15.0

 Fewer than 4,000 HDD ............... 22.6 24.6 17.2 22.8 21.8 13.5

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................. 20.9 21.8 15.2 21.3 31.1 13.6

Estimated Heated Floorspace

Category (square feet)2

 Fewer than 600 ............................. 18.8 9.5 26.3 24.1 22.7 10.9

 600 to 999 .................................... 39.2 29.4 41.9 46.1 49.9 6.1

 1,000 to 1,599 .............................. 22.5 34.7 13.3 15.5 14.0 12.3

 1,600 to 1,999 .............................. 5.2 10.8 Q 1.9 Q 18.4

 2,000 to 2,399 .............................. 1.7 4.0 Q Q Q 28.7

 2,400 to 2,999 .............................. 0.7 1.3 Q Q Q 47.6

 3,000 or More .............................. Q Q Q Q Q NF

 No Estimate Provided ................... 12.0 10.3 16.7 12.1 Q 15.8

Year of Construction

 1939 or Before .............................. 19.8 22.4 28.0 15.7 Q 12.2

 1940 to 1949 ................................. 10.3 13.4 13.9 7.1 Q 14.0

 1950 to 1959 ................................. 11.1 15.8 8.4 8.3 Q 12.9

 1960 to 1969 ................................. 15.9 14.0 17.6 17.0 15.4 12.8

 1970 to 1979 ................................. 20.5 15.5 15.2 25.1 39.4 10.9

 1980 to 1989 ................................. 16.1 12.3 13.5 19.9 21.4 15.4

 1990 to 19973 ............................... 6.3 6.6 Q 6.9 Q 28.1

Urban/Rural Location4

 City ................................................ 62.9 54.2 69.0 71.2 27.2 6.1

 Town ............................................. 17.4 19.6 21.1 14.4 17.6 14.4

 Suburbs ........................................ 12.0 14.2 7.4 12.0 Q 19.6

 Rural or Open Country .................. 7.7 12.0 2.6 2.4 50.9 18.3

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-6b. Housing Unit Characteristics by Type of Rented Housing Unit, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Rented

Units

Type of Rented Housing Unit

RSE

Row

Factors

Single-Family 

Multifamily

Two to Four Units Five or More Units Mobile Home

0.6 0.7 1.3 0.9 2.0

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ............................................. 8.4 2.6 6.7 14.1 Q 19.1

 3 ................................................... 24.1 8.1 32.4 36.4 Q 9.5

 4 ................................................... 32.9 26.6 34.3 36.0 59.6 7.3

 5 ................................................... 18.9 28.7 17.3 10.8 23.2 10.6

 6 ................................................... 9.9 19.8 8.1 2.5 Q 15.6

 7 ................................................... 3.6 8.8 Q Q Q 18.0

 8 ................................................... 1.3 3.3 Q Q Q 32.4

 9 or More ...................................... 0.8 2.0 Q Q Q 39.7

Bedrooms

 None or 1 ...................................... 33.9 11.7 42.3 52.3 Q 7.2

 2 .................................................... 42.7 41.9 44.1 41.5 62.0 6.0

 3 .................................................... 18.7 36.0 11.5 5.2 32.0 11.5

 4 or More ...................................... 4.8 10.4 Q Q Q 18.9

Other Rooms

(Excluding Bathrooms)

 None or 1 ...................................... 11.5 5.5 8.6 16.7 22.7 14.8

 2 .................................................... 61.0 48.2 66.5 69.7 70.4 3.8

 3 .................................................... 21.4 33.0 22.5 12.2 Q 10.5

 4 .................................................... 4.8 9.9 Q 1.4 Q 23.6

 5 or More ...................................... 1.3 3.3 Q Q Q 32.8

Full Bathrooms

 None or 1 ...................................... 83.8 76.4 94.3 86.8 83.1 2.3

 2 .................................................... 15.6 21.9 5.7 13.2 16.9 14.9

 3 or More ...................................... 0.6 1.7 Q Q Q 46.2

Half Bathrooms

 None ............................................ 85.7 79.6 92.7 88.7 85.4 2.3

 1 .................................................... 13.7 18.9 7.3 11.3 14.6 15.2

 2 or More ...................................... Q Q Q Q Q NF

Number of Stories

 Single-Family Homes .................... 38.2 100.0 -- -- -- 7.2

 1 Story ........................................ 23.7 62.0 -- -- -- 6.7

 2 Stories ...................................... 12.4 32.4 -- -- -- 10.1

 3 Stories ...................................... 1.5 4.0 -- -- -- 29.6

 Split-Level ................................... 0.5 1.4 -- -- -- 69.7

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

 Mobile Homes ............................... 3.2 Q -- -- 100.0 25.4

Number of Floors in

Apartment Buildings

 1 or 2 Floors .................................. 30.4 -- 75.4 44.4 -- 7.0

 3 or 4 Floors .................................. 14.9 -- 13.5 29.4 -- 17.7

 5 to 10 Floors ................................ 5.6 -- Q 12.5 -- 16.2

 11 to 20 Floors .............................. 2.2 -- Q 5.0 -- 30.8

 More than 20 Floors ...................... 0.6 -- Q 1.3 -- 39.4

 Don’t Know/No Answer ................. 4.8 -- 10.8 7.3 -- 25.2

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-6b. Housing Unit Characteristics by Type of Rented Housing Unit, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Rented

Units

Type of Rented Housing Unit

RSE

Row

Factors

Single-Family 

Multifamily

Two to Four Units Five or More Units Mobile Home

0.6 0.7 1.3 0.9 2.0

Foundation/Basement

of Single-Family Homes

(More than one may apply)

 Basement ...................................... 13.0 34.0 -- -- -- 9.9

 Crawlspace ................................... 13.1 34.2 -- -- -- 12.3

 Concrete Slab ............................... 13.6 35.6 -- -- -- 10.0

 Not Asked (Mobile Homes

 and Multi-Family Units) ................. 61.8 -- 100.0 100.0 100.0 4.5

Garage/Carport

 Yes ................................................ 18.2 46.6 -- -- 12.5 9.6

 1-Car Garage .............................. 8.4 21.7 -- -- Q 14.9

 2-Car Garage .............................. 7.1 18.2 -- -- Q 14.7

 3-Car Garage .............................. Q Q -- -- Q NF

 Covered Carport ......................... 2.8 6.9 -- -- Q 23.0

 No ................................................. 23.2 53.4 -- -- 87.5 4.6

 Not Asked (Apartments) ............... 58.6 -- 100.0 100.0 -- 4.6

Fuels Used For Any Use

(more than one often used)

 Electricity ...................................... 99.9 100.0 100.0 99.9 100.0 NE

 Natural Gas ................................... 60.6 67.7 64.8 55.7 26.4 7.0

 Wood ............................................ 5.6 12.1 Q 1.5 Q 21.5

 Fuel Oil ......................................... 9.1 6.7 8.8 11.3 Q 17.8

 LPG ............................................... 4.1 6.4 Q Q 35.1 19.3

 Kerosene ...................................... 2.4 3.9 Q Q 13.6 27.1

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

Main Heating Fuel

 Natural Gas ................................... 47.5 60.2 57.2 35.0 24.8 8.5

 Electricity ...................................... 37.2 24.8 32.4 49.9 31.4 9.5

 Fuel Oil ......................................... 8.6 6.2 8.3 11.0 Q 18.3

 LPG ............................................... 2.6 4.5 Q Q 19.1 22.8

 Wood ............................................ 1.1 2.4 Q Q Q 32.9

 Kerosene ...................................... 0.9 1.1 Q Q Q 56.3

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

 Other/None ................................... 2.0 0.8 Q 3.4 Q NF

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 Estimates provided by the household interview respondents, who were asked which category best described the total heated floorspace in the home. 3 New construction for 1997 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. 

• Percentages are calculated on unrounded numbers. • 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 1997 Residential Energy Consumption Survey.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-7b. Housing Unit Characteristics by Four Most Populated States, 

 Percent of U.S. Households, 1997

Housing Unit

Characteristics

RSE Column Factor:

Total

Four Most Populated States

RSE

Row

Factors

New York California Texas Florida

0.4 1.1 1.1 1.2 1.6

Total .............................................................. 100.0 100.0 100.0 100.0 100.0 0.0

Census Region and Division

 Northeast ..................................................... 19.4 100.0 -- -- -- NF

 New England ............................................. 5.2 Q -- -- -- NF

 Middle Atlantic ........................................... 14.2 100.0 -- -- -- NF

 Midwest ....................................................... 23.7 -- -- -- -- NF

 East North Central ..................................... 16.7 -- -- -- -- NF

 West North Central .................................... 7.0 -- -- -- -- NF

 South ........................................................... 35.4 -- -- 100.0 100.0 NF

 South Atlantic ............................................ 18.4 -- -- Q 100.0 NF

 East South Central .................................... 6.3 -- -- Q Q NF

 West South Central ................................... 10.7 -- -- 100.0 Q NF

 West ............................................................ 21.5 -- 100.0 -- -- NF

 Mountain .................................................... 6.1 -- Q -- -- NF

 Pacific ........................................................ 15.4 -- 100.0 -- -- NF

Metropolitan Statistical Area

 Urban ........................................................... 77.5 91.4 95.5 83.2 91.7 1.2

 Central City ................................................ 36.2 50.4 39.2 45.6 43.0 10.7

 Suburban ................................................... 41.3 41.1 56.3 37.6 48.7 10.1

 Rural ............................................................ 22.5 8.6 4.5 16.8 8.3 10.5

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ............................... 9.1 7.7 Q Q Q 20.3

 5,500 to 7,000 HDD ................................... 27.6 35.6 Q Q Q 11.2

 4,000 to 5,499 HDD ................................... 22.2 56.7 5.1 Q Q 9.1

 Fewer than 4,000 HDD .............................. 19.2 Q 86.2 Q Q 4.9

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................................ 21.9 Q 8.6 92.3 100.0 10.1

Estimated Heated Floorspace Category

(square feet)2

 Fewer than 600 ........................................... 7.8 12.9 12.4 6.7 4.3 14.4

 600 to 999 .................................................. 21.2 23.7 23.4 20.3 13.8 9.8

 1,000 to 1,599 ............................................ 29.9 24.7 26.5 28.8 42.8 7.0

 1,600 to 1,999 ............................................ 15.1 10.0 13.4 15.4 15.1 11.9

 2,000 to 2,399 ............................................ 7.8 6.4 8.4 9.4 7.0 16.0

 2,400 to 2,999 ............................................ 5.3 4.1 5.1 5.9 5.3 19.3

 3,000 or More ............................................. 4.1 3.1 2.2 Q 5.4 28.1

 No Estimate Provided .................................. 9.0 15.0 8.6 6.2 6.4 18.2

Ownership of Unit

 Owned ......................................................... 67.5 55.3 54.1 63.9 74.8 4.1

 Rented ......................................................... 32.5 44.7 45.9 36.1 25.2 7.1

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-7b. Housing Unit Characteristics by Four Most Populated States, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Four Most Populated States

RSE

Row

Factors

New York California Texas Florida

0.4 1.1 1.1 1.2 1.6

Type and Ownership of Housing Unit

 Single-Family Detached .............................. 62.9 43.6 56.9 71.7 62.8 4.3

 Owned ....................................................... 54.8 40.9 44.9 58.9 56.9 4.8

 Rented ....................................................... 8.0 2.7 12.0 12.8 5.9 16.2

 Single-Family Attached ............................... 9.8 12.7 11.2 3.2 14.3 21.8

 Owned ....................................................... 5.4 7.7 4.3 Q 11.6 25.1

 Rented ....................................................... 4.4 5.0 6.8 2.3 Q 25.4

 Multifamily (2 to 4 units) .............................. 5.5 7.3 4.4 3.8 Q 24.5

 Owned ....................................................... 0.9 2.1 Q Q Q 40.8

 Rented ....................................................... 4.6 5.2 4.2 3.8 Q 23.5

 Multifamily (5 or more units) ........................ 15.6 33.9 23.2 17.4 17.0 12.1

 Owned ....................................................... 1.1 2.9 Q Q Q 24.6

 Rented ....................................................... 14.4 31.0 22.3 17.1 13.7 12.5

 Mobile Home ............................................... 6.2 Q 4.4 4.0 Q 28.6

 Owned ....................................................... 5.2 Q 3.8 3.9 1.9 27.7

 Rented ....................................................... 1.1 Q Q Q Q 36.5

Year of Construction

 1939 or Before ............................................. 18.5 36.5 9.5 8.4 5.5 11.4

 1940 to 1949 ............................................... 9.1 10.7 14.6 9.4 1.6 14.9

 1950 to 1959 ............................................... 12.4 15.4 14.4 10.4 11.1 11.3

 1960 to 1969 ............................................... 14.2 13.4 16.7 20.1 9.1 11.9

 1970 to 1979 ............................................... 19.3 10.4 19.4 21.1 27.5 10.8

 1980 to 1989 ............................................... 17.1 5.4 18.1 17.6 34.1 16.5

 1990 to 19973 .............................................. 9.6 8.1 7.3 12.9 11.2 21.0

Urban/Rural Location4

 City .............................................................. 47.5 45.2 69.7 54.9 55.4 6.1

 Town ............................................................ 17.9 13.2 13.4 17.5 9.6 20.2

 Suburbs ....................................................... 18.3 27.1 10.5 16.6 25.1 15.9

 Rural or Open Country ................................ 16.2 14.5 6.4 11.0 9.9 14.9

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ........................................................... 3.0 4.0 7.7 4.0 Q 18.5

 3 ................................................................. 9.0 16.6 14.7 12.9 5.8 12.3

 4 ................................................................. 18.0 21.9 19.8 13.6 15.5 13.5

 5 ................................................................. 20.9 13.4 19.5 23.5 22.9 8.7

 6 ................................................................. 19.7 19.4 17.2 18.2 20.8 7.5

 7 ................................................................. 14.0 9.9 10.9 12.8 18.7 13.1

 8 ................................................................. 8.3 7.4 5.5 6.1 7.4 19.5

 9 or More ..................................................... 6.9 7.5 4.6 8.8 7.0 17.3

Bedrooms

 None or 1 ..................................................... 13.0 22.1 21.3 17.8 7.7 12.0

 2 .................................................................. 28.4 28.2 29.6 20.7 32.2 9.6

 3 .................................................................. 40.4 32.0 31.7 42.4 46.5 6.2

 4 or More ..................................................... 18.3 17.7 17.4 19.1 13.5 12.2

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-7b. Housing Unit Characteristics by Four Most Populated States, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Four Most Populated States

RSE

Row

Factors

New York California Texas Florida

0.4 1.1 1.1 1.2 1.6

Other Rooms

(Excluding Bathrooms)

 None or 1 ..................................................... 5.0 6.7 11.6 6.6 Q 17.5

 2 .................................................................. 38.1 41.4 43.5 40.4 28.4 6.4

 3 .................................................................. 30.5 28.7 28.9 28.3 39.3 6.6

 4 .................................................................. 17.3 15.0 11.0 16.0 20.0 10.5

 5 or More ..................................................... 9.1 8.3 5.0 8.6 9.5 13.7

Full Bathrooms

 None or 1 ..................................................... 58.5 73.2 54.0 52.6 34.4 5.0

 2 .................................................................. 35.4 24.4 36.4 39.4 55.6 7.7

 3 or More ..................................................... 6.1 2.4 9.6 Q 10.0 20.4

Half Bathrooms

 None ........................................................... 72.0 68.3 78.4 77.8 79.6 3.2

 1 .................................................................. 26.1 28.8 20.9 21.4 19.6 9.0

 2 or More ..................................................... Q Q Q Q Q NF

Number of Stories

 Single-Family Homes .................................. 72.7 56.3 68.0 74.8 77.1 4.5

 1 Story ....................................................... 40.5 15.5 46.6 59.3 66.4 6.9

 2 Stories .................................................... 26.5 35.4 18.8 15.3 10.7 14.2

 3 Stories .................................................... 3.2 3.9 1.1 Q Q 26.5

 Split-Level .................................................. 2.4 1.3 Q Q Q 24.5

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

 Mobile Homes ............................................. 6.2 Q 4.4 4.0 Q 28.6

Number of Floors in

Apartment Buildings

 1 or 2 Floors ................................................ 10.7 Q 18.6 17.5 13.4 14.9

 3 or 4 Floors ................................................ 5.3 10.2 5.3 Q Q 21.7

 5 to 10 Floors .............................................. 2.0 17.2 Q Q 1.7 16.4

 11 to 20 Floors ............................................ 0.8 4.5 Q Q Q 14.2

 More than 20 Floors .................................... 0.2 Q 0.3 Q Q 21.9

 Don’t Know/No Answer ............................... 2.0 3.9 2.1 1.0 Q 25.3

Foundation/Basement

of Single-Family Homes

(More than one may apply)

 Basement .................................................... 32.7 48.5 4.9 Q Q 9.0

 Crawlspace .................................................. 22.2 4.6 30.6 26.0 10.2 15.8

 Concrete Slab .............................................. 22.6 7.2 35.2 48.7 66.2 8.5

 Not Asked (Mobile Homes

 and Multi-Family Units) ................................ 27.3 43.7 32.0 25.2 22.9 10.6

Garage/Carport

 Yes .............................................................. 53.7 40.7 59.4 58.8 51.7 5.1

 1-Car Garage ............................................ 16.0 16.9 12.9 9.7 16.6 11.5

 2-Car Garage ............................................ 29.2 20.2 39.2 36.5 28.8 6.7

 3-Car Garage ............................................ 2.7 2.4 4.8 1.9 Q 23.2

 Covered Carport ........................................ 6.3 1.2 2.9 12.0 7.2 17.6

 No ................................................................ 25.2 18.0 13.0 20.1 28.5 11.2

 Not Asked (Apartments) .............................. 21.1 41.3 27.6 21.2 19.8 10.4

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-7b. Housing Unit Characteristics by Four Most Populated States, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Four Most Populated States

RSE

Row

Factors

New York California Texas Florida

0.4 1.1 1.1 1.2 1.6

Fuels Used For Any Use

(more than one often used)

 Electricity ..................................................... 100.0 100.0 99.8 100.0 100.0 NE

 Natural Gas ................................................. 61.0 75.0 84.5 67.6 19.4 5.9

 Wood ........................................................... 14.8 12.3 18.5 12.3 11.5 15.8

 Fuel Oil ........................................................ 9.8 42.6 Q Q Q 17.6

 LPG ............................................................. 8.0 8.1 3.7 4.7 6.4 21.4

 Kerosene ..................................................... 3.4 Q 1.0 Q Q 26.0

 Solar ........................................................... 0.7 Q 0.7 Q Q 46.3

Main Heating Fuel

 Natural Gas ................................................. 52.7 49.8 68.2 54.1 11.0 8.6

 Electricity ..................................................... 29.2 5.5 25.0 41.3 79.5 10.7

 Fuel Oil ........................................................ 9.3 39.6 Q Q Q 16.5

 LPG ............................................................. 4.5 Q 1.9 3.8 2.2 22.7

 Wood ........................................................... 2.2 2.7 2.8 Q Q 24.2

 Kerosene ..................................................... 1.0 1.6 0.7 Q Q 34.2

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

 Other/None .................................................. 1.1 0.3 Q Q Q 22.4

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 Estimates provided by the household interview respondents, who were asked which category best described the total heated floorspace in the home. 3 New construction for 1997 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. 

• Percentages are calculated on unrounded numbers. • 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 1997 Residential Energy Consumption Survey.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-8b. Housing Unit Characteristics by Urban/Rural Location, 

 Percent of U.S. Households, 1997

Housing Unit

Characteristics

RSE Column Factor:

Total

Urban/Rural Location1

RSE

Row

Factors

City Town Suburbs Rural

0.6 0.8 1.3 1.3 1.2

Total .............................................................. 100.0 100.0 100.0 100.0 100.0 0.0

Census Region and Division

 Northeast ..................................................... 19.4 14.2 28.3 23.2 20.7 8.1

 New England ............................................. 5.2 4.1 11.4 2.4 4.9 14.0

 Middle Atlantic ........................................... 14.2 10.1 16.9 20.8 15.8 10.1

 Midwest ....................................................... 23.7 23.6 24.9 24.2 22.1 7.1

 East North Central ..................................... 16.7 18.4 13.9 16.5 14.7 8.6

 West North Central .................................... 7.0 5.2 11.0 7.7 7.4 14.2

 South ........................................................... 35.4 34.1 29.1 37.2 43.9 5.9

 South Atlantic ............................................ 18.4 17.2 12.7 23.6 22.3 9.6

 East South Central .................................... 6.3 4.3 6.1 4.8 13.7 14.5

 West South Central ................................... 10.7 12.5 10.3 8.8 7.8 12.9

 West ............................................................ 21.5 28.1 17.7 15.4 13.3 9.0

 Mountain .................................................... 6.1 8.2 5.3 3.0 4.5 13.9

 Pacific ........................................................ 15.4 19.9 12.4 12.4 8.9 11.4

Metropolitan Statistical Area

 Urban ........................................................... 77.5 87.9 55.3 94.8 52.0 3.6

 Central City ................................................ 36.2 57.7 13.4 24.8 11.5 9.1

 Suburban ................................................... 41.3 30.2 41.9 70.0 40.4 5.9

 Rural ............................................................ 22.5 12.1 44.7 5.2 48.0 7.9

Climate Zone2

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ............................... 9.1 7.8 13.0 5.1 13.4 20.6

 5,500 to 7,000 HDD ................................... 27.6 25.5 31.0 31.5 25.9 11.7

 4,000 to 5,499 HDD ................................... 22.2 17.7 23.4 30.5 24.6 11.9

 Fewer than 4,000 HDD .............................. 19.2 23.5 17.7 11.6 16.9 15.3

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................................ 21.9 25.5 15.0 21.3 19.3 11.1

Estimated Heated Floorspace Category

(square feet)3

 Fewer than 600 ........................................... 7.8 10.4 7.9 3.3 5.1 11.2

 600 to 999 .................................................. 21.2 25.7 22.8 12.9 15.6 6.7

 1,000 to 1,599 ............................................ 29.9 30.1 28.6 30.7 29.8 4.9

 1,600 to 1,999 ............................................ 15.1 12.5 16.1 18.2 18.0 6.7

 2,000 to 2,399 ............................................ 7.8 6.0 6.5 12.3 9.3 9.1

 2,400 to 2,999 ............................................ 5.3 3.2 5.2 9.4 6.8 12.7

 3,000 or More ............................................. 4.1 2.6 3.9 6.9 5.3 15.3

 No Estimate Provided .................................. 9.0 9.6 9.0 6.4 10.1 11.8

Ownership of Unit

 Owned ......................................................... 67.5 56.9 68.4 78.7 84.6 2.3

 Rented ......................................................... 32.5 43.1 31.6 21.3 15.4 6.0

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-8b. Housing Unit Characteristics by Urban/Rural Location, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Urban/Rural Location1

RSE

Row

Factors

City Town Suburbs Rural

0.6 0.8 1.3 1.3 1.2

Type and Ownership of Housing Unit

 Single-Family Detached .............................. 62.9 53.4 66.5 71.4 76.8 2.7

 Owned ....................................................... 54.8 44.9 57.2 65.6 69.3 3.1

 Rented ....................................................... 8.0 8.6 9.3 5.8 7.5 9.8

 Single-Family Attached ............................... 9.8 11.6 9.4 11.4 3.2 12.9

 Owned ....................................................... 5.4 6.0 5.2 7.6 1.5 17.7

 Rented ....................................................... 4.4 5.6 4.2 3.8 1.7 15.9

 Multifamily (2 to 4 units) .............................. 5.5 8.0 6.4 2.4 0.9 16.1

 Owned ....................................................... 0.9 1.3 1.0 0.5 Q 31.4

 Rented ....................................................... 4.6 6.7 5.4 1.9 0.7 16.9

 Multifamily (5 or more units) ........................ 15.6 23.3 12.1 10.8 2.3 12.4

 Owned ....................................................... 1.1 1.6 Q 1.3 Q 30.5

 Rented ....................................................... 14.4 21.6 11.6 9.5 2.1 12.9

 Mobile Home ............................................... 6.2 3.7 5.5 3.9 16.9 14.0

 Owned ....................................................... 5.2 3.1 4.4 3.7 13.6 14.6

 Rented ....................................................... 1.1 0.6 1.0 Q 3.3 26.1

Year of Construction

 1939 or Before ............................................. 18.5 21.9 22.0 6.5 18.0 8.6

 1940 to 1949 ............................................... 9.1 11.0 9.9 5.7 6.1 9.8

 1950 to 1959 ............................................... 12.4 13.8 10.5 15.2 7.0 7.4

 1960 to 1969 ............................................... 14.2 13.9 14.1 15.7 13.6 7.5

 1970 to 1979 ............................................... 19.3 18.4 17.8 20.1 22.6 6.1

 1980 to 1989 ............................................... 17.1 14.2 16.9 23.7 18.0 8.3

 1990 to 19974 .............................................. 9.6 6.7 8.7 13.2 14.7 11.8

Urban/Rural Location1

 City .............................................................. 47.5 100.0 -- -- -- 4.6

 Town ............................................................ 17.9 -- 100.0 -- -- 10.9

 Suburbs ....................................................... 18.3 -- -- 100.0 -- 8.9

 Rural or Open Country ................................ 16.2 -- -- -- 100.0 9.3

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ........................................................... 3.0 4.7 2.3 Q 1.3 20.1

 3 ................................................................. 9.0 13.2 7.9 4.4 3.4 11.1

 4 ................................................................. 18.0 20.4 19.5 14.2 13.7 7.7

 5 ................................................................. 20.9 21.0 21.6 16.8 24.6 5.4

 6 ................................................................. 19.7 18.1 21.1 19.6 23.3 5.7

 7 ................................................................. 14.0 11.2 13.2 18.6 18.1 7.1

 8 ................................................................. 8.3 6.6 7.5 14.6 6.8 9.6

 9 or More ..................................................... 6.9 4.8 7.0 10.8 8.7 10.3

Bedrooms

 None or 1 ..................................................... 13.0 18.7 11.6 6.1 5.4 9.5

 2 .................................................................. 28.4 31.7 30.7 22.1 23.2 5.3

 3 .................................................................. 40.4 35.9 38.5 44.6 50.7 4.0

 4 or More ..................................................... 18.3 13.7 19.3 27.2 20.7 6.2

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-8b. Housing Unit Characteristics by Urban/Rural Location, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Urban/Rural Location1

RSE

Row

Factors

City Town Suburbs Rural

0.6 0.8 1.3 1.3 1.2

Other Rooms

(Excluding Bathrooms)

 None or 1 ..................................................... 5.0 6.8 3.9 2.1 4.0 14.5

 2 .................................................................. 38.1 42.8 39.2 27.8 34.4 4.3

 3 .................................................................. 30.5 29.9 31.0 30.7 31.8 4.6

 4 .................................................................. 17.3 13.5 17.3 26.2 18.5 6.4

 5 or More ..................................................... 9.1 7.0 8.6 13.1 11.4 8.9

Full Bathrooms

 None or 1 ..................................................... 58.5 65.4 62.8 42.2 52.1 3.0

 2 .................................................................. 35.4 30.3 32.4 45.8 42.0 4.3

 3 or More ..................................................... 6.1 4.3 4.8 12.0 5.9 13.4

Half Bathrooms

 None ........................................................... 72.0 76.8 73.0 58.1 72.3 1.9

 1 .................................................................. 26.1 21.7 26.0 38.1 26.0 4.7

 2 or More ..................................................... Q Q Q Q Q NF

Number of Stories

 Single-Family Homes .................................. 72.7 65.0 75.9 82.9 80.0 2.2

 1 Story ....................................................... 40.5 38.6 40.7 39.4 47.0 4.5

 2 Stories .................................................... 26.5 21.9 29.6 32.7 29.8 6.0

 3 Stories .................................................... 3.2 3.0 3.4 5.3 1.1 15.3

 Split-Level .................................................. 2.4 1.4 2.2 5.3 2.1 20.2

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

 Mobile Homes ............................................. 6.2 3.7 5.5 3.9 16.9 14.0

Number of Floors in

Apartment Buildings

 1 or 2 Floors ................................................ 10.7 15.6 11.1 5.8 1.7 12.7

 3 or 4 Floors ................................................ 5.3 8.3 3.8 3.7 Q 20.9

 5 to 10 Floors .............................................. 2.0 3.1 0.8 Q Q 21.2

 11 to 20 Floors ............................................ 0.8 1.6 Q Q Q 31.5

 More than 20 Floors .................................... 0.2 0.4 Q Q Q 40.8

 Don’t Know/No Answer ............................... 2.0 2.3 2.6 1.7 0.8 27.5

Foundation/Basement

of Single-Family Homes

(More than one may apply)

 Basement .................................................... 32.7 25.4 38.1 40.3 39.8 5.8

 Crawlspace .................................................. 22.2 19.5 25.0 18.3 31.3 7.1

 Concrete Slab .............................................. 22.6 23.0 18.9 30.7 16.8 6.8

 Not Asked (Mobile Homes

 and Multi-Family Units) ................................ 27.3 35.0 24.1 17.1 20.0 7.0

Garage/Carport

 Yes .............................................................. 53.7 46.6 55.0 68.6 56.1 3.4

 1-Car Garage ............................................ 16.0 14.9 19.8 18.1 12.7 7.7

 2-Car Garage ............................................ 29.2 24.7 26.7 41.7 31.3 5.4

 3-Car Garage ............................................ 2.7 1.9 2.6 3.1 4.9 16.5

 Covered Carport ........................................ 6.3 5.9 6.6 5.8 8.1 11.9

 No ................................................................ 25.2 22.1 26.4 18.2 40.8 6.4

 Not Asked (Apartments) .............................. 21.1 31.3 18.6 13.2 3.1 10.2

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-8b. Housing Unit Characteristics by Urban/Rural Location, 

 Percent of U.S. Households, 1997 (Continued)

Housing Unit

Characteristics

RSE Column Factor:

Total

Urban/Rural Location1

RSE

Row

Factors

City Town Suburbs Rural

0.6 0.8 1.3 1.3 1.2

Fuels Used For Any Use

(more than one often used)

 Electricity ..................................................... 100.0 100.0 100.0 100.0 99.9 NE

 Natural Gas ................................................. 61.0 73.3 57.7 65.6 23.3 4.3

 Wood ........................................................... 14.8 7.3 15.5 19.9 30.3 7.6

 Fuel Oil ........................................................ 9.8 6.6 13.1 8.5 17.1 11.6

 LPG ............................................................. 8.0 1.9 7.9 3.2 31.2 14.2

 Kerosene ..................................................... 3.4 2.0 3.2 2.9 8.5 15.7

 Solar ........................................................... 0.7 0.5 Q 0.7 1.7 34.3

Main Heating Fuel

 Natural Gas ................................................. 52.7 61.5 52.1 59.4 20.0 4.8

 Electricity ..................................................... 29.2 28.9 27.3 29.5 31.7 6.0

 Fuel Oil ........................................................ 9.3 6.4 12.5 8.2 15.6 11.5

 LPG ............................................................. 4.5 0.8 4.9 1.1 19.0 18.6

 Wood ........................................................... 2.2 0.6 1.8 0.6 8.9 20.2

 Kerosene ..................................................... 1.0 0.3 1.2 Q 3.4 26.0

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

 Other/None .................................................. 1.1 1.5 Q 1.0 1.3 23.9

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 Estimates provided by the household interview respondents, who were asked which category best described the total heated floorspace in the home. 4 New construction for 1997 includes only those housing units built and occupied between January and the April-August period when the household interviews were

conducted.

-- = 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. 

• Percentages are calculated on unrounded numbers. • 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 1997 Residential Energy Consumption Survey.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-9b. Housing Unit Characteristics by Northeast Census Region, 

 Percent of U.S. Households, 1997

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 .............................................................. 100.0 100.0 100.0 100.0 0.0

Census Region and Division

 Northeast ..................................................... 19.4 100.0 100.0 100.0 NF

 New England ............................................. 5.2 26.9 Q 100.0 NF

 Middle Atlantic ........................................... 14.2 73.1 100.0 Q NF

 Midwest ....................................................... 23.7 -- -- -- NF

 East North Central ..................................... 16.7 -- -- -- NF

 West North Central .................................... 7.0 -- -- -- NF

 South ........................................................... 35.4 -- -- -- NF

 South Atlantic ............................................ 18.4 -- -- -- NF

 East South Central .................................... 6.3 -- -- -- NF

 West South Central ................................... 10.7 -- -- -- NF

 West ............................................................ 21.5 -- -- -- NF

 Mountain .................................................... 6.1 -- -- -- NF

 Pacific ........................................................ 15.4 -- -- -- NF

Metropolitan Statistical Area

 Urban ........................................................... 77.5 82.5 95.2 47.9 2.9

 Central City ................................................ 36.2 30.2 33.2 22.1 9.4

 Suburban ................................................... 41.3 52.2 62.0 25.9 5.0

 Rural ............................................................ 22.5 17.5 4.8 52.1 7.9

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ............................... 9.1 10.0 3.7 27.4 21.1

 5,500 to 7,000 HDD ................................... 27.6 48.7 39.8 72.6 7.5

 4,000 to 5,499 HDD ................................... 22.2 41.3 56.5 Q 4.8

 Fewer than 4,000 HDD .............................. 19.2 -- -- -- 17.9

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................................ 21.9 -- -- -- 13.1

Estimated Heated Floorspace Category

(square feet)2

 Fewer than 600 ........................................... 7.8 9.7 10.7 6.8 10.7

 600 to 999 .................................................. 21.2 22.4 21.4 25.0 4.9

 1,000 to 1,599 ............................................ 29.9 25.8 25.8 26.0 7.0

 1,600 to 1,999 ............................................ 15.1 12.2 11.6 13.7 9.7

 2,000 to 2,399 ............................................ 7.8 6.9 7.0 6.4 12.5

 2,400 to 2,999 ............................................ 5.3 4.9 4.9 5.1 17.5

 3,000 or More ............................................. 4.1 3.4 3.0 4.4 19.3

 No Estimate Provided .................................. 9.0 14.8 15.6 12.6 11.7

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-9b. Housing Unit Characteristics by Northeast Census Region, 

 Percent of U.S. Households, 1997 (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 ......................................................... 67.5 64.6 63.3 68.2 3.3

 Rented ......................................................... 32.5 35.4 36.7 31.8 6.4

Type and Ownership of Housing Unit

 Single-Family Detached .............................. 62.9 54.1 50.8 62.9 4.0

 Owned ....................................................... 54.8 49.9 46.8 58.4 4.8

 Rented ....................................................... 8.0 4.1 4.0 4.5 13.6

 Single-Family Attached ............................... 9.8 15.6 18.4 8.0 12.7

 Owned ....................................................... 5.4 9.7 11.7 4.1 16.7

 Rented ....................................................... 4.4 5.9 6.7 3.8 15.2

 Multifamily (2 to 4 units) .............................. 5.5 8.6 6.9 13.3 13.4

 Owned ....................................................... 0.9 1.7 1.4 2.4 29.5

 Rented ....................................................... 4.6 6.9 5.4 10.9 11.8

 Multifamily (5 or more units) ........................ 15.6 19.3 21.3 13.7 9.3

 Owned ....................................................... 1.1 1.5 1.5 Q 23.3

 Rented ....................................................... 14.4 17.8 19.8 12.1 8.8

 Mobile Home ............................................... 6.2 2.5 2.6 2.2 22.7

 Owned ....................................................... 5.2 1.8 1.9 Q 23.2

 Rented ....................................................... 1.1 Q Q Q 29.6

Year of Construction

 1939 or Before ............................................. 18.5 32.2 32.5 31.3 9.2

 1940 to 1949 ............................................... 9.1 9.8 9.8 9.8 13.3

 1950 to 1959 ............................................... 12.4 13.7 13.7 13.5 10.0

 1960 to 1969 ............................................... 14.2 13.2 11.8 16.9 10.1

 1970 to 1979 ............................................... 19.3 13.4 13.3 13.5 6.6

 1980 to 1989 ............................................... 17.1 11.9 12.4 10.4 13.2

 1990 to 19973 .............................................. 9.6 5.9 6.4 4.6 13.4

Urban/Rural Location4

 City .............................................................. 47.5 34.8 33.9 37.2 6.7

 Town ............................................................ 17.9 26.1 21.3 39.2 11.9

 Suburbs ....................................................... 18.3 21.8 26.7 8.4 11.4

 Rural or Open Country ................................ 16.2 17.2 18.0 15.2 11.0

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ........................................................... 3.0 3.2 3.0 3.8 14.9

 3 ................................................................. 9.0 11.3 12.6 7.9 9.0

 4 ................................................................. 18.0 18.1 17.9 18.8 9.3

 5 ................................................................. 20.9 17.3 16.6 19.1 6.7

 6 ................................................................. 19.7 19.8 19.8 19.7 7.0

 7 ................................................................. 14.0 14.1 14.7 12.7 8.0

 8 ................................................................. 8.3 8.7 8.7 8.6 12.7

 9 or More ..................................................... 6.9 7.4 6.7 9.4 11.0

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-9b. Housing Unit Characteristics by Northeast Census Region, 

 Percent of U.S. Households, 1997 (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

Bedrooms

 None or 1 ..................................................... 13.0 16.6 18.0 12.8 9.4

 2 .................................................................. 28.4 28.2 26.9 31.7 5.7

 3 .................................................................. 40.4 36.2 36.2 36.0 4.4

 4 or More ..................................................... 18.3 19.1 18.9 19.6 7.8

Other Rooms

(Excluding Bathrooms)

 None or 1 ..................................................... 5.0 5.0 4.6 6.1 15.2

 2 .................................................................. 38.1 35.4 36.1 33.7 4.6

 3 .................................................................. 30.5 31.8 31.9 31.4 6.0

 4 .................................................................. 17.3 18.5 18.5 18.4 7.1

 5 or More ..................................................... 9.1 9.3 8.8 10.4 9.1

Full Bathrooms

 None or 1 ..................................................... 58.5 71.9 71.5 73.1 3.3

 2 .................................................................. 35.4 25.4 25.8 24.3 7.6

 3 or More ..................................................... 6.1 2.7 2.8 2.7 23.1

Half Bathrooms

 None ........................................................... 72.0 66.4 63.8 73.6 2.3

 1 .................................................................. 26.1 30.9 33.3 24.3 3.9

 2 or More ..................................................... Q Q Q Q NF

Number of Stories

 Single-Family Homes .................................. 72.7 69.7 69.3 70.8 3.2

 1 Story ....................................................... 40.5 19.3 19.4 19.3 8.1

 2 Stories .................................................... 26.5 42.8 42.0 44.9 4.7

 3 Stories .................................................... 3.2 5.7 6.3 4.1 17.8

 Split-Level .................................................. 2.4 1.6 1.4 2.1 24.9

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

 Mobile Homes ............................................. 6.2 2.5 2.6 2.2 22.7

Number of Floors in

Apartment Buildings

 1 or 2 Floors ................................................ 10.7 7.9 6.9 10.4 16.2

 3 or 4 Floors ................................................ 5.3 7.6 7.0 9.4 23.5

 5 to 10 Floors .............................................. 2.0 6.9 8.7 Q 10.6

 11 to 20 Floors ............................................ 0.8 2.6 2.9 Q 24.0

 More than 20 Floors .................................... 0.2 Q Q Q 54.9

 Don’t Know/No Answer ............................... 2.0 2.5 2.7 Q 20.0

Foundation/Basement

of Single-Family Homes

(More than one may apply)

 Basement .................................................... 32.7 57.1 55.7 61.1 5.6

 Crawlspace .................................................. 22.2 7.2 7.2 7.4 12.4

 Concrete Slab .............................................. 22.6 9.8 10.7 7.2 14.4

 Not Asked (Mobile Homes

 and Multi-Family Units) ................................ 27.3 30.3 30.7 29.2 7.6

Garage/Carport

 Yes .............................................................. 53.7 47.4 49.0 43.1 4.3

 1-Car Garage ............................................ 16.0 22.9 23.8 20.4 8.1

 2-Car Garage ............................................ 29.2 21.5 21.4 21.5 6.1

 3-Car Garage ............................................ 2.7 1.9 2.3 Q 18.5

 Covered Carport ........................................ 6.3 1.4 1.6 Q 16.5

 No ................................................................ 25.2 24.7 22.9 29.8 7.6

 Not Asked (Apartments) .............................. 21.1 27.9 28.2 27.0 8.5

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-9b. Housing Unit Characteristics by Northeast Census Region, 

 Percent of U.S. Households, 1997 (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

Fuels Used For Any Use

(more than one often used)

 Electricity ..................................................... 100.0 100.0 100.0 100.0 NE

 Natural Gas ................................................. 61.0 59.9 68.4 36.6 7.4

 Wood ........................................................... 14.8 12.6 11.2 16.4 11.3

 Fuel Oil ........................................................ 9.8 37.8 32.0 53.7 10.1

 LPG ............................................................. 8.0 7.9 6.6 11.3 18.1

 Kerosene ..................................................... 3.4 4.9 4.1 6.8 20.4

 Solar ........................................................... 0.7 Q Q Q 48.4

Main Heating Fuel

 Natural Gas ................................................. 52.7 46.4 53.4 27.4 9.5

 Electricity ..................................................... 29.2 11.9 11.7 12.2 12.3

 Fuel Oil ........................................................ 9.3 35.9 30.2 51.3 10.1

 LPG ............................................................. 4.5 1.1 Q Q 29.1

 Wood ........................................................... 2.2 1.9 1.7 2.6 22.8

 Kerosene ..................................................... 1.0 2.1 1.5 Q 32.4

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

 Other/None .................................................. 1.1 0.7 Q Q 34.9

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 Estimates provided by the household interview respondents, who were asked which category best described the total heated floorspace in the home. 3 New construction for 1997 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. 

• Percentages are calculated on unrounded numbers. • 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 1997 Residential Energy Consumption Survey.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-10b. Housing Unit Characteristics by Midwest Census Region, 

 Percent of U.S. Households, 1997

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 1.1 1.8

Total .............................................................. 100.0 100.0 100.0 100.0 0.0

Census Region and Division

 Northeast ..................................................... 19.4 -- -- -- NF

 New England ............................................. 5.2 -- -- -- NF

 Middle Atlantic ........................................... 14.2 -- -- -- NF

 Midwest ....................................................... 23.7 100.0 100.0 100.0 NF

 East North Central ..................................... 16.7 70.3 100.0 Q NF

 West North Central .................................... 7.0 29.7 Q 100.0 NF

 South ........................................................... 35.4 -- -- -- NF

 South Atlantic ............................................ 18.4 -- -- -- NF

 East South Central .................................... 6.3 -- -- -- NF

 West South Central ................................... 10.7 -- -- -- NF

 West ............................................................ 21.5 -- -- -- NF

 Mountain .................................................... 6.1 -- -- -- NF

 Pacific ........................................................ 15.4 -- -- -- NF

Metropolitan Statistical Area

 Urban ........................................................... 77.5 73.9 78.3 63.3 2.5

 Central City ................................................ 36.2 36.2 39.2 29.1 8.2

 Suburban ................................................... 41.3 37.7 39.1 34.1 7.8

 Rural ............................................................ 22.5 26.1 21.7 36.7 6.5

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ............................... 9.1 22.6 16.0 38.3 28.9

 5,500 to 7,000 HDD ................................... 27.6 61.0 73.2 Q 14.1

 4,000 to 5,499 HDD ................................... 22.2 16.3 Q 29.3 22.1

 Fewer than 4,000 HDD .............................. 19.2 -- -- -- 19.3

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................................ 21.9 -- -- -- 14.1

Estimated Heated Floorspace Category

(square feet)2

 Fewer than 600 ........................................... 7.8 6.9 7.4 5.7 12.7

 600 to 999 .................................................. 21.2 21.3 21.4 21.1 8.7

 1,000 to 1,599 ............................................ 29.9 28.9 28.7 29.3 6.5

 1,600 to 1,999 ............................................ 15.1 17.5 17.1 18.6 6.5

 2,000 to 2,399 ............................................ 7.8 7.6 7.1 8.9 9.4

 2,400 to 2,999 ............................................ 5.3 5.8 5.8 5.7 14.6

 3,000 or More ............................................. 4.1 4.0 4.2 3.6 18.3

 No Estimate Provided .................................. 9.0 7.9 8.3 7.1 16.4

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-10b. Housing Unit Characteristics by Midwest Census Region, 

 Percent of U.S. Households, 1997 (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 1.1 1.8

Ownership of Unit

 Owned ......................................................... 67.5 71.9 70.0 76.2 3.3

 Rented ......................................................... 32.5 28.1 30.0 23.8 8.2

Type and Ownership of Housing Unit

 Single-Family Detached .............................. 62.9 69.1 66.3 75.7 3.0

 Owned ....................................................... 54.8 61.8 59.3 67.5 3.8

 Rented ....................................................... 8.0 7.4 7.0 8.2 10.4

 Single-Family Attached ............................... 9.8 7.6 7.8 6.9 14.3

 Owned ....................................................... 5.4 3.8 4.1 3.2 19.3

 Rented ....................................................... 4.4 3.7 3.8 3.6 18.1

 Multifamily (2 to 4 units) .............................. 5.5 7.1 8.6 3.5 12.8

 Owned ....................................................... 0.9 1.7 2.0 Q 36.5

 Rented ....................................................... 4.6 5.4 6.6 2.6 17.1

 Multifamily (5 or more units) ........................ 15.6 11.7 12.8 9.0 15.3

 Owned ....................................................... 1.1 Q Q Q 40.6

 Rented ....................................................... 14.4 11.1 12.1 8.7 16.0

 Mobile Home ............................................... 6.2 4.6 4.4 4.9 23.2

 Owned ....................................................... 5.2 4.0 3.9 4.3 23.6

 Rented ....................................................... 1.1 0.5 Q Q 38.9

Year of Construction

 1939 or Before ............................................. 18.5 30.0 28.8 32.6 9.9

 1940 to 1949 ............................................... 9.1 8.7 9.7 6.4 11.6

 1950 to 1959 ............................................... 12.4 11.3 11.9 10.0 9.3

 1960 to 1969 ............................................... 14.2 13.2 13.7 11.8 11.1

 1970 to 1979 ............................................... 19.3 16.7 17.8 14.0 10.4

 1980 to 1989 ............................................... 17.1 12.0 11.1 14.3 14.0

 1990 to 19973 .............................................. 9.6 8.2 7.0 11.0 12.0

Urban/Rural Location4

 City .............................................................. 47.5 47.3 52.6 34.8 5.3

 Town ............................................................ 17.9 18.8 14.9 28.1 11.4

 Suburbs ....................................................... 18.3 18.7 18.1 20.0 8.5

 Rural or Open Country ................................ 16.2 15.1 14.3 17.1 13.5

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ........................................................... 3.0 2.3 2.6 Q 26.6

 3 ................................................................. 9.0 6.2 7.8 2.4 15.5

 4 ................................................................. 18.0 17.8 17.2 19.4 8.9

 5 ................................................................. 20.9 20.1 19.3 22.1 4.7

 6 ................................................................. 19.7 20.1 20.0 20.2 5.8

 7 ................................................................. 14.0 15.0 14.6 16.0 7.4

 8 ................................................................. 8.3 10.7 11.0 9.9 11.6

 9 or More ..................................................... 6.9 7.7 7.5 8.3 9.3

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-10b. Housing Unit Characteristics by Midwest Census Region, 

 Percent of U.S. Households, 1997 (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 1.1 1.8

Bedrooms

 None or 1 ..................................................... 13.0 11.4 13.0 7.6 9.7

 2 .................................................................. 28.4 27.7 27.0 29.4 5.5

 3 .................................................................. 40.4 40.6 39.7 42.6 3.7

 4 or More ..................................................... 18.3 20.3 20.3 20.3 6.9

Other Rooms

(Excluding Bathrooms)

 None or 1 ..................................................... 5.0 3.1 3.5 Q 19.1

 2 .................................................................. 38.1 34.8 35.6 33.1 4.7

 3 .................................................................. 30.5 30.5 28.9 34.4 4.9

 4 .................................................................. 17.3 20.1 20.9 18.2 7.2

 5 or More ..................................................... 9.1 11.5 11.1 12.3 10.1

Full Bathrooms

 None or 1 ..................................................... 58.5 64.5 65.5 62.2 3.2

 2 .................................................................. 35.4 30.2 29.9 30.8 5.4

 3 or More ..................................................... 6.1 5.3 4.6 7.0 18.8

Half Bathrooms

 None ........................................................... 72.0 68.7 68.9 68.1 1.8

 1 .................................................................. 26.1 28.9 28.9 28.9 4.9

 2 or More ..................................................... Q Q Q Q NF

Number of Stories

 Single-Family Homes .................................. 72.7 76.7 74.2 82.6 2.1

 1 Story ....................................................... 40.5 33.7 32.1 37.4 5.7

 2 Stories .................................................... 26.5 34.6 34.6 34.4 7.3

 3 Stories .................................................... 3.2 3.6 4.0 2.7 12.3

 Split-Level .................................................. 2.4 4.7 3.3 8.0 20.0

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

 Mobile Homes ............................................. 6.2 4.6 4.4 4.9 23.2

Number of Floors in

Apartment Buildings

 1 or 2 Floors ................................................ 10.7 9.3 10.1 7.6 17.1

 3 or 4 Floors ................................................ 5.3 5.4 6.1 3.7 26.0

 5 to 10 Floors .............................................. 2.0 Q Q Q 24.5

 11 to 20 Floors ............................................ 0.8 Q Q Q 45.2

 More than 20 Floors .................................... 0.2 Q Q Q 58.9

 Don’t Know/No Answer ............................... 2.0 2.5 Q Q 40.9

Foundation/Basement

of Single-Family Homes

(More than one may apply)

 Basement .................................................... 32.7 58.6 55.6 65.6 6.1

 Crawlspace .................................................. 22.2 16.1 18.1 11.4 12.5

 Concrete Slab .............................................. 22.6 9.5 9.2 10.3 11.4

 Not Asked (Mobile Homes

 and Multi-Family Units) ................................ 27.3 23.3 25.8 17.4 6.8

Garage/Carport

 Yes .............................................................. 53.7 62.1 60.0 67.1 3.3

 1-Car Garage ............................................ 16.0 17.3 14.2 24.7 11.2

 2-Car Garage ............................................ 29.2 38.0 38.6 36.7 6.7

 3-Car Garage ............................................ 2.7 4.7 5.1 3.7 15.7

 Covered Carport ........................................ 6.3 2.3 2.2 Q 16.5

 No ................................................................ 25.2 19.1 18.6 20.4 10.0

 Not Asked (Apartments) .............................. 21.1 18.7 21.4 12.5 10.0

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-10b. Housing Unit Characteristics by Midwest Census Region, 

 Percent of U.S. Households, 1997 (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 1.1 1.8

Fuels Used For Any Use

(more than one often used)

 Electricity ..................................................... 100.0 100.0 100.0 100.0 NE

 Natural Gas ................................................. 61.0 77.1 80.8 68.4 5.0

 Wood ........................................................... 14.8 10.9 10.0 12.9 12.2

 Fuel Oil ........................................................ 9.8 4.4 3.8 5.7 17.5

 LPG ............................................................. 8.0 9.6 6.8 16.2 20.8

 Kerosene ..................................................... 3.4 1.8 2.1 Q 17.5

 Solar ........................................................... 0.7 Q Q Q 51.9

Main Heating Fuel

 Natural Gas ................................................. 52.7 74.5 78.0 66.4 5.4

 Electricity ..................................................... 29.2 11.1 11.0 11.6 15.6

 Fuel Oil ........................................................ 9.3 4.3 3.7 5.7 17.1

 LPG ............................................................. 4.5 7.4 5.5 11.9 21.8

 Wood ........................................................... 2.2 1.8 Q Q 32.2

 Kerosene ..................................................... 1.0 Q Q Q 34.8

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

 Other/None .................................................. 1.1 Q Q Q 34.0

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 Estimates provided by the household interview respondents, who were asked which category best described the total heated floorspace in the home. 3 New construction for 1997 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. 

• Percentages are calculated on unrounded numbers. • 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 1997 Residential Energy Consumption Survey.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-11b. Housing Unit Characteristics by South Census Region, 

 Percent of U.S. Households, 1997

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 1.5 1.3

Total .............................................................. 100.0 100.0 100.0 100.0 100.0 0.0

Census Region and Division

 Northeast ..................................................... 19.4 -- -- -- -- NF

 New England ............................................. 5.2 -- -- -- -- NF

 Middle Atlantic ........................................... 14.2 -- -- -- -- NF

 Midwest ....................................................... 23.7 -- -- -- -- NF

 East North Central ..................................... 16.7 -- -- -- -- NF

 West North Central .................................... 7.0 -- -- -- -- NF

 South ........................................................... 35.4 100.0 100.0 100.0 100.0 NF

 South Atlantic ............................................ 18.4 52.1 100.0 Q Q NF

 East South Central .................................... 6.3 17.7 Q 100.0 Q NF

 West South Central ................................... 10.7 30.2 Q Q 100.0 NF

 West ............................................................ 21.5 -- -- -- -- NF

 Mountain .................................................... 6.1 -- -- -- -- NF

 Pacific ........................................................ 15.4 -- -- -- -- NF

Metropolitan Statistical Area

 Urban ........................................................... 77.5 70.6 75.5 50.1 74.1 1.6

 Central City ................................................ 36.2 34.0 32.4 23.9 42.6 10.2

 Suburban ................................................... 41.3 36.6 43.1 26.3 31.5 8.8

 Rural ............................................................ 22.5 29.4 24.5 49.9 25.9 4.0

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ............................... 9.1 -- -- -- -- 35.3

 5,500 to 7,000 HDD ................................... 27.6 -- -- -- -- NC

 4,000 to 5,499 HDD ................................... 22.2 22.3 30.6 36.1 Q 11.5

 Fewer than 4,000 HDD .............................. 19.2 25.6 27.6 Q Q 11.1

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................................ 21.9 52.1 41.8 Q 86.8 7.2

Estimated Heated Floorspace Category

(square feet)2

 Fewer than 600 ........................................... 7.8 5.7 5.3 7.1 5.7 13.4

 600 to 999 .................................................. 21.2 19.0 17.5 22.4 19.8 6.6

 1,000 to 1,599 ............................................ 29.9 32.8 34.6 30.5 31.0 6.7

 1,600 to 1,999 ............................................ 15.1 15.8 15.7 15.4 16.3 8.8

 2,000 to 2,399 ............................................ 7.8 8.3 7.6 7.8 9.8 10.6

 2,400 to 2,999 ............................................ 5.3 5.0 5.1 4.8 5.1 14.5

 3,000 or More ............................................. 4.1 5.1 4.5 4.9 6.3 21.2

 No Estimate Provided .................................. 9.0 8.2 9.7 7.2 6.0 17.0

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-11b. Housing Unit Characteristics by South Census Region, 

 Percent of U.S. Households, 1997 (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 1.5 1.3

Ownership of Unit

 Owned ......................................................... 67.5 70.7 69.3 78.1 68.7 2.7

 Rented ......................................................... 32.5 29.3 30.7 21.9 31.3 6.7

Type and Ownership of Housing Unit

 Single-Family Detached .............................. 62.9 66.6 62.2 69.6 72.5 2.8

 Owned ....................................................... 54.8 57.6 54.1 62.3 61.1 3.2

 Rented ....................................................... 8.0 9.0 8.1 7.4 11.4 11.7

 Single-Family Attached ............................... 9.8 7.7 10.7 5.8 3.4 18.8

 Owned ....................................................... 5.4 4.8 7.8 Q Q 21.7

 Rented ....................................................... 4.4 2.8 2.9 2.5 2.9 19.0

 Multifamily (2 to 4 units) .............................. 5.5 4.0 3.6 5.4 3.7 21.3

 Owned ....................................................... 0.9 Q Q Q Q 39.4

 Rented ....................................................... 4.6 3.6 3.2 4.9 3.6 22.4

 Multifamily (5 or more units) ........................ 15.6 13.4 15.5 6.7 13.9 12.7

 Owned ....................................................... 1.1 1.0 Q Q Q 41.1

 Rented ....................................................... 14.4 12.4 14.3 5.5 13.3 12.9

 Mobile Home ............................................... 6.2 8.3 8.0 12.4 6.5 15.4

 Owned ....................................................... 5.2 6.8 5.8 10.8 6.4 16.7

 Rented ....................................................... 1.1 1.5 2.2 Q Q 26.2

Year of Construction

 1939 or Before ............................................. 18.5 8.6 8.4 10.6 7.9 12.1

 1940 to 1949 ............................................... 9.1 7.9 7.1 7.7 9.4 9.5

 1950 to 1959 ............................................... 12.4 11.7 11.6 12.8 11.3 8.7

 1960 to 1969 ............................................... 14.2 14.2 11.8 13.7 18.7 8.1

 1970 to 1979 ............................................... 19.3 21.8 21.3 23.4 21.6 8.1

 1980 to 1989 ............................................... 17.1 22.8 27.0 17.3 18.8 11.1

 1990 to 19973 .............................................. 9.6 12.9 12.8 14.5 12.2 15.3

Urban/Rural Location4

 City .............................................................. 47.5 45.8 44.5 32.7 55.7 6.8

 Town ............................................................ 17.9 14.8 12.4 17.5 17.3 15.5

 Suburbs ....................................................... 18.3 19.3 23.5 14.1 15.0 12.0

 Rural or Open Country ................................ 16.2 20.1 19.7 35.6 11.9 9.3

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ........................................................... 3.0 1.7 1.4 Q 2.7 24.8

 3 ................................................................. 9.0 7.8 6.6 6.4 10.8 11.8

 4 ................................................................. 18.0 16.2 17.2 18.3 13.3 8.3

 5 ................................................................. 20.9 24.2 20.8 26.1 28.8 7.1

 6 ................................................................. 19.7 20.6 21.9 22.0 17.6 6.6

 7 ................................................................. 14.0 15.0 16.7 11.7 13.9 8.3

 8 ................................................................. 8.3 7.6 8.1 8.1 6.5 13.7

 9 or More ..................................................... 6.9 6.8 7.2 6.4 6.4 12.8

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-11b. Housing Unit Characteristics by South Census Region, 

 Percent of U.S. Households, 1997 (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 1.5 1.3

Bedrooms

 None or 1 ..................................................... 13.0 9.7 7.9 6.9 14.2 10.8

 2 .................................................................. 28.4 27.4 28.5 32.5 22.7 5.3

 3 .................................................................. 40.4 46.1 47.6 44.0 44.6 5.2

 4 or More ..................................................... 18.3 16.8 16.0 16.7 18.4 8.6

Other Rooms

(Excluding Bathrooms)

 None or 1 ..................................................... 5.0 3.6 3.2 2.9 4.8 18.0

 2 .................................................................. 38.1 38.1 34.1 42.4 42.6 4.0

 3 .................................................................. 30.5 31.3 32.8 28.7 30.2 5.9

 4 .................................................................. 17.3 18.2 20.5 16.1 15.4 7.3

 5 or More ..................................................... 9.1 8.7 9.4 9.8 7.1 12.0

Full Bathrooms

 None or 1 ..................................................... 58.5 50.6 46.6 57.9 53.2 2.8

 2 .................................................................. 35.4 42.4 45.6 37.4 39.7 4.7

 3 or More ..................................................... 6.1 7.0 7.8 4.7 7.0 18.4

Half Bathrooms

 None ........................................................... 72.0 74.0 71.5 78.8 75.6 2.2

 1 .................................................................. 26.1 24.5 26.8 20.0 23.0 7.0

 2 or More ..................................................... Q Q Q Q Q NF

Number of Stories

 Single-Family Homes .................................. 72.7 74.3 73.0 75.4 75.9 2.8

 1 Story ....................................................... 40.5 53.0 47.2 55.3 61.7 5.2

 2 Stories .................................................... 26.5 17.4 19.4 18.0 13.5 10.3

 3 Stories .................................................... 3.2 2.3 4.0 Q Q 14.3

 Split-Level .................................................. 2.4 1.6 2.3 Q Q 20.9

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

 Mobile Homes ............................................. 6.2 8.3 8.0 12.4 6.5 15.4

Number of Floors in

Apartment Buildings

 1 or 2 Floors ................................................ 10.7 11.5 10.6 9.4 14.2 13.8

 3 or 4 Floors ................................................ 5.3 3.6 5.7 Q Q 35.6

 5 to 10 Floors .............................................. 2.0 0.5 Q Q Q 31.2

 11 to 20 Floors ............................................ 0.8 Q Q Q Q 44.6

 More than 20 Floors .................................... 0.2 Q Q Q Q 58.1

 Don’t Know/No Answer ............................... 2.0 1.1 Q Q Q 30.2

Foundation/Basement

of Single-Family Homes

(More than one may apply)

 Basement .................................................... 32.7 13.7 17.3 20.1 3.9 13.5

 Crawlspace .................................................. 22.2 30.1 27.2 37.7 30.6 6.3

 Concrete Slab .............................................. 22.6 34.2 32.2 20.7 45.6 6.7

 Not Asked (Mobile Homes

 and Multi-Family Units) ................................ 27.3 25.7 27.0 24.6 24.1 8.1

Garage/Carport

 Yes .............................................................. 53.7 48.3 43.6 44.0 58.9 3.8

 1-Car Garage ............................................ 16.0 13.0 13.8 10.7 13.0 8.5

 2-Car Garage ............................................ 29.2 24.2 20.4 20.8 32.8 7.6

 3-Car Garage ............................................ 2.7 1.2 Q Q Q 21.6

 Covered Carport ........................................ 6.3 10.9 9.4 12.2 12.7 11.4

 No ................................................................ 25.2 34.3 37.4 43.9 23.5 7.5

 Not Asked (Apartments) .............................. 21.1 17.4 19.1 12.1 17.5 10.9

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-11b. Housing Unit Characteristics by South Census Region, 

 Percent of U.S. Households, 1997 (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 1.5 1.3

Fuels Used For Any Use

(more than one often used)

 Electricity ..................................................... 100.0 100.0 100.0 100.0 100.0 NE

 Natural Gas ................................................. 61.0 45.8 34.4 42.2 67.6 7.1

 Wood ........................................................... 14.8 15.9 17.6 17.1 12.3 9.1

 Fuel Oil ........................................................ 9.8 3.2 6.1 Q Q 27.7

 LPG ............................................................. 8.0 9.0 8.7 17.0 4.8 18.3

 Kerosene ..................................................... 3.4 5.2 7.0 7.0 Q 15.3

 Solar ........................................................... 0.7 1.0 1.8 Q Q 47.5

Main Heating Fuel

 Natural Gas ................................................. 52.7 38.3 28.6 36.2 56.1 7.5

 Electricity ..................................................... 29.2 48.7 55.4 45.7 38.7 7.2

 Fuel Oil ........................................................ 9.3 3.1 5.9 Q Q 27.1

 LPG ............................................................. 4.5 5.7 4.4 13.3 3.6 18.1

 Wood ........................................................... 2.2 1.9 2.2 2.6 Q 20.6

 Kerosene ..................................................... 1.0 1.2 2.0 Q Q 20.5

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

 Other/None .................................................. 1.1 1.0 1.4 Q Q 39.2

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 Estimates provided by the household interview respondents, who were asked which category best described the total heated floorspace in the home. 3 New construction for 1997 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.

NC = No cases in sample.

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. 

• Percentages are calculated on unrounded numbers. • 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 1997 Residential Energy Consumption Survey.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-12b. Housing Unit Characteristics by West Census Region, 

 Percent of U.S. Households, 1997

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 1.2

Total .............................................................. 100.0 100.0 100.0 100.0 0.0

Census Region and Division

 Northeast ..................................................... 19.4 -- -- -- NF

 New England ............................................. 5.2 -- -- -- NF

 Middle Atlantic ........................................... 14.2 -- -- -- NF

 Midwest ....................................................... 23.7 -- -- -- NF

 East North Central ..................................... 16.7 -- -- -- NF

 West North Central .................................... 7.0 -- -- -- NF

 South ........................................................... 35.4 -- -- -- NF

 South Atlantic ............................................ 18.4 -- -- -- NF

 East South Central .................................... 6.3 -- -- -- NF

 West South Central ................................... 10.7 -- -- -- NF

 West ............................................................ 21.5 100.0 100.0 100.0 NF

 Mountain .................................................... 6.1 28.3 100.0 Q NF

 Pacific ........................................................ 15.4 71.7 Q 100.0 NF

Metropolitan Statistical Area

 Urban ........................................................... 77.5 88.3 78.4 92.3 3.9

 Central City ................................................ 36.2 45.4 53.9 42.1 9.1

 Suburban ................................................... 41.3 42.9 24.5 50.2 9.4

 Rural ............................................................ 22.5 11.7 21.6 7.7 12.4

Climate Zone1

 Fewer than 2,000 CDD and--

 More than 7,000 HDD ............................... 9.1 8.4 14.8 5.9 9.1

 5,500 to 7,000 HDD ................................... 27.6 17.2 44.4 Q 18.3

 4,000 to 5,499 HDD ................................... 22.2 11.1 Q 15.5 27.5

 Fewer than 4,000 HDD .............................. 19.2 47.3 Q 63.4 4.3

 2,000 CDD or More and --

 Fewer than 4,000 HDD ................................ 21.9 16.0 34.0 8.8 7.2

Estimated Heated Floorspace Category

(square feet)2

 Fewer than 600 ........................................... 7.8 10.3 8.2 11.1 11.2

 600 to 999 .................................................. 21.2 23.4 22.8 23.7 8.2

 1,000 to 1,599 ............................................ 29.9 30.0 33.9 28.5 5.3

 1,600 to 1,999 ............................................ 15.1 13.7 12.7 14.1 7.2

 2,000 to 2,399 ............................................ 7.8 7.9 7.7 8.0 11.9

 2,400 to 2,999 ............................................ 5.3 5.3 5.6 5.2 10.6

 3,000 or More ............................................. 4.1 3.0 4.4 2.4 20.2

 No Estimate Provided .................................. 9.0 6.3 4.6 7.0 14.3

Ownership of Unit

 Owned ......................................................... 67.5 59.8 67.8 56.7 3.6

 Rented ......................................................... 32.5 40.2 32.2 43.3 6.1

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-12b. Housing Unit Characteristics by West Census Region, 

 Percent of U.S. Households, 1997 (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 1.2

Type and Ownership of Housing Unit

 Single-Family Detached .............................. 62.9 57.7 60.7 56.5 4.7

 Owned ....................................................... 54.8 47.0 52.4 44.8 5.4

 Rented ....................................................... 8.0 10.7 8.3 11.7 9.0

 Single-Family Attached ............................... 9.8 10.6 11.8 10.1 14.8

 Owned ....................................................... 5.4 4.2 4.7 4.0 22.6

 Rented ....................................................... 4.4 6.4 7.1 6.1 15.1

 Multifamily (2 to 4 units) .............................. 5.5 3.7 3.2 3.9 21.1

 Owned ....................................................... 0.9 Q Q Q 37.9

 Rented ....................................................... 4.6 3.4 2.6 3.8 23.2

 Multifamily (5 or more units) ........................ 15.6 20.1 13.6 22.6 11.3

 Owned ....................................................... 1.1 1.7 Q 1.9 36.4

 Rented ....................................................... 14.4 18.4 12.4 20.7 10.5

 Mobile Home ............................................... 6.2 8.0 10.7 6.9 16.1

 Owned ....................................................... 5.2 6.7 8.8 5.9 18.6

 Rented ....................................................... 1.1 1.3 Q 1.0 29.3

Year of Construction

 1939 or Before ............................................. 18.5 9.4 10.5 9.0 10.5

 1940 to 1949 ............................................... 9.1 10.7 6.8 12.2 10.3

 1950 to 1959 ............................................... 12.4 13.4 13.0 13.6 8.1

 1960 to 1969 ............................................... 14.2 16.4 18.2 15.7 8.3

 1970 to 1979 ............................................... 19.3 23.4 25.6 22.5 6.8

 1980 to 1989 ............................................... 17.1 17.8 16.9 18.1 11.1

 1990 to 19973 .............................................. 9.6 8.9 9.0 8.8 18.4

Urban/Rural Location4

 City .............................................................. 47.5 62.1 63.6 61.5 5.4

 Town ............................................................ 17.9 14.8 15.6 14.4 12.7

 Suburbs ....................................................... 18.3 13.1 8.9 14.7 13.0

 Rural or Open Country ................................ 16.2 10.1 11.9 9.3 12.9

Total Number of Rooms

(Excluding Bathrooms)

 1 or 2 ........................................................... 3.0 5.8 3.1 6.9 15.3

 3 ................................................................. 9.0 12.1 9.1 13.2 10.6

 4 ................................................................. 18.0 21.2 21.8 20.9 9.3

 5 ................................................................. 20.9 19.9 21.2 19.4 7.4

 6 ................................................................. 19.7 17.8 17.0 18.0 5.9

 7 ................................................................. 14.0 11.3 12.8 10.7 11.3

 8 ................................................................. 8.3 6.2 8.5 5.3 10.4

 9 or More ..................................................... 6.9 5.8 6.5 5.5 13.0

Bedrooms

 None or 1 ..................................................... 13.0 16.9 11.6 19.0 8.3

 2 .................................................................. 28.4 30.9 31.9 30.5 7.1

 3 .................................................................. 40.4 34.6 37.7 33.3 5.8

 4 or More ..................................................... 18.3 17.7 18.9 17.2 8.7

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-12b. Housing Unit Characteristics by West Census Region, 

 Percent of U.S. Households, 1997 (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 1.2

Other Rooms

(Excluding Bathrooms)

 None or 1 ..................................................... 5.0 9.3 6.2 10.5 12.3

 2 .................................................................. 38.1 43.9 43.6 44.0 4.1

 3 .................................................................. 30.5 28.2 27.1 28.6 5.5

 4 .................................................................. 17.3 11.7 13.1 11.1 10.2

 5 or More ..................................................... 9.1 6.9 10.0 5.7 10.4

Full Bathrooms

 None or 1 ..................................................... 58.5 52.8 52.8 52.8 3.8

 2 .................................................................. 35.4 38.9 39.5 38.7 4.0

 3 or More ..................................................... 6.1 8.3 7.8 8.5 15.9

Half Bathrooms

 None ........................................................... 72.0 77.2 77.8 77.0 2.1

 1 .................................................................. 26.1 21.6 21.2 21.7 6.3

 2 or More ..................................................... Q Q Q Q NF

Number of Stories

 Single-Family Homes .................................. 72.7 68.2 72.4 66.6 3.6

 1 Story ....................................................... 40.5 46.5 54.1 43.5 5.5

 2 Stories .................................................... 26.5 18.1 13.9 19.8 9.8

 3 Stories .................................................... 3.2 1.9 2.5 1.6 18.2

 Split-Level .................................................. 2.4 1.7 Q 1.7 30.2

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

 Mobile Homes ............................................. 6.2 8.0 10.7 6.9 16.1

Number of Floors in

Apartment Buildings

 1 or 2 Floors ................................................ 10.7 13.7 9.6 15.3 11.4

 3 or 4 Floors ................................................ 5.3 6.1 5.7 6.2 21.7

 5 to 10 Floors .............................................. 2.0 Q Q Q 23.2

 11 to 20 Floors ............................................ 0.8 Q Q Q 42.9

 More than 20 Floors .................................... 0.2 Q Q Q 55.8

 Don’t Know/No Answer ............................... 2.0 2.4 Q 2.8 21.0

Foundation/Basement

of Single-Family Homes

(More than one may apply)

 Basement .................................................... 32.7 13.3 25.3 8.5 9.8

 Crawlspace .................................................. 22.2 29.3 23.1 31.7 9.9

 Concrete Slab .............................................. 22.6 29.7 29.8 29.7 9.5

 Not Asked (Mobile Homes

 and Multi-Family Units) ................................ 27.3 31.8 27.6 33.4 8.3

Garage/Carport

 Yes .............................................................. 53.7 58.9 56.3 60.0 4.0

 1-Car Garage ............................................ 16.0 13.3 14.0 13.0 7.8

 2-Car Garage ............................................ 29.2 34.8 30.5 36.4 7.6

 3-Car Garage ............................................ 2.7 3.8 2.9 4.2 15.5

 Covered Carport ........................................ 6.3 7.8 9.6 7.0 14.3

 No ................................................................ 25.2 17.3 26.9 13.5 7.5

 Not Asked (Apartments) .............................. 21.1 23.8 16.8 26.5 10.5

See footnotes at end of table.

Energy Information Administration

A Look at Residential Energy Consumption in 1997
Table HC1-12b. Housing Unit Characteristics by West Census Region, 

 Percent of U.S. Households, 1997 (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 1.2

Fuels Used For Any Use

(more than one often used)

 Electricity ..................................................... 100.0 99.8 100.0 99.8 NE

 Natural Gas ................................................. 61.0 69.2 71.8 68.2 2.5

 Wood ........................................................... 14.8 19.4 18.3 19.8 9.2

 Fuel Oil ........................................................ 9.8 1.3 Q 1.2 25.2

 LPG ............................................................. 8.0 4.4 6.0 3.8 18.2

 Kerosene ..................................................... 3.4 1.0 Q Q 20.8

 Solar ........................................................... 0.7 0.9 Q Q 31.3

Main Heating Fuel

 Natural Gas ................................................. 52.7 58.1 64.6 55.5 3.6

 Electricity ..................................................... 29.2 32.6 26.8 34.9 7.0

 Fuel Oil ........................................................ 9.3 1.1 Q Q 23.8

 LPG ............................................................. 4.5 2.5 4.4 1.7 24.9

 Wood ........................................................... 2.2 3.1 2.8 3.3 18.4

 Kerosene ..................................................... 1.0 Q Q Q 33.0

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

 Other/None .................................................. 1.1 2.3 Q 3.1 18.0

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 Estimates provided by the household interview respondents, who were asked which category best described the total heated floorspace in the home. 3 New construction for 1997 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. 

• Percentages are calculated on unrounded numbers. • 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 1997 Residential Energy Consumption Survey.

Energy Information Administration

A Look at Residential Energy Consumption in 1997