Table HC2.1 Housing Unit Characteristics by Type of Housing Unit, 2005

 Million U.S. Housing Units

Total................................................................... 111.1 72.1 7.6 7.8 16.7 6.9

Census Region and Division

Northeast........................................................ 20.6 11.2 2.3 2.5 4.2 0.4

New England............................................... 5.5 3.2 0.2 0.9 1.0 0.2

Middle Atlantic............................................. 15.1 7.9 2.1 1.6 3.2 0.3

Midwest........................................................... 25.6 18.7 1.5 1.5 3.1 0.8

East North Central....................................... 17.7 12.9 1.2 1.2 2.1 0.4

West North Central...................................... 7.9 5.8 Q 0.4 1.0 0.3

South.............................................................. 40.7 27.2 2.0 1.9 5.8 3.8

South Atlantic.............................................. 21.7 13.4 1.4 1.3 3.6 2.0

East South Central...................................... 6.9 5.2 Q Q 0.6 0.7

West South Central..................................... 12.1 8.5 0.4 0.5 1.6 1.1

West............................................................... 24.2 15.0 1.8 1.8 3.6 2.0

Mountain...................................................... 7.6 5.0 0.6 0.3 0.7 0.9

Pacific......................................................... 16.6 10.0 1.2 1.5 3.0 1.0

Urban/Rural Location (as Self-Reported)

City.................................................................. 47.1 24.3 4.7 5.2 11.1 1.9

Town............................................................... 19.0 12.9 1.2 1.4 2.7 0.8

Suburbs.......................................................... 22.7 17.0 1.5 0.9 2.6 0.6

Rural............................................................... 22.3 17.8 Q 0.3 0.3 3.7

Climate Zone1

Less than 2,000 CDD and--

Greater than 7,000 HDD.............................. 10.9 8.1 0.8 0.4 0.9 0.7

5,500 to 7,000 HDD..................................... 26.1 16.6 2.0 2.3 4.0 1.2

4,000 to 5,499 HDD..................................... 27.3 16.4 2.5 2.3 4.8 1.3

Less than 4,000 HDD.................................. 24.0 15.5 1.6 1.5 3.6 1.8

2000 CDD or More and--

Less than 4,000 HDD.................................. 22.8 15.5 0.7 1.2 3.4 2.0

Ownership of Housing Unit

Owned............................................................. 78.1 64.1 4.2 1.8 2.3 5.7

Rented............................................................ 33.0 8.0 3.4 5.9 14.4 1.2

Year of Construction

Before 1940.................................................... 14.7 9.8 1.0 2.4 1.4 Q

1940 to 1949................................................... 7.4 5.5 0.5 0.5 1.0 N

1950 to 1959................................................... 12.5 10.0 0.7 0.6 1.0 Q

1960 to 1969................................................... 12.5 8.6 0.6 0.8 2.2 0.4

1970 to 1979................................................... 18.9 10.3 1.4 1.2 4.0 2.0

1980 to 1989................................................... 18.6 9.8 2.0 1.3 3.6 1.9

1990 to 1999................................................... 17.3 11.7 0.8 0.7 2.3 1.9

2000 to 2005................................................... 9.2 6.5 0.6 0.3 1.3 0.5

Number of Stories in

Single-Family Homes

1 Story............................................................ 46.7 44.1 2.6 N N N

2 Stories.......................................................... 28.0 24.0 4.0 N N N

3 or More Stories............................................. 2.5 1.7 0.8 N N N

Split-level........................................................ 1.9 1.8 Q N N N

Other............................................................... 0.5 0.4 Q N N N

Not Asked....................................................... 31.4 N N 7.8 16.7 6.9

Type of Housing Unit

Apartments in Buildings 

With--

Housing Unit Characteristics Attached 2 to 4 Units 5 or More 

Units

Mobile 

Homes

Housing 

Units 

(millions)

Single-Family Units

Detached

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC2.1 Housing Unit Characteristics by Type of Housing Unit, 2005

 Million U.S. Housing Units

Type of Housing Unit

Apartments in Buildings 

With--

Housing Unit Characteristics Attached 2 to 4 Units 5 or More 

Units

Mobile 

Homes

Housing 

Units 

(millions)

Single-Family Units

Detached

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors.................................................... 8.2 N N N 8.2 N

3 or 4 Floors.................................................... 6.0 N N N 6.0 N

5 to 10 Floors.................................................. 1.6 N N N 1.6 N

11 to 20 Floors................................................ 0.6 N N N 0.6 N

More than 20 Floors........................................ Q N N N Q N

Not Asked....................................................... 94.4 72.1 7.6 7.8 N 6.9

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel)....................... 35.3 24.2 1.7 1.6 1.9 6.0

Brick................................................................ 31.3 17.5 2.8 2.8 8.2 N

Wood.............................................................. 20.0 14.6 1.2 1.4 2.0 0.8

Stucco............................................................. 14.8 9.4 1.1 1.2 3.1 N

Concrete/Concrete Block................................ 5.3 3.2 Q 0.6 1.3 Q

Composition (Shingle)..................................... 1.9 1.6 QQQQ

Stone.............................................................. 1.0 0.6 Q Q Q N

Other............................................................... 1.5 1.0 QQQQ

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement........................................................ 35.5 30.2 3.8 1.5 N N

Crawlspace..................................................... 25.1 23.1 1.1 0.8 N N

Concrete Slab................................................. 40.2 33.0 3.6 3.6 N N

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units)................................... 23.7 N N N 16.7 6.9

Fuels Used for Any Use

(more than one may apply)

Electricity........................................................ 111.1 72.1 7.6 7.8 16.7 6.9

Natural Gas..................................................... 69.5 46.5 5.7 5.6 9.5 2.1

Wood.............................................................. 14.4 13.0 0.4 Q Q 0.7

Fuel Oil........................................................... 8.4 6.0 0.4 0.8 1.0 0.2

LPG................................................................. 12.6 9.9 Q Q 0.4 1.9

Kerosene......................................................... 1.7 1.2 Q N Q 0.4

Solar............................................................... 0.2 0.2 N N Q N

Main Heating Fuel

Natural Gas..................................................... 58.2 39.8 4.9 4.4 7.2 1.9

Electricity........................................................ 33.7 18.7 2.1 2.3 7.7 2.9

Fuel Oil........................................................... 7.7 5.5 0.4 0.8 0.9 0.2

LPG................................................................. 6.0 4.6 Q Q Q 1.3

Wood.............................................................. 2.9 2.5 Q Q Q 0.3

Kerosene......................................................... 0.7 0.4 Q N Q 0.3

Solar............................................................... Q Q NNNN

Other............................................................... Q N N Q Q N

None............................................................... 1.3 0.4 Q Q 0.5 Q

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC2.1 Housing Unit Characteristics by Type of Housing Unit, 2005

 Million U.S. Housing Units

Type of Housing Unit

Apartments in Buildings 

With--

Housing Unit Characteristics Attached 2 to 4 Units 5 or More 

Units

Mobile 

Homes

Housing 

Units 

(millions)

Single-Family Units

Detached

Natural Gas Available

in Neighborhood

Yes................................................................. 80.5 52.4 6.5 6.3 12.8 2.6

Actually Use Natural Gas............................. 69.5 46.5 5.7 5.6 9.5 2.1

Do Not Use Natural Gas.............................. 11.1 5.9 0.8 0.7 3.2 0.4

No................................................................... 30.6 19.7 1.1 1.4 4.0 4.4

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and cooling 

degree-days. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby 

weather station.

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

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total.............................................................. 111.1 78.1 64.1 4.2 1.8 2.3 5.7

Census Region and Division

Northeast.................................................... 20.6 13.4 10.4 1.4 1.0 0.3 0.4

New England........................................... 5.5 3.8 3.1 Q 0.3 Q Q

Middle Atlantic........................................ 15.1 9.6 7.3 1.3 0.6 Q Q

Midwest...................................................... 25.6 19.4 16.9 1.0 0.5 0.4 0.7

East North Central.................................. 17.7 13.6 11.7 0.7 0.5 Q 0.3

West North Central................................. 7.9 5.8 5.2 Q Q Q 0.3

South.......................................................... 40.7 28.9 23.8 0.8 Q 0.9 3.1

South Atlantic.......................................... 21.7 15.3 12.0 0.6 Q 0.9 1.5

East South Central.................................. 6.9 5.3 4.6 Q N N 0.7

West South Central................................. 12.1 8.3 7.2 Q N Q 0.9

West........................................................... 24.2 16.4 13.0 1.0 Q 0.7 1.6

Mountain................................................. 7.6 5.8 4.4 Q Q Q 0.8

Pacific..................................................... 16.6 10.6 8.7 0.5 Q 0.6 0.8

Urban/Rural Location (as Self-Reported)

City............................................................. 47.1 28.0 21.1 2.6 1.2 1.6 1.6

Town........................................................... 19.0 12.7 10.9 0.5 0.3 0.3 0.6

Suburbs...................................................... 22.7 18.1 16.0 0.9 0.3 0.4 0.5

Rural........................................................... 22.3 19.3 16.0 Q Q Q 3.1

Climate Zone1

Less than 2,000 CDD and--

Greater than 7,000 HDD......................... 10.9 8.6 7.2 Q Q Q 0.5

5,500 to 7,000 HDD................................ 26.1 18.5 15.0 1.2 0.8 0.4 1.1

4,000 to 5,499 HDD................................ 27.3 18.4 14.9 1.4 0.6 0.5 1.0

Less than 4,000 HDD.............................. 24.0 16.4 13.5 0.6 Q 0.7 1.5

2000 CDD or More and--

Less than 4,000 HDD.............................. 22.8 16.3 13.4 0.3 Q 0.6 1.7

Year of Construction

1939 or Before............................................ 14.7 9.6 8.1 0.8 0.6 Q Q

1940 to 1949............................................... 7.4 5.3 4.8 0.3 Q Q N

1950 to 1959............................................... 12.5 9.4 8.7 0.3 Q N Q

1960 to 1969............................................... 12.5 8.4 7.4 Q Q 0.3 0.4

1970 to 1979............................................... 18.9 12.3 9.1 0.7 Q 0.8 1.5

1980 to 1989............................................... 18.6 12.3 8.9 0.9 Q 0.7 1.5

1990 to 1999............................................... 17.3 13.7 11.1 0.5 Q Q 1.7

2000 to 2005............................................... 9.2 7.1 6.0 0.4 Q Q 0.4

Number of Stories

Single-Family Homes

1 Story.................................................... 46.7 39.2 38.3 0.9 N N N

2 Stories................................................. 28.0 24.5 21.9 2.6 N N N

3 or More Stories.................................... 2.5 2.2 1.7 0.6 N N N

Split-level................................................ 1.9 1.8 1.7 Q N N N

Other....................................................... 0.5 0.5 0.4 Q N N N

Not Asked............................................... 31.4 9.9 N N 1.8 2.3 5.7

Table HC3.1 Housing Unit Characteristics by Owner-Occupied Housing Unit, 2005

 Million Housing Units

Type of Owner-Occupied Housing Unit

Single-Family Units Apartments in Buildings 

With--

U.S.

Housing 

Units 

Housing Unit Characteristics Detached Attached (millions Mobile 

Homes

 OwnerOccupied 

Housing 

Units 

(millions) 2 to 4 Units 5 or More 

Units

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC3.1 Housing Unit Characteristics by Owner-Occupied Housing Unit, 2005

 Million Housing Units

Type of Owner-Occupied Housing Unit

Single-Family Units Apartments in Buildings 

With--

U.S.

Housing 

Units 

Housing Unit Characteristics Detached Attached (millions Mobile 

Homes

 OwnerOccupied 

Housing 

Units 

(millions) 2 to 4 Units 5 or More 

Units

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors............................................... 8.2 0.9 N N N 0.9 N

3 or 4 Floors............................................... 6.0 0.9 N N N 0.9 N

5 to 10 Floors............................................. 1.6 Q N N N Q N

11 to 20 Floors............................................ 0.6 Q N N N Q N

More than 20 Floors.................................... Q Q N N N Q N

Not Asked................................................... 94.4 75.8 64.1 4.2 1.8 N 5.7

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel).................. 35.3 28.2 21.4 1.0 0.6 Q 5.0

Brick........................................................... 31.3 19.2 16.2 1.5 0.5 0.9 N

Wood.......................................................... 20.0 14.5 12.8 0.7 0.3 Q 0.6

Stucco........................................................ 14.8 9.4 7.9 0.6 Q 0.7 N

Concrete/Concrete Block............................ 5.3 3.3 2.8 QQQQ

Composition (Shingle)................................ 1.9 1.5 1.4 Q Q N Q

Stone.......................................................... 1.0 0.7 0.6 Q N N N

Other.......................................................... 1.5 1.4 1.0 QQQQ

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement................................................... 35.5 30.9 27.5 2.4 1.0 N N

Crawlspace................................................. 25.1 20.9 20.3 0.6 Q N N

Concrete Slab............................................. 40.2 31.8 29.5 1.7 0.6 N N

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units).............................. 23.7 8.0 N N N 2.3 5.7

Fuels Used for Any Use

(more than one may apply)

Electricity.................................................... 111.1 78.1 64.1 4.2 1.8 2.3 5.7

Natural Gas................................................ 69.5 48.8 41.3 3.2 1.5 1.0 1.8

Wood.......................................................... 14.4 13.3 12.3 0.3 Q Q 0.6

Fuel Oil....................................................... 8.4 6.4 5.5 0.3 0.3 Q 0.2

LPG............................................................ 12.6 11.1 9.2 Q Q Q 1.7

Kerosene.................................................... 1.7 1.4 1.0 Q N N 0.3

Solar........................................................... 0.2 0.2 0.2 NNNN

Main Space Heating Fuel

Natural Gas................................................ 58.2 41.8 35.3 2.8 1.2 1.0 1.6

Electricity.................................................... 33.7 21.3 16.5 0.9 0.3 1.1 2.4

Fuel Oil....................................................... 7.7 5.8 5.0 0.3 0.3 Q Q

LPG............................................................ 6.0 5.2 4.1 Q N Q 1.0

Wood.......................................................... 2.9 2.6 2.3 Q N N Q

Kerosene.................................................... 0.7 0.5 Q Q N N Q

Solar........................................................... Q Q Q NNNN

Other.......................................................... Q NNNNNN

None........................................................... 1.3 0.6 0.3 N Q Q Q

Natural Gas Available

in Neighborhood

Yes............................................................. 80.5 55.2 46.3 3.7 1.6 1.5 2.1

Actually Use Natural Gas........................ 69.5 48.8 41.3 3.2 1.5 1.0 1.8

Do Not Use Natural Gas......................... 11.1 6.4 5.1 0.5 Q 0.4 0.3

No............................................................... 30.6 22.9 17.7 0.5 Q 0.8 3.7

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC3.1 Housing Unit Characteristics by Owner-Occupied Housing Unit, 2005

 Million Housing Units

Type of Owner-Occupied Housing Unit

Single-Family Units Apartments in Buildings 

With--

U.S.

Housing 

Units 

Housing Unit Characteristics Detached Attached (millions Mobile 

Homes

 OwnerOccupied 

Housing 

Units 

(millions) 2 to 4 Units 5 or More 

Units

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and cooling 

degree-days. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby 

weather station.

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

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total.............................................................. 111.1 33.0 8.0 3.4 5.9 14.4 1.2

Census Region and Division

Northeast.................................................... 20.6 7.2 0.8 0.9 1.6 3.8 Q

New England........................................... 5.5 1.7 0.2 Q 0.6 0.9 Q

Middle Atlantic........................................ 15.1 5.5 0.7 0.9 1.0 2.9 Q

Midwest...................................................... 25.6 6.2 1.8 0.5 1.0 2.7 Q

East North Central.................................. 17.7 4.2 1.2 0.4 0.7 1.8 Q

West North Central................................. 7.9 2.0 0.6 Q 0.3 1.0 N

South.......................................................... 40.7 11.8 3.4 1.1 1.7 4.9 0.7

South Atlantic.......................................... 21.7 6.4 1.4 0.8 1.1 2.7 0.4

East South Central.................................. 6.9 1.6 0.6 Q Q 0.6 Q

West South Central................................. 12.1 3.8 1.3 Q 0.5 1.6 Q

West........................................................... 24.2 7.8 2.0 0.8 1.7 3.0 0.3

Mountain................................................. 7.6 1.8 0.7 Q 0.3 0.6 Q

Pacific..................................................... 16.6 6.0 1.3 0.7 1.4 2.4 0.2

Urban/Rural Location (as Self-Reported)

City............................................................. 47.1 19.1 3.2 2.1 4.0 9.5 0.3

Town........................................................... 19.0 6.3 2.0 0.7 1.1 2.4 Q

Suburbs...................................................... 22.7 4.5 1.0 0.6 0.6 2.2 Q

Rural........................................................... 22.3 3.1 1.8 Q Q 0.3 0.7

Climate Zone1

Less than 2,000 CDD and--

Greater than 7,000 HDD......................... 10.9 2.3 0.8 0.3 0.3 0.8 Q

5,500 to 7,000 HDD................................ 26.1 7.6 1.6 0.7 1.5 3.6 Q

4,000 to 5,499 HDD................................ 27.3 8.9 1.5 1.1 1.7 4.3 0.3

Less than 4,000 HDD.............................. 24.0 7.6 2.0 0.9 1.4 2.9 0.4

2000 CDD or More and--

Less than 4,000 HDD.............................. 22.8 6.5 2.1 0.4 1.0 2.8 Q

Year of Construction

1939 or Before............................................ 14.7 5.1 1.7 0.3 1.8 1.3 Q

1940 to 1949............................................... 7.4 2.1 0.7 Q 0.3 0.9 N

1950 to 1959............................................... 12.5 3.1 1.3 0.4 0.3 1.0 Q

1960 to 1969............................................... 12.5 4.0 1.2 0.4 0.6 1.8 Q

1970 to 1979............................................... 18.9 6.5 1.1 0.7 1.0 3.2 0.5

1980 to 1989............................................... 18.6 6.3 0.9 1.0 1.1 2.8 0.4

1990 to 1999............................................... 17.3 3.6 0.6 0.3 0.5 2.1 Q

2000 to 2005............................................... 9.2 2.2 0.5 Q Q 1.2 Q

Number of Stories

Single-Family Homes

1 Story.................................................... 46.7 7.5 5.7 1.8 N N N

2 Stories................................................. 28.0 3.5 2.1 1.5 N N N

3 or More Stories.................................... 2.5 0.3 Q 0.2 N N N

Split-level................................................ 1.9 Q Q NNNN

Other....................................................... 0.5 NNNNNN

Not Asked............................................... 31.4 21.5 N N 5.9 14.4 1.2

 RenterOccupied 

Housing 

Units 

(millions) 2 to 4 Units 5 or More 

Units

Table HC4.1 Housing Unit Characteristics by Renter-Occupied Housing Unit, 2005

 Million Housing Units

Type of Renter-Occupied Housing Unit

Single-Family Units Apartments in Buildings 

With--

U.S.

Housing 

Units 

Housing Unit Characteristics Detached Attached (millions Mobile 

Homes

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
 RenterOccupied 

Housing 

Units 

(millions) 2 to 4 Units 5 or More 

Units

Table HC4.1 Housing Unit Characteristics by Renter-Occupied Housing Unit, 2005

 Million Housing Units

Type of Renter-Occupied Housing Unit

Single-Family Units Apartments in Buildings 

With--

U.S.

Housing 

Units 

Housing Unit Characteristics Detached Attached (millions Mobile 

Homes

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors............................................... 8.2 7.3 N N N 7.3 N

3 or 4 Floors............................................... 6.0 5.1 N N N 5.1 N

5 to 10 Floors............................................. 1.6 1.3 N N N 1.3 N

11 to 20 Floors............................................ 0.6 0.5 N N N 0.5 N

More than 20 Floors.................................... Q Q N N N Q N

Not Asked................................................... 94.4 18.5 8.0 3.4 5.9 N 1.2

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel).................. 35.3 7.1 2.8 0.7 0.9 1.7 1.0

Brick........................................................... 31.3 12.1 1.3 1.3 2.3 7.4 N

Wood.......................................................... 20.0 5.5 1.8 0.6 1.1 1.9 Q

Stucco........................................................ 14.8 5.4 1.5 0.5 1.0 2.4 N

Concrete/Concrete Block............................ 5.3 2.0 0.4 Q 0.5 1.0 N

Composition (Shingle)................................ 1.9 0.4 0.2 Q Q Q N

Stone.......................................................... 1.0 0.2 QQQQN

Other.......................................................... 1.5 QQQQQQ

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement................................................... 35.5 4.5 2.7 1.3 0.6 N N

Crawlspace................................................. 25.1 4.1 2.9 0.6 0.7 N N

Concrete Slab............................................. 40.2 8.4 3.5 1.9 3.0 N N

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units).............................. 23.7 15.6 N N N 14.4 1.2

Fuels Used for Any Use

(more than one may apply)

Electricity.................................................... 111.1 33.0 8.0 3.4 5.9 14.4 1.2

Natural Gas................................................ 69.5 20.7 5.2 2.5 4.2 8.5 0.4

Wood.......................................................... 14.4 1.1 0.8 QQQQ

Fuel Oil....................................................... 8.4 2.1 0.5 Q 0.6 0.9 Q

LPG............................................................ 12.6 1.5 0.7 Q Q 0.4 0.2

Kerosene.................................................... 1.7 0.3 Q N N Q Q

Solar........................................................... 0.2 Q N N N Q N

Main Space Heating Fuel

Natural Gas................................................ 58.2 16.4 4.5 2.1 3.2 6.2 0.3

Electricity.................................................... 33.7 12.4 2.2 1.1 1.9 6.6 0.5

Fuel Oil....................................................... 7.7 1.9 0.5 Q 0.5 0.8 Q

LPG............................................................ 6.0 0.8 0.5 N Q Q 0.2

Wood.......................................................... 2.9 0.3 Q N Q Q Q

Kerosene.................................................... 0.7 Q Q N N Q Q

Solar........................................................... Q NNNNNN

Other.......................................................... Q Q N N Q Q N

None........................................................... 1.3 0.6 Q Q Q 0.3 Q

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
 RenterOccupied 

Housing 

Units 

(millions) 2 to 4 Units 5 or More 

Units

Table HC4.1 Housing Unit Characteristics by Renter-Occupied Housing Unit, 2005

 Million Housing Units

Type of Renter-Occupied Housing Unit

Single-Family Units Apartments in Buildings 

With--

U.S.

Housing 

Units 

Housing Unit Characteristics Detached Attached (millions Mobile 

Homes

Natural Gas Available

in Neighborhood

Yes............................................................. 80.5 25.3 6.0 2.8 4.7 11.3 0.5

Actually Use Natural Gas........................ 69.5 20.7 5.2 2.5 4.2 8.5 0.4

Do Not Use Natural Gas......................... 11.1 4.7 0.9 0.3 0.6 2.8 Q

No............................................................... 30.6 7.6 2.0 0.6 1.2 3.1 0.7

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and cooling 

degree-days. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby 

weather station.

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

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total............................................................. 111.1 14.7 7.4 12.5 12.5 18.9 18.6 17.3 9.2

Census Region and Division

Northeast.................................................. 20.6 5.6 1.8 3.3 2.4 2.7 2.3 1.5 0.9

New England......................................... 5.5 1.9 0.4 0.7 0.6 0.6 0.6 0.4 0.3

Middle Atlantic....................................... 15.1 3.8 1.4 2.6 1.9 2.1 1.7 1.1 0.6

Midwest..................................................... 25.6 4.1 2.3 3.2 3.2 4.0 2.8 4.1 1.8

East North Central................................. 17.7 3.0 1.8 2.1 2.2 3.0 2.1 2.4 1.2

West North Central................................ 7.9 1.1 0.5 1.1 1.0 1.0 0.8 1.7 0.7

South........................................................ 40.7 2.8 1.7 3.5 4.2 7.1 8.4 8.3 4.8

South Atlantic........................................ 21.7 1.4 0.8 1.6 2.2 3.8 4.7 4.8 2.4

East South Central................................ 6.9 0.7 0.2 0.7 0.8 1.0 1.2 1.5 0.8

West South Central............................... 12.1 0.6 0.7 1.3 1.3 2.3 2.5 2.0 1.5

West......................................................... 24.2 2.2 1.6 2.5 2.6 5.0 5.1 3.4 1.7

Mountain............................................... 7.6 0.5 Q 0.6 0.8 1.4 1.7 1.4 1.0

Pacific................................................... 16.6 1.7 1.4 1.9 1.8 3.6 3.4 2.0 0.7

Urban/Rural Location (as Self-Reported)

City........................................................... 47.1 7.3 4.2 5.8 5.9 8.4 7.2 5.2 3.1

Town......................................................... 19.0 3.3 1.3 2.7 2.3 2.9 2.7 2.4 1.5

Suburbs.................................................... 22.7 1.4 1.1 2.3 2.3 3.6 4.7 4.7 2.5

Rural......................................................... 22.3 2.6 0.8 1.7 2.0 4.1 4.0 5.0 2.2

Climate Zone1

Less than 2,000 CDD and--

Greater than 7,000 HDD........................ 10.9 2.0 0.4 1.1 1.0 2.0 1.6 1.8 1.2

5,500 to 7,000 HDD............................... 26.1 5.4 2.3 3.6 2.8 4.1 2.9 3.2 1.8

4,000 to 5,499 HDD............................... 27.3 4.8 2.0 3.2 3.5 3.7 4.3 4.4 1.2

Less than 4,000 HDD............................ 24.0 1.7 1.8 2.6 2.5 4.7 5.1 3.7 1.9

2000 CDD or More and--

Less than 4,000 HDD............................ 22.8 0.9 0.9 2.0 2.7 4.4 4.6 4.3 3.1

Type of Housing Unit

Single-Family Detached........................ 72.1 9.8 5.5 10.0 8.6 10.3 9.8 11.7 6.5

Single-Family Attached......................... 7.6 1.0 0.5 0.7 0.6 1.4 2.0 0.8 0.6

Apartments in 2-4 Unit Buildings........... 7.8 2.4 0.5 0.6 0.8 1.2 1.3 0.7 0.3

Apartments in 5 or More Unit Buildings. 16.7 1.4 1.0 1.0 2.2 4.0 3.6 2.3 1.3

Mobile Homes....................................... 6.9 Q N Q 0.4 2.0 1.9 1.9 0.5

Ownership of Housing Unit

Owned...................................................... 78.1 9.6 5.3 9.4 8.4 12.3 12.3 13.7 7.1

Single-Family Detached........................ 64.1 8.1 4.8 8.7 7.4 9.1 8.9 11.1 6.0

Single-Family Attached......................... 4.2 0.8 0.3 0.3 Q 0.7 0.9 0.5 0.4

Apartments in 2-4 Unit Buildings........... 1.8 0.6 QQQQQQQ

Apartments in 5 or More Unit Buildings. 2.3 Q Q N 0.3 0.8 0.7 Q Q

Mobile Homes....................................... 5.7 Q N Q 0.4 1.5 1.5 1.7 0.4

Rented..................................................... 33.0 5.1 2.1 3.1 4.0 6.5 6.3 3.6 2.2

Single-Family Detached........................ 8.0 1.7 0.7 1.3 1.2 1.1 0.9 0.6 0.5

Single-Family Attached......................... 3.4 0.3 Q 0.4 0.4 0.7 1.0 0.3 Q

Apartments in 2-4 Unit Buildings........... 5.9 1.8 0.3 0.3 0.6 1.0 1.1 0.5 Q

Apartments in 5 or More Unit Buildings. 14.4 1.3 0.9 1.0 1.8 3.2 2.8 2.1 1.2

Mobile Homes....................................... 1.2 Q N Q Q 0.5 0.4 Q Q

Table HC5.1 Housing Unit Characteristics by Year of Construction, 2005

 Million U.S. Housing Units

Housing Unit Characteristics

2000 to 

2005

Year of Construction

Before 

1940

1940 to 

1949

1960 to 

1969

1970 to 

1979

Housing 

Units 

(millions)

1950 to 

1959

1980 to 

1989

1990 to 

1999

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC5.1 Housing Unit Characteristics by Year of Construction, 2005

 Million U.S. Housing Units

Housing Unit Characteristics

2000 to 

2005

Year of Construction

Before 

1940

1940 to 

1949

1960 to 

1969

1970 to 

1979

Housing 

Units 

(millions)

1950 to 

1959

1980 to 

1989

1990 to 

1999

Number of Stories in

Single-Family Homes

1 Story...................................................... 46.7 3.8 3.8 8.0 6.8 7.7 6.6 6.6 3.5

2 Stories................................................... 28.0 6.2 1.9 2.3 1.8 3.2 4.4 5.1 3.2

3 or More Stories...................................... 2.5 0.6 Q 0.2 0.3 0.2 0.4 0.5 Q

Split-level.................................................. 1.9 Q Q Q 0.3 0.5 0.4 0.3 Q

Other......................................................... 0.5 QQQQQQQN

Not Asked................................................. 31.4 3.9 1.4 1.8 3.3 7.2 6.8 4.9 2.1

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors.............................................. 8.2 0.4 Q 0.5 1.1 2.4 1.9 1.2 0.6

3 or 4 Floors.............................................. 6.0 0.6 0.4 0.3 0.6 1.4 1.2 0.9 0.6

5 to 10 Floors............................................ 1.6 0.4 0.3 QQQQQQ

11 to 20 Floors.......................................... 0.6 N QQQQQQN

More than 20 Floors.................................. Q N N Q Q N Q N Q

Not Asked................................................. 94.4 13.3 6.5 11.5 10.3 14.9 15.0 15.0 7.9

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel)................. 35.3 4.6 2.0 4.0 2.9 5.7 5.6 7.1 3.6

Brick......................................................... 31.3 3.5 2.5 3.5 4.7 5.7 4.6 4.5 2.3

Wood........................................................ 20.0 4.1 1.1 2.0 2.1 3.2 3.9 2.7 1.0

Stucco....................................................... 14.8 1.3 1.1 1.6 1.5 2.7 3.2 2.3 1.2

Concrete/Concrete Block.......................... 5.3 Q Q 0.9 0.8 1.1 0.8 0.5 0.7

Composition (Shingle)............................... 1.9 0.7 Q 0.2 Q 0.2 Q Q Q

Stone........................................................ 1.0 QQQQQQQQ

Other......................................................... 1.5 Q Q Q 0.2 Q 0.3 Q Q

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement................................................. 35.5 8.3 3.2 5.5 3.6 4.1 3.7 4.6 2.5

Crawlspace............................................... 25.1 5.1 2.5 3.8 3.2 3.3 2.9 3.1 1.2

Concrete Slab........................................... 40.2 2.7 2.1 4.2 4.8 7.0 7.7 7.0 4.7

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units)............................ 23.7 1.4 1.0 1.2 2.5 6.0 5.5 4.2 1.8

Fuels Used for Any Use

(more than one may apply)

Electricity.................................................. 111.1 14.7 7.4 12.5 12.5 18.9 18.6 17.3 9.2

Natural Gas............................................... 69.5 10.9 5.8 9.2 8.5 10.5 10.2 9.3 5.2

Wood........................................................ 14.4 2.2 0.8 1.1 1.5 2.6 2.9 2.8 0.7

Fuel Oil..................................................... 8.4 2.8 1.0 1.5 1.0 1.0 0.5 0.4 0.2

LPG.......................................................... 12.6 1.8 0.7 0.8 1.0 1.8 2.3 2.7 1.4

Kerosene.................................................. 1.7 0.3 Q Q Q 0.4 0.3 Q Q

Solar......................................................... 0.2 N N N QQQQQ

Main Heating Fuel

Natural Gas............................................... 58.2 9.2 4.9 7.8 7.1 8.8 8.4 7.8 4.2

Electricity.................................................. 33.7 1.2 0.9 2.4 3.3 6.9 7.8 7.3 4.0

Fuel Oil..................................................... 7.7 2.6 0.9 1.4 0.9 0.9 0.4 0.3 0.2

LPG.......................................................... 6.0 0.8 0.5 0.4 0.3 0.9 1.1 1.4 0.7

Wood........................................................ 2.9 0.7 Q 0.3 0.4 0.7 0.4 0.3 Q

Kerosene.................................................. 0.7 Q N QQQQQN

Solar......................................................... Q NNNNNNNQ

Other......................................................... Q N Q Q Q N Q N N

None......................................................... 1.3 N Q Q 0.2 0.4 0.3 0.2 Q

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC5.1 Housing Unit Characteristics by Year of Construction, 2005

 Million U.S. Housing Units

Housing Unit Characteristics

2000 to 

2005

Year of Construction

Before 

1940

1940 to 

1949

1960 to 

1969

1970 to 

1979

Housing 

Units 

(millions)

1950 to 

1959

1980 to 

1989

1990 to 

1999

Natural Gas Available

in Neighborhood

Yes........................................................... 80.5 12.0 6.4 10.4 9.9 12.8 12.1 10.9 6.0

Actually Use Natural Gas...................... 69.5 10.9 5.8 9.2 8.5 10.5 10.2 9.3 5.2

Do Not Use Natural Gas........................ 11.1 1.1 0.6 1.2 1.4 2.4 2.0 1.6 0.8

No............................................................. 30.6 2.7 1.0 2.1 2.5 6.1 6.5 6.4 3.3

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and cooling degreedays. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather 

station.

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

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total......................................................................... 111.1 30.0 34.8 18.4 15.9 12.0

Census Region and Division

Northeast.............................................................. 20.6 5.5 6.5 3.4 3.0 2.1

New England..................................................... 5.5 1.7 1.7 1.1 0.7 0.3

Middle Atlantic................................................... 15.1 3.8 4.8 2.4 2.4 1.7

Midwest................................................................. 25.6 7.3 8.4 4.1 3.2 2.5

East North Central............................................. 17.7 5.0 5.7 3.0 2.2 1.9

West North Central............................................ 7.9 2.3 2.7 1.1 1.0 0.7

South.................................................................... 40.7 11.5 12.5 7.0 5.6 4.1

South Atlantic.................................................... 21.7 6.2 6.5 4.0 2.9 2.0

East South Central............................................ 6.9 2.1 2.1 1.1 1.2 0.5

West South Central........................................... 12.1 3.2 3.9 1.8 1.5 1.6

West..................................................................... 24.2 5.7 7.4 3.9 4.0 3.2

Mountain........................................................... 7.6 1.5 2.9 1.2 1.1 0.9

Pacific............................................................... 16.6 4.2 4.5 2.7 2.9 2.3

Urban/Rural Location (as Self-Reported)

City....................................................................... 47.1 14.7 12.8 7.6 6.8 5.2

Town..................................................................... 19.0 5.1 6.1 3.0 2.6 2.2

Suburbs................................................................ 22.7 5.1 7.5 3.8 3.3 2.9

Rural..................................................................... 22.3 5.1 8.5 3.9 3.1 1.8

Climate Zone1

Less than 2,000 CDD and--

Greater than 7,000 HDD.................................... 10.9 2.6 4.3 1.8 1.2 1.0

5,500 to 7,000 HDD........................................... 26.1 7.9 7.7 4.2 3.7 2.6

4,000 to 5,499 HDD........................................... 27.3 7.3 8.2 4.8 4.0 3.0

Less than 4,000 HDD........................................ 24.0 6.5 7.1 3.9 3.9 2.5

2000 CDD or More and--

Less than 4,000 HDD........................................ 22.8 5.8 7.5 3.7 2.9 2.8

Type of Housing Unit

Single-Family Detached.................................... 72.1 14.8 24.8 12.3 11.1 9.2

Single-Family Attached...................................... 7.6 2.4 2.1 1.2 1.2 0.6

Apartments in 2-4 Unit Buildings....................... 7.8 2.6 2.0 1.6 0.9 0.7

Apartments in 5 or More Unit Buildings............. 16.7 7.9 4.2 2.2 1.6 0.8

Mobile Homes................................................... 6.9 2.4 1.7 1.2 1.0 0.7

Ownership of Hosuing Unit

Owned.................................................................. 78.1 18.6 26.8 12.8 11.5 8.3

Single-Family Detached.................................... 64.1 13.2 22.9 10.7 9.8 7.4

Single-Family Attached...................................... 4.2 1.4 1.3 0.5 0.6 0.3

Apartments in 2-4 Unit Buildings....................... 1.8 0.7 0.5 0.4 Q Q

Apartments in 5 or More Unit Buildings............. 2.3 1.3 0.7 Q Q Q

Mobile Homes................................................... 5.7 2.1 1.4 1.0 0.9 0.4

Rented.................................................................. 33.0 11.4 8.0 5.6 4.3 3.7

Single-Family Detached.................................... 8.0 1.6 1.9 1.5 1.3 1.7

Single-Family Attached...................................... 3.4 1.0 0.8 0.7 0.6 0.3

Apartments in 2-4 Unit Buildings....................... 5.9 1.9 1.5 1.2 0.7 0.6

Apartments in 5 or More Unit Buildings............. 14.4 6.6 3.5 1.9 1.6 0.8

Mobile Homes................................................... 1.2 0.3 0.3 0.2 Q Q

Housing 

Units 

(millions)

Number of Households With --

3

 Members

Table HC6.1 Housing Unit Characteristics by Number of Household Members, 2005

 Million U.S. Housing Units

Housing Unit Characteristics

1

 Member

2

 Members

4

 Members

5 or More 

Members

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Housing 

Units 

(millions)

Number of Households With --

3

 Members

Table HC6.1 Housing Unit Characteristics by Number of Household Members, 2005

 Million U.S. Housing Units

Housing Unit Characteristics

1

 Member

2

 Members

4

 Members

5 or More 

Members

Year of Construction

Before 1940.......................................................... 14.7 4.6 4.3 2.5 1.9 1.3

1940 to 1949......................................................... 7.4 2.5 1.9 1.3 0.8 0.8

1950 to 1959......................................................... 12.5 3.7 4.4 1.7 1.5 1.2

1960 to 1969......................................................... 12.5 3.2 4.1 1.9 1.6 1.7

1970 to 1979......................................................... 18.9 5.4 5.9 2.9 3.0 1.7

1980 to 1989......................................................... 18.6 5.5 5.3 3.5 2.5 1.8

1990 to 1999......................................................... 17.3 3.7 5.5 2.8 3.1 2.3

2000 to 2005......................................................... 9.2 1.6 3.4 1.6 1.4 1.2

Number of Stories in

Single-Family Homes

1 Story.................................................................. 46.7 11.7 17.3 7.0 5.9 4.9

2 Stories................................................................ 28.0 5.0 8.0 5.5 5.4 4.2

3 or More Stories.................................................. 2.5 0.2 0.8 0.5 0.5 0.5

Split-level.............................................................. 1.9 Q 0.7 0.4 0.4 0.3

Other..................................................................... 0.5 QQQQN

Not Asked............................................................. 31.4 12.9 8.0 4.9 3.6 2.2

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors.......................................................... 8.2 3.8 2.0 1.1 0.9 0.3

3 or 4 Floors.......................................................... 6.0 2.6 1.6 0.8 0.6 0.4

5 to 10 Floors........................................................ 1.6 0.9 0.5 Q Q Q

11 to 20 Floors...................................................... 0.6 QQQQQ

More than 20 Floors.............................................. Q Q Q N N N

Not Asked............................................................. 94.4 22.2 30.6 16.2 14.2 11.2

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel)............................. 35.3 9.2 10.7 5.7 5.6 4.0

Brick...................................................................... 31.3 9.4 9.9 4.8 4.1 3.1

Wood.................................................................... 20.0 5.5 6.3 3.6 2.4 2.2

Stucco................................................................... 14.8 3.4 4.7 2.4 2.5 1.9

Concrete/Concrete Block...................................... 5.3 1.5 1.8 1.0 0.7 0.4

Composition (Shingle)........................................... 1.9 0.5 0.5 0.5 Q 0.2

Stone.................................................................... 1.0 Q 0.4 Q Q Q

Other..................................................................... 1.5 0.4 0.6 0.3 Q Q

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement.............................................................. 35.5 7.5 11.9 6.2 5.8 4.0

Crawlspace........................................................... 25.1 6.1 8.5 4.5 3.6 2.4

Concrete Slab....................................................... 40.2 8.1 13.1 6.9 6.3 5.7

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units)........................................ 23.7 10.3 5.9 3.3 2.7 1.5

Fuels Used for Any Use

(more than one may apply)

Electricity.............................................................. 111.1 30.0 34.8 18.4 15.9 12.0

Natural Gas........................................................... 69.5 18.3 21.1 11.5 10.3 8.3

Wood.................................................................... 14.4 2.6 5.3 2.9 2.5 1.2

Fuel Oil................................................................. 8.4 2.1 2.8 1.6 1.1 0.8

LPG...................................................................... 12.6 2.7 4.7 2.0 2.0 1.3

Kerosene.............................................................. 1.7 0.6 0.4 0.3 Q Q

Solar..................................................................... 0.2 N Q Q Q N

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Housing 

Units 

(millions)

Number of Households With --

3

 Members

Table HC6.1 Housing Unit Characteristics by Number of Household Members, 2005

 Million U.S. Housing Units

Housing Unit Characteristics

1

 Member

2

 Members

4

 Members

5 or More 

Members

Main Heating Fuel

Natural Gas........................................................... 58.2 15.6 18.0 9.5 8.4 6.7

Electricity.............................................................. 33.7 9.9 10.1 5.4 4.7 3.5

Fuel Oil................................................................. 7.7 2.0 2.5 1.6 1.0 0.7

LPG...................................................................... 6.0 1.3 2.5 0.9 0.9 0.5

Wood.................................................................... 2.9 0.4 1.1 0.6 0.5 0.2

Kerosene.............................................................. 0.7 0.4 QQQQ

Solar..................................................................... Q N Q N N N

Other..................................................................... QQQQQN

None..................................................................... 1.3 0.3 0.3 Q 0.3 0.2

Natural Gas Available

in Neighborhood

Yes....................................................................... 80.5 21.9 24.6 13.3 11.2 9.5

Actually Use Natural Gas.................................. 69.5 18.3 21.1 11.5 10.3 8.3

Do Not Use Natural Gas.................................... 11.1 3.7 3.5 1.8 1.0 1.1

No......................................................................... 30.6 8.1 10.2 5.1 4.6 2.5

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) 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.

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

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total............................................................ 111.1 26.7 28.8 20.6 13.1 22.0 16.6 38.6

Census Region and Division

Northeast.................................................. 20.6 4.9 5.4 3.5 2.4 4.3 3.2 8.1

New England......................................... 5.5 1.3 1.3 1.0 0.6 1.2 0.7 2.3

Middle Atlantic...................................... 15.1 3.7 4.1 2.5 1.8 3.1 2.5 5.8

Midwest.................................................... 25.6 6.5 6.6 4.7 3.0 4.8 3.5 9.4

East North Central................................ 17.7 4.7 4.3 3.2 2.2 3.4 2.6 6.8

West North Central............................... 7.9 1.8 2.3 1.5 0.8 1.3 0.9 2.6

South........................................................ 40.7 10.6 11.1 7.8 4.3 6.8 6.5 13.9

South Atlantic........................................ 21.7 5.2 5.7 4.1 2.5 4.3 3.2 7.3

East South Central................................ 6.9 2.1 2.2 1.1 0.7 0.8 1.1 2.1

West South Central............................... 12.1 3.3 3.3 2.6 1.2 1.8 2.2 4.4

West......................................................... 24.2 4.6 5.7 4.5 3.3 6.1 3.4 7.2

Mountain............................................... 7.6 1.3 2.0 1.4 1.0 1.8 0.9 2.1

Pacific................................................... 16.6 3.3 3.7 3.1 2.3 4.2 2.5 5.2

Urban/Rural Location (as Self-Reported)

City........................................................... 47.1 13.8 13.2 8.1 4.5 7.5 8.9 18.9

Town........................................................ 19.0 4.4 5.3 3.8 2.3 3.0 2.6 7.3

Suburbs.................................................... 22.7 2.9 4.3 4.8 3.1 7.5 1.6 4.6

Rural......................................................... 22.3 5.6 6.0 3.7 3.1 3.9 3.5 7.8

Climate Zone1

Less than 2,000 CDD and--

Greater than 7,000 HDD....................... 10.9 2.0 2.5 2.1 1.6 2.8 1.0 3.2

5,500 to 7,000 HDD.............................. 26.1 7.1 7.0 4.7 2.7 4.6 4.2 10.4

4,000 to 5,499 HDD.............................. 27.3 6.5 7.4 4.3 3.4 5.7 4.2 9.8

Less than 4,000 HDD............................ 24.0 5.5 5.5 5.1 2.9 5.0 3.7 7.4

2000 CDD or More and--

Less than 4,000 HDD............................ 22.8 5.6 6.4 4.4 2.5 3.9 3.5 7.8

Type of Housing Unit

Single-Family Detached........................ 72.1 11.5 17.1 15.0 10.3 18.2 6.5 18.5

Single-Family Attached......................... 7.6 1.9 2.0 1.4 0.8 1.4 1.4 3.1

Apartments in 2-4 Unit Buildings........... 7.8 3.1 2.4 1.2 0.5 0.6 2.3 4.2

Apartments in 5 or More Unit Buildings. 16.7 7.2 4.8 2.2 1.1 1.5 4.6 8.9

Mobile Homes....................................... 6.9 3.0 2.5 0.8 0.4 0.3 1.9 3.9

Ownership of Housing Unit

Owned..................................................... 78.1 13.3 18.6 15.8 10.8 19.5 7.5 20.2

Single-Family Detached........................ 64.1 9.1 14.6 13.5 9.4 17.5 4.9 14.6

Single-Family Attached......................... 4.2 0.6 1.1 0.9 0.5 1.0 0.4 1.1

Apartments in 2-4 Unit Buildings........... 1.8 0.6 0.4 0.4 0.2 0.3 0.5 0.7

Apartments in 5 or More Unit Buildings. 2.3 0.5 0.6 0.3 0.3 0.5 0.3 0.7

Mobile Homes....................................... 5.7 2.5 2.0 0.7 0.3 Q 1.5 3.1

Rented..................................................... 33.0 13.4 10.2 4.8 2.2 2.4 9.1 18.4

Single-Family Detached........................ 8.0 2.4 2.5 1.5 0.9 0.7 1.5 3.9

Single-Family Attached......................... 3.4 1.3 0.9 0.5 0.3 0.4 1.0 2.0

Apartments in 2-4 Unit Buildings........... 5.9 2.5 2.0 0.8 0.2 0.3 1.8 3.5

Apartments in 5 or More Unit Buildings. 14.4 6.6 4.2 1.9 0.8 0.9 4.3 8.2

Mobile Homes....................................... 1.2 0.5 0.5 Q Q Q 0.4 0.8

Table HC7.1 Housing Unit Characteristics by Household Income, 2005

 Million U.S. Housing Units

Housing Unit Characteristics

Less than 

$20,000

$20,000 to 

$39,999

$60,000 to 

$79,999

$80,000 or 

More

Housing 

Units 

(millions)

2005 Household Income

$40,000 to 

$59,999

Below 

Poverty 

Line

Eligible for 

Federal 

Assistance1

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC7.1 Housing Unit Characteristics by Household Income, 2005

 Million U.S. Housing Units

Housing Unit Characteristics

Less than 

$20,000

$20,000 to 

$39,999

$60,000 to 

$79,999

$80,000 or 

More

Housing 

Units 

(millions)

2005 Household Income

$40,000 to 

$59,999

Below 

Poverty 

Line

Eligible for 

Federal 

Assistance1

Year of Construction

1939 or Before.......................................... 14.7 4.7 3.8 2.3 1.4 2.5 3.1 6.3

1940 to 1949............................................ 7.4 2.2 2.1 1.5 0.8 0.8 1.6 3.3

1950 to 1959............................................ 12.5 3.4 3.7 2.2 1.4 1.8 2.1 4.8

1960 to 1969............................................ 12.5 3.5 3.7 2.1 1.2 1.9 1.8 5.1

1970 to 1979............................................ 18.9 4.7 5.4 3.5 2.1 3.2 3.0 6.8

1980 to 1989............................................ 18.6 4.1 4.3 3.3 2.6 4.3 2.2 5.7

1990 to 1999............................................ 17.3 3.0 3.7 3.5 2.2 4.9 1.8 4.5

2000 to 2005............................................ 9.2 1.2 2.1 2.1 1.3 2.5 1.0 2.1

Number of Stories in

Single-Family Homes

1 Story...................................................... 46.7 10.2 13.0 10.6 6.5 6.5 5.7 14.7

2 Stories................................................... 28.0 2.9 5.4 4.8 4.0 10.9 1.8 5.8

3 or More Stories...................................... 2.5 Q 0.4 0.3 0.2 1.3 0.3 0.6

Split-level.................................................. 1.9 Q 0.2 0.5 0.2 0.8 Q 0.4

Other........................................................ 0.5 N Q Q Q QN Q

Not Asked................................................. 31.4 13.3 9.7 4.2 2.0 2.3 8.8 17.0

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors............................................. 8.2 3.3 2.6 1.2 0.5 0.5 2.1 4.2

3 or 4 Floors............................................. 6.0 2.6 1.6 0.7 0.4 0.7 1.7 3.2

5 to 10 Floors........................................... 1.6 1.0 0.4 Q N Q 0.6 1.1

11 to 20 Floors......................................... 0.6 Q Q Q Q QQ Q

More than 20 Floors.................................. Q Q Q Q Q QN Q

Not Asked................................................. 94.4 19.6 24.0 18.3 12.0 20.5 12.1 29.7

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel)................ 35.3 8.2 9.9 6.8 4.5 6.0 4.7 12.7

Brick......................................................... 31.3 9.2 7.9 5.5 2.8 5.9 5.7 12.1

Wood........................................................ 20.0 4.6 5.0 3.7 2.2 4.5 3.1 6.5

Stucco...................................................... 14.8 2.3 3.2 2.9 2.4 3.9 1.6 3.6

Concrete/Concrete Block.......................... 5.3 1.3 1.7 0.8 0.6 0.9 0.9 1.9

Composition (Shingle).............................. 1.9 0.6 0.3 0.4 0.3 0.4 0.4 0.8

Stone........................................................ 1.0 Q 0.4 Q Q Q Q 0.3

Other........................................................ 1.5 0.4 0.4 0.3 Q Q 0.3 0.6

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement................................................. 35.5 5.9 7.8 6.9 4.7 10.1 3.3 9.9

Crawlspace............................................... 25.1 5.1 6.4 4.9 3.6 5.0 2.9 7.3

Concrete Slab........................................... 40.2 6.5 9.2 9.0 5.2 10.4 4.2 10.8

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units)............................ 23.7 10.2 7.3 3.0 1.5 1.7 6.5 12.8

Fuels Used for Any Use

(more than one may apply)

Electricity.................................................. 111.1 26.7 28.8 20.6 13.1 22.0 16.6 38.6

Natural Gas.............................................. 69.5 15.5 17.2 13.3 8.0 15.5 9.9 23.1

Wood........................................................ 14.4 2.1 3.1 3.0 1.9 4.3 1.3 3.3

Fuel Oil..................................................... 8.4 2.4 1.9 1.6 1.0 1.7 1.3 3.3

LPG.......................................................... 12.6 2.6 3.0 2.2 1.6 3.1 1.6 3.9

Kerosene.................................................. 1.7 0.8 0.4 Q Q Q 0.4 0.9

Solar......................................................... 0.2 N Q Q Q QN N

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC7.1 Housing Unit Characteristics by Household Income, 2005

 Million U.S. Housing Units

Housing Unit Characteristics

Less than 

$20,000

$20,000 to 

$39,999

$60,000 to 

$79,999

$80,000 or 

More

Housing 

Units 

(millions)

2005 Household Income

$40,000 to 

$59,999

Below 

Poverty 

Line

Eligible for 

Federal 

Assistance1

Main Heating Fuel

Natural Gas.............................................. 58.2 12.2 14.4 11.3 7.1 13.2 7.6 18.3

Electricity.................................................. 33.7 8.9 9.4 6.1 3.7 5.6 5.6 12.5

Fuel Oil..................................................... 7.7 2.2 1.7 1.3 0.9 1.6 1.2 3.0

LPG.......................................................... 6.0 1.4 1.7 1.1 0.9 0.9 0.9 2.0

Wood........................................................ 2.9 0.7 0.9 0.5 0.4 0.4 0.7 1.2

Kerosene.................................................. 0.7 0.5 Q Q N N 0.2 0.6

Solar......................................................... Q N N N N QN N

Other........................................................ Q Q Q Q N QQ Q

None......................................................... 1.3 0.5 0.3 0.2 Q 0.2 0.3 0.7

Natural Gas Available

in Neighborhood

Yes........................................................... 80.5 18.8 20.4 15.0 9.2 17.2 12.0 27.3

Actually Use Natural Gas...................... 69.5 15.5 17.2 13.3 8.0 15.5 9.9 23.1

Do Not Use Natural Gas....................... 11.1 3.3 3.1 1.7 1.2 1.7 2.1 4.2

No............................................................. 30.6 7.9 8.4 5.5 3.9 4.8 4.7 11.3

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and cooling degreedays. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby weather station.

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

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC8.1 Housing Unit Characteristics by Urban/Rural Location, 2005

Total......................................................................... 111.1 47.1 19.0 22.7 22.3

Census Region and Division

Northeast.............................................................. 20.6 6.9 6.0 4.4 3.2

New England..................................................... 5.5 2.2 1.9 0.5 0.9

Middle Atlantic................................................... 15.1 4.7 4.2 4.0 2.3

Midwest................................................................. 25.6 9.7 5.0 5.7 5.2

East North Central............................................. 17.7 7.3 2.9 4.3 3.3

West North Central............................................ 7.9 2.4 2.1 1.4 1.9

South.................................................................... 40.7 17.8 4.9 7.6 10.4

South Atlantic.................................................... 21.7 10.5 2.2 4.1 4.9

East South Central............................................ 6.9 2.2 0.7 1.1 2.9

West South Central........................................... 12.1 5.1 2.0 2.4 2.6

West..................................................................... 24.2 12.8 3.0 4.9 3.5

Mountain........................................................... 7.6 3.2 1.1 1.6 1.7

Pacific............................................................... 16.6 9.6 1.9 3.3 1.9

Climate Zone

Less than 2,000 CDD and--

Greater than 7,000 HDD.................................... 10.9 3.4 2.5 1.4 3.7

5,500 to 7,000 HDD........................................... 26.1 8.9 5.8 6.6 4.8

4,000 to 5,499 HDD........................................... 27.3 11.5 5.2 5.6 5.0

Less than 4,000 HDD........................................ 24.0 11.9 2.4 4.7 5.0

2000 CDD or More and--

Less than 4,000 HDD........................................ 22.8 11.4 3.1 4.4 3.9

Type of Housing Unit

Single-Family Detached.................................... 72.1 24.3 12.9 17.0 17.8

Single-Family Attached...................................... 7.6 4.7 1.2 1.5 Q

Apartments in 2-4 Unit Buildings....................... 7.8 5.2 1.4 0.9 0.3

Apartments in 5 or More Unit Buildings............. 16.7 11.1 2.7 2.6 0.3

Mobile Homes................................................... 6.9 1.9 0.8 0.6 3.7

Ownership of Housing Unit

Owned.................................................................. 78.1 28.0 12.7 18.1 19.3

Single-Family Detached.................................... 64.1 21.1 10.9 16.0 16.0

Single-Family Attached...................................... 4.2 2.6 0.5 0.9 Q

Apartments in 2-4 Unit Buildings....................... 1.8 1.2 0.3 0.3 Q

Apartments in 5 or More Unit Buildings............. 2.3 1.6 0.3 0.4 Q

Mobile Homes................................................... 5.7 1.6 0.6 0.5 3.1

Rented.................................................................. 33.0 19.1 6.3 4.5 3.1

Single-Family Detached.................................... 8.0 3.2 2.0 1.0 1.8

Single-Family Attached...................................... 3.4 2.1 0.7 0.6 Q

Apartments in 2-4 Unit Buildings....................... 5.9 4.0 1.1 0.6 Q

Apartments in 5 or More Unit Buildings............. 14.4 9.5 2.4 2.2 0.3

Mobile Homes................................................... 1.2 0.3 Q Q 0.7

Year of Construction

1939 or Before...................................................... 14.7 7.3 3.3 1.4 2.6

1940 to 1949......................................................... 7.4 4.2 1.3 1.1 0.8

1950 to 1959......................................................... 12.5 5.8 2.7 2.3 1.7

1960 to 1969......................................................... 12.5 5.9 2.3 2.3 2.0

1970 to 1979......................................................... 18.9 8.4 2.9 3.6 4.1

1980 to 1989......................................................... 18.6 7.2 2.7 4.7 4.0

1990 to 1999......................................................... 17.3 5.2 2.4 4.7 5.0

2000 to 2005......................................................... 9.2 3.1 1.5 2.5 2.2

 Million U.S. Housing Units

Urban/Rural Location

(as Self-Reported)

Housing Unit Characteristics City Town Surburbs Rural

Housing

Units 

(millions)

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC8.1 Housing Unit Characteristics by Urban/Rural Location, 2005

 Million U.S. Housing Units

Urban/Rural Location

(as Self-Reported)

Housing Unit Characteristics City Town Surburbs Rural

Housing

Units 

(millions)

Number of Stories in

Single-Family Homes

1 Story.................................................................. 46.7 18.4 8.4 8.2 11.8

2 Stories................................................................ 28.0 9.1 4.9 8.8 5.2

3 or More Stories.................................................. 2.5 1.1 0.4 0.6 0.5

Split-level.............................................................. 1.9 0.3 0.4 0.8 0.4

Other..................................................................... 0.5 QQQQ

Not Asked............................................................. 31.4 18.1 4.8 4.1 4.4

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors.......................................................... 8.2 5.3 1.4 1.3 Q

3 or 4 Floors.......................................................... 6.0 3.5 1.1 1.2 Q

5 to 10 Floors........................................................ 1.6 1.4 Q Q N

11 to 20 Floors...................................................... 0.6 0.6 N Q N

More than 20 Floors.............................................. QQQQN

Not Asked............................................................. 94.4 36.0 16.3 20.0 22.0

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel)............................. 35.3 11.1 6.8 7.1 10.4

Brick...................................................................... 31.3 15.0 4.8 7.6 3.9

Wood.................................................................... 20.0 7.1 4.5 3.0 5.4

Stucco................................................................... 14.8 8.6 1.8 3.3 1.2

Concrete/Concrete Block...................................... 5.3 3.8 0.4 0.7 0.4

Composition (Shingle)........................................... 1.9 0.7 0.4 0.4 0.4

Stone.................................................................... 1.0 0.3 Q 0.3 0.3

Other..................................................................... 1.5 0.5 Q 0.2 0.6

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement.............................................................. 35.5 12.0 7.4 8.7 7.3

Crawlspace........................................................... 25.1 7.5 4.7 4.4 8.4

Concrete Slab....................................................... 40.2 17.9 6.1 10.2 5.9

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units)........................................ 23.7 13.0 3.4 3.2 4.1

Fuels Used for Any Use

(more than one may apply)

Electricity.............................................................. 111.1 47.1 19.0 22.7 22.3

Natural Gas........................................................... 69.5 33.3 13.3 16.9 5.9

Wood.................................................................... 14.4 3.6 1.8 2.5 6.5

Fuel Oil................................................................. 8.4 2.6 1.7 1.4 2.8

LPG...................................................................... 12.6 1.4 1.1 1.6 8.4

Kerosene.............................................................. 1.7 0.3 0.2 0.2 0.9

Solar..................................................................... 0.2 QQQQ

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC8.1 Housing Unit Characteristics by Urban/Rural Location, 2005

 Million U.S. Housing Units

Urban/Rural Location

(as Self-Reported)

Housing Unit Characteristics City Town Surburbs Rural

Housing

Units 

(millions)

Main Heating Fuel

Natural Gas........................................................... 58.2 27.0 11.9 14.9 4.3

Electricity.............................................................. 33.7 15.9 4.6 5.8 7.4

Fuel Oil................................................................. 7.7 2.4 1.7 1.2 2.4

LPG...................................................................... 6.0 0.3 0.2 0.3 5.2

Wood.................................................................... 2.9 0.3 Q Q 2.3

Kerosene.............................................................. 0.7 Q Q Q 0.4

Solar..................................................................... Q N N N Q

Other..................................................................... QQQQN

None..................................................................... 1.3 0.8 Q 0.2 Q

Natural Gas Available

in Neighborhood

Yes....................................................................... 80.5 38.6 15.4 18.8 7.7

Actually Use Natural Gas.................................. 69.5 33.3 13.3 16.9 5.9

Do Not Use Natural Gas.................................... 11.1 5.3 2.1 2.0 1.8

No......................................................................... 30.6 8.5 3.6 3.8 14.7

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and 

cooling degree-days. A household is assigned to a climate zone according to the 30-year average annual degree-days for an 

appropriate nearby weather station.

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

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Total......................................................................... 111.1 10.9 26.1 27.3 24.0 22.8

Census Region and Division

Northeast............................................................... 20.6 1.9 9.8 8.9 N N

New England...................................................... 5.5 1.3 4.1 Q N N

Middle Atlantic.................................................... 15.1 Q 5.7 8.8 N N

Midwest................................................................. 25.6 6.9 12.3 6.4 N N

East North Central.............................................. 17.7 4.9 9.9 3.0 N N

West North Central............................................ 7.9 Q Q 3.4 N N

South..................................................................... 40.7 N Q 8.5 11.5 19.9

South Atlantic..................................................... 21.7 N Q 5.8 7.0 8.0

East South Central............................................. 6.9 N N 1.8 2.9 2.2

West South Central............................................ 12.1 N N Q 1.6 9.7

West...................................................................... 24.2 2.1 3.1 3.5 12.4 2.9

Mountain............................................................ 7.6 1.7 2.0 Q Q 2.4

Pacific................................................................ 16.6 0.4 Q 2.6 12.0 0.5

Urban/Rural Location (as Self-Reported)2

City........................................................................ 47.1 3.4 8.9 11.5 11.9 11.4

Town...................................................................... 19.0 2.5 5.8 5.2 2.4 3.1

Suburbs................................................................. 22.7 1.4 6.6 5.6 4.7 4.4

Rural...................................................................... 22.3 3.7 4.8 5.0 5.0 3.9

Type of Housing Unit

Single-Family Detached..................................... 72.1 8.1 16.6 16.4 15.5 15.5

Single-Family Attached...................................... 7.6 0.8 2.0 2.5 1.6 0.7

Apartments in 2-4 Unit Buildings........................ 7.8 0.4 2.3 2.3 1.5 1.2

Apartments in 5 or More Unit Buildings.............. 16.7 0.9 4.0 4.8 3.6 3.4

Mobile Homes.................................................... 6.9 0.7 1.2 1.3 1.8 2.0

Ownership of Housing Unit

Owned.................................................................. 78.1 8.6 18.5 18.4 16.4 16.3

Single-Family Detached..................................... 64.1 7.2 15.0 14.9 13.5 13.4

Single-Family Attached...................................... 4.2 Q 1.2 1.4 0.6 0.3

Apartments in 2-4 Unit Buildings........................ 1.8 Q 0.8 0.6 Q Q

Apartments in 5 or More Unit Buildings.............. 2.3 Q 0.4 0.5 0.7 0.6

Mobile Homes.................................................... 5.7 0.5 1.1 1.0 1.5 1.7

Rented.................................................................. 33.0 2.3 7.6 8.9 7.6 6.5

Single-Family Detached..................................... 8.0 0.8 1.6 1.5 2.0 2.1

Single-Family Attached...................................... 3.4 0.3 0.7 1.1 0.9 0.4

Apartments in 2-4 Unit Buildings........................ 5.9 0.3 1.5 1.7 1.4 1.0

Apartments in 5 or More Unit Buildings.............. 14.4 0.8 3.6 4.3 2.9 2.8

Mobile Homes.................................................... 1.2 Q Q 0.3 0.4 Q

Year of Construction3

1939 or Before....................................................... 14.7 2.0 5.4 4.8 1.7 0.9

1940 to 1949.......................................................... 7.4 0.4 2.3 2.0 1.8 0.9

1950 to 1959.......................................................... 12.5 1.1 3.6 3.2 2.6 2.0

1960 to 1969.......................................................... 12.5 1.0 2.8 3.5 2.5 2.7

1970 to 1979.......................................................... 18.9 2.0 4.1 3.7 4.7 4.4

1980 to 1989.......................................................... 18.6 1.6 2.9 4.3 5.1 4.6

1990 to 1999.......................................................... 17.3 1.8 3.2 4.4 3.7 4.3

2000 to 2005.......................................................... 9.2 1.2 1.8 1.2 1.9 3.1

4,000 to 

5,499 HDD

Less than 

4,000 HDD

Table HC9.1 Housing Unit Characteristics by Climate Zone, 2005

 Million U.S. Housing Units

Less than 2,000 CDD and --

Climate Zone1

2,000 CDD 

or More

and Less 

than 4,000 

Housing Unit Characteristics HDD

Greater than 

7,000 HDD

5,500 to 

7,000 HDD

Housing 

Units 

(millions)

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
4,000 to 

5,499 HDD

Less than 

4,000 HDD

Table HC9.1 Housing Unit Characteristics by Climate Zone, 2005

 Million U.S. Housing Units

Less than 2,000 CDD and --

Climate Zone1

2,000 CDD 

or More

and Less 

than 4,000 

Housing Unit Characteristics HDD

Greater than 

7,000 HDD

5,500 to 

7,000 HDD

Housing 

Units 

(millions)

Number of Stories

Single-Family Homes

1 Story............................................................... 46.7 4.2 8.7 9.2 11.0 13.5

2 Stories............................................................. 28.0 3.7 8.0 8.5 5.2 2.5

3 or More Stories................................................ 2.5 0.3 0.9 0.8 0.4 Q

Split-level........................................................... 1.9 0.5 0.8 0.4 Q N

Other.................................................................. 0.5 Q 0.3 Q Q N

Not Asked.......................................................... 31.4 2.1 7.5 8.4 6.9 6.6

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors.......................................................... 8.2 0.4 1.6 1.6 2.5 2.0

3 or 4 Floors.......................................................... 6.0 0.5 1.9 1.7 1.0 0.8

5 to 10 Floors......................................................... 1.6 N 0.3 0.9 Q 0.3

11 to 20 Floors....................................................... 0.6 N Q Q N Q

More than 20 Floors............................................... Q N N Q N Q

Not Asked.............................................................. 94.4 10.0 22.1 22.5 20.3 19.4

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel).............................. 35.3 5.4 11.1 10.3 5.1 3.5

Brick...................................................................... 31.3 1.1 8.2 9.9 4.5 7.6

Wood..................................................................... 20.0 3.3 5.1 3.9 4.5 3.2

Stucco................................................................... 14.8 0.5 0.5 1.2 9.1 3.5

Concrete/Concrete Block....................................... 5.3 Q Q 0.6 Q 4.3

Composition (Shingle)........................................... 1.9 Q 0.5 0.6 0.5 Q

Stone..................................................................... 1.0 Q 0.2 0.3 Q Q

Other..................................................................... 1.5 0.3 0.3 0.5 Q 0.3

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement.............................................................. 35.5 7.1 14.1 11.5 2.5 0.3

Crawlspace............................................................ 25.1 1.9 5.8 7.2 7.3 2.8

Concrete Slab........................................................ 40.2 2.5 6.2 6.9 10.5 14.1

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units)......................................... 23.7 1.6 5.2 6.0 5.5 5.4

Fuels Used for Any Use

(more than one may apply)

Electricity............................................................... 111.1 10.9 26.1 27.3 24.0 22.8

Natural Gas........................................................... 69.5 6.9 19.1 17.9 15.9 9.7

Wood..................................................................... 14.4 2.4 2.7 3.6 3.5 2.2

Fuel Oil.................................................................. 8.4 1.7 3.0 3.4 Q Q

LPG....................................................................... 12.6 2.1 2.8 2.4 3.3 2.0

Kerosene............................................................... 1.7 Q 0.6 0.5 0.4 Q

Solar...................................................................... 0.2 Q Q Q Q Q

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
4,000 to 

5,499 HDD

Less than 

4,000 HDD

Table HC9.1 Housing Unit Characteristics by Climate Zone, 2005

 Million U.S. Housing Units

Less than 2,000 CDD and --

Climate Zone1

2,000 CDD 

or More

and Less 

than 4,000 

Housing Unit Characteristics HDD

Greater than 

7,000 HDD

5,500 to 

7,000 HDD

Housing 

Units 

(millions)

Main Space Heating Fuel

Natural Gas........................................................... 58.2 6.2 17.6 14.9 12.6 6.9

Electricity............................................................... 33.7 1.0 3.3 7.1 8.1 14.1

Fuel Oil.................................................................. 7.7 1.5 2.9 3.1 Q N

LPG....................................................................... 6.0 1.3 1.2 1.0 1.9 0.6

Wood..................................................................... 2.9 0.7 0.4 0.8 0.6 0.4

Kerosene............................................................... 0.7 Q Q Q Q Q

Solar...................................................................... Q Q N N N N

Other..................................................................... Q N Q Q N N

None...................................................................... 1.3 Q Q N 0.3 0.8

Natural Gas Available

in Neighborhood

Yes........................................................................ 80.5 7.7 21.2 20.6 18.3 12.8

Actually Use Natural Gas................................... 69.5 6.9 19.1 17.9 15.9 9.7

Do Not Use Natural Gas..................................... 11.1 0.8 2.1 2.7 2.4 3.1

No.......................................................................... 30.6 3.2 4.9 6.7 5.7 10.0

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and cooling 

degree-days. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby 

weather station.

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

 3. New construction for 2005 includes only those housing units built and occupied between January and the August-December period 

when the household interviews were conducted.

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

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC10.1 Housing Unit Characteristics by U.S. Census Region, 2005

Total......................................................................... 111.1 20.6 25.6 40.7 24.2

Census Region and Division

Northeast.............................................................. 20.6 20.6 N N N

New England..................................................... 5.5 5.5 N N N

Middle Atlantic................................................... 15.1 15.1 N N N

Midwest................................................................. 25.6 N 25.6 N N

East North Central............................................. 17.7 N 17.7 N N

West North Central............................................ 7.9 N 7.9 N N

South.................................................................... 40.7 N N 40.7 N

South Atlantic.................................................... 21.7 N N 21.7 N

East South Central............................................ 6.9 N N 6.9 N

West South Central........................................... 12.1 N N 12.1 N

West..................................................................... 24.2 N N N 24.2

Mountain........................................................... 7.6 N N N 7.6

Pacific............................................................... 16.6 N N N 16.6

Urban/Rural Location (as Self-Reported)

City....................................................................... 47.1 6.9 9.7 17.8 12.8

Town..................................................................... 19.0 6.0 5.0 4.9 3.0

Suburbs................................................................ 22.7 4.4 5.7 7.6 4.9

Rural..................................................................... 22.3 3.2 5.2 10.4 3.5

Climate Zone1

Less than 2,000 CDD and--

Greater than 7,000 HDD.................................... 10.9 1.9 6.9 N 2.1

5,500 to 7,000 HDD........................................... 26.1 9.8 12.3 Q 3.1

4,000 to 5,499 HDD........................................... 27.3 8.9 6.4 8.5 3.5

Less than 4,000 HDD........................................ 24.0 N N 11.5 12.4

2000 CDD or More and--

Less than 4,000 HDD........................................ 22.8 N N 19.9 2.9

Type of Housing Unit

Single-Family Detached.................................... 72.1 11.2 18.7 27.2 15.0

Single-Family Attached...................................... 7.6 2.3 1.5 2.0 1.8

Apartments in 2-4 Unit Buildings....................... 7.8 2.5 1.5 1.9 1.8

Apartments in 5 or More Unit Buildings............. 16.7 4.2 3.1 5.8 3.6

Mobile Homes................................................... 6.9 0.4 0.8 3.8 2.0

Ownership of Housing Unit

Owned.................................................................. 78.1 13.4 19.4 28.9 16.4

Single-Family Detached.................................... 64.1 10.4 16.9 23.8 13.0

Single-Family Attached...................................... 4.2 1.4 1.0 0.8 1.0

Apartments in 2-4 Unit Buildings....................... 1.8 1.0 0.5 Q Q

Apartments in 5 or More Unit Buildings............. 2.3 0.3 0.4 0.9 0.7

Mobile Homes................................................... 5.7 0.4 0.7 3.1 1.6

Rented.................................................................. 33.0 7.2 6.2 11.8 7.8

Single-Family Detached.................................... 8.0 0.8 1.8 3.4 2.0

Single-Family Attached...................................... 3.4 0.9 0.5 1.1 0.8

Apartments in 2-4 Unit Buildings....................... 5.9 1.6 1.0 1.7 1.7

Apartments in 5 or More Unit Buildings............. 14.4 3.8 2.7 4.9 3.0

Mobile Homes................................................... 1.2 Q Q 0.7 0.3

 Million U.S. Housing Units

U.S. Census Region

Housing Unit Characteristics Northeast Midwest South West

Housing

Units 

(millions)

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC10.1 Housing Unit Characteristics by U.S. Census Region, 2005

 Million U.S. Housing Units

U.S. Census Region

Housing Unit Characteristics Northeast Midwest South West

Housing

Units 

(millions)

Year of Construction

1939 or Before...................................................... 14.7 5.6 4.1 2.8 2.2

1940 to 1949......................................................... 7.4 1.8 2.3 1.7 1.6

1950 to 1959......................................................... 12.5 3.3 3.2 3.5 2.5

1960 to 1969......................................................... 12.5 2.4 3.2 4.2 2.6

1970 to 1979......................................................... 18.9 2.7 4.0 7.1 5.0

1980 to 1989......................................................... 18.6 2.3 2.8 8.4 5.1

1990 to 1999......................................................... 17.3 1.5 4.1 8.3 3.4

2000 to 2005......................................................... 9.2 0.9 1.8 4.8 1.7

Number of Stories in

Single-Family Homes

1 Story.................................................................. 46.7 4.2 11.3 20.2 11.0

2 Stories................................................................ 28.0 7.8 7.4 8.2 4.6

3 or More Stories.................................................. 2.5 1.0 0.4 0.4 0.7

Split-level.............................................................. 1.9 0.2 1.0 Q 0.5

Other..................................................................... 0.5 QQQQ

Not Asked............................................................. 31.4 7.1 5.4 11.6 7.4

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors.......................................................... 8.2 1.5 1.2 2.8 2.6

3 or 4 Floors.......................................................... 6.0 1.5 1.5 2.0 0.9

5 to 10 Floors........................................................ 1.6 0.9 Q 0.5 Q

11 to 20 Floors...................................................... 0.6 QQQQ

More than 20 Floors.............................................. Q N Q Q N

Not Asked............................................................. 94.4 16.4 22.5 34.9 20.6

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel)............................. 35.3 8.2 11.5 11.6 4.0

Brick...................................................................... 31.3 6.4 8.0 15.0 2.0

Wood.................................................................... 20.0 3.6 4.5 5.7 6.2

Stucco................................................................... 14.8 0.7 0.5 2.4 11.3

Concrete/Concrete Block...................................... 5.3 0.4 Q 4.4 0.3

Composition (Shingle)........................................... 1.9 0.7 0.3 0.7 Q

Stone.................................................................... 1.0 0.4 Q 0.5 Q

Other..................................................................... 1.5 Q 0.7 0.5 Q

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement.............................................................. 35.5 11.7 14.7 5.9 3.2

Crawlspace........................................................... 25.1 3.0 5.9 9.2 6.9

Concrete Slab....................................................... 40.2 3.9 6.6 18.2 11.5

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units)........................................ 23.7 4.6 3.9 9.6 5.6

Fuels Used for Any Use

(more than one may apply)

Electricity.............................................................. 111.1 20.6 25.6 40.7 24.2

Natural Gas........................................................... 69.5 13.6 20.1 17.5 18.2

Wood.................................................................... 14.4 1.8 3.7 5.0 4.0

Fuel Oil................................................................. 8.4 6.5 0.8 0.7 0.4

LPG...................................................................... 12.6 2.0 3.0 5.2 2.5

Kerosene.............................................................. 1.7 0.5 0.3 0.8 Q

Solar..................................................................... 0.2 N Q N 0.2

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC10.1 Housing Unit Characteristics by U.S. Census Region, 2005

 Million U.S. Housing Units

U.S. Census Region

Housing Unit Characteristics Northeast Midwest South West

Housing

Units 

(millions)

Main Heating Fuel

Natural Gas........................................................... 58.2 11.4 18.4 13.6 14.7

Electricity.............................................................. 33.7 1.6 3.5 22.1 6.5

Fuel Oil................................................................. 7.7 6.2 0.7 0.5 0.3

LPG...................................................................... 6.0 0.4 1.9 2.7 1.0

Wood.................................................................... 2.9 0.5 0.7 0.9 0.8

Kerosene.............................................................. 0.7 0.2 Q 0.4 Q

Solar..................................................................... Q N N N Q

Other..................................................................... QQQQQ

None..................................................................... 1.3 Q Q 0.4 0.7

Natural Gas Available

in Neighborhood

Yes....................................................................... 80.5 15.6 21.7 23.4 19.8

Actually Use Natural Gas.................................. 69.5 13.6 20.1 17.5 18.2

Do Not Use Natural Gas.................................... 11.1 2.0 1.6 5.9 1.7

No......................................................................... 30.6 5.0 3.9 17.4 4.4

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and 

cooling degree-days. A household is assigned to a climate zone according to the 30-year average annual degree-days for an 

appropriate nearby weather station.

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

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC11.1 Housing Unit Characteristics by Northeast Census Region, 2005

Total......................................................................... 0.0 0.0 0.0 0.0

Urban/Rural Location (as Self-Reported)

City....................................................................... 3.1 10.8 14.7 12.4

Town..................................................................... 6.6 15.4 20.7 18.0

Suburbs................................................................ 5.4 18.5 20.6 18.8

Rural..................................................................... 5.7 12.7 14.5 25.8

Climate Zone1

Less than 2,000 CDD and--

Greater than 7,000 HDD.................................... 15.0 42.2 102.9 41.3

5,500 to 7,000 HDD........................................... 9.7 15.9 25.5 13.4

4,000 to 5,499 HDD........................................... 8.6 14.8 14.8 95.3

Less than 4,000 HDD........................................ 7.0 0.0 0.0 0.0

2000 CDD or More and--

Less than 4,000 HDD........................................ 6.3 0.0 0.0 0.0

Type of Housing Unit

Single-Family Detached.................................... 2.2 7.0 8.8 10.7

Single-Family Attached...................................... 11.1 24.0 25.7 32.1

Apartments in 2-4 Unit Buildings....................... 8.0 15.3 23.1 11.2

Apartments in 5 or More Unit Buildings............. 6.2 10.8 12.0 24.0

Mobile Homes................................................... 8.8 26.3 28.4 49.6

Ownership of Housing Unit

Owned.................................................................. 1.6 3.8 4.4 7.8

Single-Family Detached.................................... 2.5 7.0 8.8 10.8

Single-Family Attached...................................... 15.9 35.1 37.9 42.7

Apartments in 2-4 Unit Buildings....................... 12.0 15.5 22.9 12.3

Apartments in 5 or More Unit Buildings............. 15.7 35.4 45.4 39.3

Mobile Homes................................................... 8.8 27.8 22.0 54.7

Rented.................................................................. 3.9 7.2 7.7 17.4

Single-Family Detached.................................... 5.7 14.8 18.1 18.1

Single-Family Attached...................................... 12.7 23.9 25.3 32.9

Apartments in 2-4 Unit Buildings....................... 8.9 18.9 27.8 18.2

Apartments in 5 or More Unit Buildings............. 7.1 11.4 13.0 23.7

Mobile Homes................................................... 20.3 62.0 70.8 104.8

Year of Construction

1939 or Before...................................................... 5.3 9.5 12.7 13.4

1940 to 1949......................................................... 7.6 10.1 11.7 21.2

1950 to 1959......................................................... 5.4 9.2 9.3 25.2

1960 to 1969......................................................... 5.6 10.4 13.1 11.1

1970 to 1979......................................................... 4.1 9.4 11.8 8.5

1980 to 1989......................................................... 5.7 18.0 23.1 19.7

1990 to 1999......................................................... 4.8 16.1 20.8 17.7

2000 to 2005......................................................... 7.4 19.5 21.0 39.7

 Relative Standard Errors

Housing Unit Characteristics Middle Atlantic New England

Northeast Census Region

U.S.

Housing

Units

(millions)

Census Division

Total

Northeast

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC11.1 Housing Unit Characteristics by Northeast Census Region, 2005

 Relative Standard Errors

Housing Unit Characteristics Middle Atlantic New England

Northeast Census Region

U.S.

Housing

Units

(millions)

Census Division

Total

Northeast

Number of Stories in

Single-Family Homes

1 Story.................................................................. 2.8 13.4 16.4 22.8

2 Stories................................................................ 3.7 5.1 5.8 10.9

3 or More Stories.................................................. 14.2 27.2 35.8 25.5

Split-level.............................................................. 16.2 20.5 24.5 33.5

Other..................................................................... 30.8 53.0 55.6 102.9

Not Asked............................................................. 4.1 7.4 8.1 15.9

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors.......................................................... 9.3 20.5 23.8 19.0

3 or 4 Floors.......................................................... 11.7 23.8 34.7 27.4

5 to 10 Floors........................................................ 14.6 20.1 21.9 48.5

11 to 20 Floors...................................................... 45.2 75.4 75.4 0.0

More than 20 Floors.............................................. 57.3 0.0 0.0 0.0

Not Asked............................................................. 1.1 2.7 3.2 5.3

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel)............................. 3.6 7.8 10.4 9.5

Brick...................................................................... 4.2 9.7 10.5 25.4

Wood.................................................................... 5.2 11.3 23.9 5.0

Stucco................................................................... 4.5 25.5 27.3 49.5

Concrete/Concrete Block...................................... 8.0 28.3 32.5 34.8

Composition (Shingle)........................................... 18.2 34.8 43.6 21.4

Stone.................................................................... 26.2 41.9 41.9 0.0

Other..................................................................... 17.8 55.1 74.3 59.8

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement.............................................................. 3.8 7.6 10.0 10.3

Crawlspace........................................................... 4.2 15.0 19.0 13.1

Concrete Slab....................................................... 2.9 9.4 11.5 7.3

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units)........................................ 4.7 9.9 11.0 22.3

Fuels Used for Any Use

(more than one may apply)

Electricity.............................................................. 0.0 0.0 0.0 0.0

Natural Gas........................................................... 2.6 8.2 9.5 12.9

Wood.................................................................... 5.2 12.8 17.7 16.9

Fuel Oil................................................................. 12.0 14.8 22.6 11.9

LPG...................................................................... 7.0 21.9 29.1 20.8

Kerosene.............................................................. 17.2 33.1 34.9 70.8

Solar..................................................................... 28.9 0.0 0.0 0.0

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC11.1 Housing Unit Characteristics by Northeast Census Region, 2005

 Relative Standard Errors

Housing Unit Characteristics Middle Atlantic New England

Northeast Census Region

U.S.

Housing

Units

(millions)

Census Division

Total

Northeast

Main Heating Fuel

Natural Gas........................................................... 3.0 10.4 12.3 13.3

Electricity.............................................................. 4.1 20.1 22.0 31.6

Fuel Oil................................................................. 12.3 14.7 22.7 11.1

LPG...................................................................... 8.8 18.1 22.5 26.1

Wood.................................................................... 12.7 28.3 37.8 35.6

Kerosene.............................................................. 26.7 43.8 58.9 58.2

Solar..................................................................... 86.4 0.0 0.0 0.0

Other..................................................................... 38.1 71.7 71.7 0.0

None..................................................................... 13.5 60.5 96.6 67.6

Natural Gas Available

in Neighborhood

Yes....................................................................... 2.0 6.2 7.3 10.6

Actually Use Natural Gas.................................. 2.6 8.2 9.5 12.9

Do Not Use Natural Gas.................................... 6.2 15.5 24.2 14.1

No......................................................................... 5.3 19.3 28.2 20.2

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and cooling 

degree-days.. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate

nearby weather station.

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

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC12.1 Housing Unit Characteristics by Midwest Census Region, 2005

Total......................................................................... 111.1 25.6 17.7 7.9

Urban/Rural Location (as Self-Reported)

City....................................................................... 47.1 9.7 7.3 2.4

Town..................................................................... 19.0 5.0 2.9 2.1

Suburbs................................................................ 22.7 5.7 4.3 1.4

Rural..................................................................... 22.3 5.2 3.3 1.9

Climate Zone1

Less than 2,000 CDD and--

Greater than 7,000 HDD.................................... 10.9 6.9 4.9 Q

5,500 to 7,000 HDD........................................... 26.1 12.3 9.9 Q

4,000 to 5,499 HDD........................................... 27.3 6.4 3.0 3.4

Less than 4,000 HDD........................................ 24.0 N N N

2000 CDD or More and--

Less than 4,000 HDD........................................ 22.8 N N N

Type of Housing Unit

Single-Family Detached.................................... 72.1 18.7 12.9 5.8

Single-Family Attached...................................... 7.6 1.5 1.2 Q

Apartments in 2-4 Unit Buildings....................... 7.8 1.5 1.2 0.4

Apartments in 5 or More Unit Buildings............. 16.7 3.1 2.1 1.0

Mobile Homes................................................... 6.9 0.8 0.4 0.3

Ownership of Housing Unit

Owned.................................................................. 78.1 19.4 13.6 5.8

Single-Family Detached.................................... 64.1 16.9 11.7 5.2

Single-Family Attached...................................... 4.2 1.0 0.7 Q

Apartments in 2-4 Unit Buildings....................... 1.8 0.5 0.5 Q

Apartments in 5 or More Unit Buildings............. 2.3 0.4 Q Q

Mobile Homes................................................... 5.7 0.7 0.3 0.3

Rented.................................................................. 33.0 6.2 4.2 2.0

Single-Family Detached.................................... 8.0 1.8 1.2 0.6

Single-Family Attached...................................... 3.4 0.5 0.4 Q

Apartments in 2-4 Unit Buildings....................... 5.9 1.0 0.7 0.3

Apartments in 5 or More Unit Buildings............. 14.4 2.7 1.8 1.0

Mobile Homes................................................... 1.2 Q Q N

Year of Construction

1939 or Before...................................................... 14.7 4.1 3.0 1.1

1940 to 1949......................................................... 7.4 2.3 1.8 0.5

1950 to 1959......................................................... 12.5 3.2 2.1 1.1

1960 to 1969......................................................... 12.5 3.2 2.2 1.0

1970 to 1979......................................................... 18.9 4.0 3.0 1.0

1980 to 1989......................................................... 18.6 2.8 2.1 0.8

1990 to 1999......................................................... 17.3 4.1 2.4 1.7

2000 to 2005......................................................... 9.2 1.8 1.2 0.7

 Million U.S. Housing Units

Housing Unit Characteristics East North Central West North Central

Midwest Census Region

U.S.

Housing

Units

(millions)

Census Division

Total

Midwest

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC12.1 Housing Unit Characteristics by Midwest Census Region, 2005

 Million U.S. Housing Units

Housing Unit Characteristics East North Central West North Central

Midwest Census Region

U.S.

Housing

Units

(millions)

Census Division

Total

Midwest

Number of Stories in

Single-Family Homes

1 Story.................................................................. 46.7 11.3 7.5 3.8

2 Stories................................................................ 28.0 7.4 5.7 1.7

3 or More Stories.................................................. 2.5 0.4 Q Q

Split-level.............................................................. 1.9 1.0 0.6 0.4

Other..................................................................... 0.5 Q Q Q

Not Asked............................................................. 31.4 5.4 3.7 1.7

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors.......................................................... 8.2 1.2 0.8 0.4

3 or 4 Floors.......................................................... 6.0 1.5 1.0 0.5

5 to 10 Floors........................................................ 1.6 Q Q Q

11 to 20 Floors...................................................... 0.6 Q Q N

More than 20 Floors.............................................. Q Q N Q

Not Asked............................................................. 94.4 22.5 15.7 6.8

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel)............................. 35.3 11.5 7.9 3.5

Brick...................................................................... 31.3 8.0 6.3 1.7

Wood.................................................................... 20.0 4.5 2.4 2.1

Stucco................................................................... 14.8 0.5 Q 0.2

Concrete/Concrete Block...................................... 5.3 Q Q Q

Composition (Shingle)........................................... 1.9 0.3 Q Q

Stone.................................................................... 1.0 Q Q Q

Other..................................................................... 1.5 0.7 0.5 Q

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement.............................................................. 35.5 14.7 10.5 4.2

Crawlspace........................................................... 25.1 5.9 4.2 1.7

Concrete Slab....................................................... 40.2 6.6 4.3 2.2

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units)........................................ 23.7 3.9 2.5 1.4

Fuels Used for Any Use

(more than one may apply)

Electricity.............................................................. 111.1 25.6 17.7 7.9

Natural Gas........................................................... 69.5 20.1 14.1 6.0

Wood.................................................................... 14.4 3.7 2.2 1.5

Fuel Oil................................................................. 8.4 0.8 0.8 Q

LPG...................................................................... 12.6 3.0 1.8 1.2

Kerosene.............................................................. 1.7 0.3 0.2 Q

Solar..................................................................... 0.2 Q Q Q

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC12.1 Housing Unit Characteristics by Midwest Census Region, 2005

 Million U.S. Housing Units

Housing Unit Characteristics East North Central West North Central

Midwest Census Region

U.S.

Housing

Units

(millions)

Census Division

Total

Midwest

Main Heating Fuel

Natural Gas........................................................... 58.2 18.4 13.1 5.3

Electricity.............................................................. 33.7 3.5 2.1 1.4

Fuel Oil................................................................. 7.7 0.7 0.7 Q

LPG...................................................................... 6.0 1.9 1.1 0.8

Wood.................................................................... 2.9 0.7 0.4 0.3

Kerosene.............................................................. 0.7 Q Q N

Solar..................................................................... Q N N N

Other..................................................................... QQQQ

None..................................................................... 1.3 Q Q N

Natural Gas Available

in Neighborhood

Yes....................................................................... 80.5 21.7 15.2 6.5

Actually Use Natural Gas.................................. 69.5 20.1 14.1 6.0

Do Not Use Natural Gas.................................... 11.1 1.6 1.1 0.5

No......................................................................... 30.6 3.9 2.5 1.3

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and cooling 

degree-days. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby 

weather station.

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

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC13.1 Housing Unit Characteristics by South Census Region, 2005

Total......................................................................... 111.1 40.7 21.7 6.9 12.1

Urban/Rural Location (as Self-Reported)

City....................................................................... 47.1 17.8 10.5 2.2 5.1

Town..................................................................... 19.0 4.9 2.2 0.7 2.0

Suburbs................................................................ 22.7 7.6 4.1 1.1 2.4

Rural..................................................................... 22.3 10.4 4.9 2.9 2.6

Climate Zone1

Less than 2,000 CDD and--

Greater than 7,000 HDD.................................... 10.9 NNNN

5,500 to 7,000 HDD........................................... 26.1 Q Q N N

4,000 to 5,499 HDD........................................... 27.3 8.5 5.8 1.8 Q

Less than 4,000 HDD........................................ 24.0 11.5 7.0 2.9 1.6

2000 CDD or More and--

Less than 4,000 HDD........................................ 22.8 19.9 8.0 2.2 9.7

Type of Housing Unit

Single-Family Detached.................................... 72.1 27.2 13.4 5.2 8.5

Single-Family Attached...................................... 7.6 2.0 1.4 Q 0.4

Apartments in 2-4 Unit Buildings....................... 7.8 1.9 1.3 Q 0.5

Apartments in 5 or More Unit Buildings............. 16.7 5.8 3.6 0.6 1.6

Mobile Homes................................................... 6.9 3.8 2.0 0.7 1.1

Ownership of Housing Unit

Owned.................................................................. 78.1 28.9 15.3 5.3 8.3

Single-Family Detached.................................... 64.1 23.8 12.0 4.6 7.2

Single-Family Attached...................................... 4.2 0.8 0.6 Q Q

Apartments in 2-4 Unit Buildings....................... 1.8 Q Q N N

Apartments in 5 or More Unit Buildings............. 2.3 0.9 0.9 N Q

Mobile Homes................................................... 5.7 3.1 1.5 0.7 0.9

Rented.................................................................. 33.0 11.8 6.4 1.6 3.8

Single-Family Detached.................................... 8.0 3.4 1.4 0.6 1.3

Single-Family Attached...................................... 3.4 1.1 0.8 Q Q

Apartments in 2-4 Unit Buildings....................... 5.9 1.7 1.1 Q 0.5

Apartments in 5 or More Unit Buildings............. 14.4 4.9 2.7 0.6 1.6

Mobile Homes................................................... 1.2 0.7 0.4 Q Q

Year of Construction

1939 or Before...................................................... 14.7 2.8 1.4 0.7 0.6

1940 to 1949......................................................... 7.4 1.7 0.8 0.2 0.7

1950 to 1959......................................................... 12.5 3.5 1.6 0.7 1.3

1960 to 1969......................................................... 12.5 4.2 2.2 0.8 1.3

1970 to 1979......................................................... 18.9 7.1 3.8 1.0 2.3

1980 to 1989......................................................... 18.6 8.4 4.7 1.2 2.5

1990 to 1999......................................................... 17.3 8.3 4.8 1.5 2.0

2000 to 2005......................................................... 9.2 4.8 2.4 0.8 1.5

Number of Stories in

Single-Family Homes

1 Story.................................................................. 46.7 20.2 9.4 3.9 7.0

2 Stories................................................................ 28.0 8.2 5.0 1.4 1.7

3 or More Stories.................................................. 2.5 0.4 0.2 Q Q

Split-level.............................................................. 1.9 QQQQ

Other..................................................................... 0.5 Q N Q N

Not Asked............................................................. 31.4 11.6 6.9 1.5 3.2

 Million U.S. Housing Units

Housing Unit Characteristics South Atlantic East South 

Central

West South 

Central

South Census Region

U.S.

Housing

Units

(millions)

Census Division

Total 

South

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC13.1 Housing Unit Characteristics by South Census Region, 2005

 Million U.S. Housing Units

Housing Unit Characteristics South Atlantic East South 

Central

West South 

Central

South Census Region

U.S.

Housing

Units

(millions)

Census Division

Total 

South

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors.......................................................... 8.2 2.8 1.4 0.3 1.2

3 or 4 Floors.......................................................... 6.0 2.0 1.4 0.2 0.4

5 to 10 Floors........................................................ 1.6 0.5 Q Q Q

11 to 20 Floors...................................................... 0.6 Q Q N N

More than 20 Floors.............................................. QQQQN

Not Asked............................................................. 94.4 34.9 18.1 6.3 10.5

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel)............................. 35.3 11.6 6.8 2.4 2.4

Brick...................................................................... 31.3 15.0 5.5 3.1 6.4

Wood.................................................................... 20.0 5.7 2.7 1.0 2.1

Stucco................................................................... 14.8 2.4 2.0 Q 0.4

Concrete/Concrete Block...................................... 5.3 4.4 4.2 Q Q

Composition (Shingle)........................................... 1.9 0.7 Q Q Q

Stone.................................................................... 1.0 0.5 Q Q Q

Other..................................................................... 1.5 0.5 Q Q Q

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement.............................................................. 35.5 5.9 4.4 1.3 Q

Crawlspace........................................................... 25.1 9.2 4.8 2.3 2.1

Concrete Slab....................................................... 40.2 18.2 8.4 2.6 7.2

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units)........................................ 23.7 9.6 5.5 1.3 2.7

Fuels Used for Any Use

(more than one may apply)

Electricity.............................................................. 111.1 40.7 21.7 6.9 12.1

Natural Gas........................................................... 69.5 17.5 7.4 2.9 7.1

Wood.................................................................... 14.4 5.0 2.6 0.9 1.5

Fuel Oil................................................................. 8.4 0.7 0.6 Q N

LPG...................................................................... 12.6 5.2 2.3 1.3 1.7

Kerosene.............................................................. 1.7 0.8 0.6 0.2 N

Solar..................................................................... 0.2 NNNN

Main Heating Fuel

Natural Gas........................................................... 58.2 13.6 5.6 2.3 5.7

Electricity.............................................................. 33.7 22.1 13.5 3.4 5.2

Fuel Oil................................................................. 7.7 0.5 0.5 Q N

LPG...................................................................... 6.0 2.7 1.0 0.9 0.8

Wood.................................................................... 2.9 0.9 0.3 0.2 0.3

Kerosene.............................................................. 0.7 0.4 0.4 Q N

Solar..................................................................... Q NNNN

Other..................................................................... Q Q N Q N

None..................................................................... 1.3 0.4 Q N Q

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC13.1 Housing Unit Characteristics by South Census Region, 2005

 Million U.S. Housing Units

Housing Unit Characteristics South Atlantic East South 

Central

West South 

Central

South Census Region

U.S.

Housing

Units

(millions)

Census Division

Total 

South

Natural Gas Available

in Neighborhood

Yes....................................................................... 80.5 23.4 10.9 3.9 8.5

Actually Use Natural Gas.................................. 69.5 17.5 7.4 2.9 7.1

Do Not Use Natural Gas.................................... 11.1 5.9 3.5 1.0 1.4

No......................................................................... 30.6 17.4 10.8 3.0 3.6

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and 

cooling degree-days. A household is assigned to a climate zone according to the 30-year average annual degree-days for an 

appropriate nearby weather station.

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

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC14.1 Housing Unit Characteristics by West Census Region, 2005

Total......................................................................... 111.1 24.2 7.6 16.6

Urban/Rural Location (as Self-Reported)

City....................................................................... 47.1 12.8 3.2 9.6

Town..................................................................... 19.0 3.0 1.1 1.9

Suburbs................................................................ 22.7 4.9 1.6 3.3

Rural..................................................................... 22.3 3.5 1.7 1.9

Climate Zone1

Less than 2,000 CDD and--

Greater than 7,000 HDD.................................... 10.9 2.1 1.7 0.4

5,500 to 7,000 HDD........................................... 26.1 3.1 2.0 Q

4,000 to 5,499 HDD........................................... 27.3 3.5 Q 2.6

Less than 4,000 HDD........................................ 24.0 12.4 Q 12.0

2000 CDD or More and--

Less than 4,000 HDD........................................ 22.8 2.9 2.4 0.5

Type of Housing Unit

Single-Family Detached.................................... 72.1 15.0 5.0 10.0

Single-Family Attached...................................... 7.6 1.8 0.6 1.2

Apartments in 2-4 Unit Buildings....................... 7.8 1.8 0.3 1.5

Apartments in 5 or More Unit Buildings............. 16.7 3.6 0.7 3.0

Mobile Homes................................................... 6.9 2.0 0.9 1.0

Ownership of Housing Unit

Owned.................................................................. 78.1 16.4 5.8 10.6

Single-Family Detached.................................... 64.1 13.0 4.4 8.7

Single-Family Attached...................................... 4.2 1.0 Q 0.5

Apartments in 2-4 Unit Buildings....................... 1.8 Q Q Q

Apartments in 5 or More Unit Buildings............. 2.3 0.7 Q 0.6

Mobile Homes................................................... 5.7 1.6 0.8 0.8

Rented.................................................................. 33.0 7.8 1.8 6.0

Single-Family Detached.................................... 8.0 2.0 0.7 1.3

Single-Family Attached...................................... 3.4 0.8 Q 0.7

Apartments in 2-4 Unit Buildings....................... 5.9 1.7 0.3 1.4

Apartments in 5 or More Unit Buildings............. 14.4 3.0 0.6 2.4

Mobile Homes................................................... 1.2 0.3 Q 0.2

Year of Construction

1939 or Before...................................................... 14.7 2.2 0.5 1.7

1940 to 1949......................................................... 7.4 1.6 Q 1.4

1950 to 1959......................................................... 12.5 2.5 0.6 1.9

1960 to 1969......................................................... 12.5 2.6 0.8 1.8

1970 to 1979......................................................... 18.9 5.0 1.4 3.6

1980 to 1989......................................................... 18.6 5.1 1.7 3.4

1990 to 1999......................................................... 17.3 3.4 1.4 2.0

2000 to 2005......................................................... 9.2 1.7 1.0 0.7

 Million U.S. Housing Units

Housing Unit Characteristics Mountain Pacific

West Census Region

U.S.

Housing

Units

(millions)

Census Division

Total

West

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC14.1 Housing Unit Characteristics by West Census Region, 2005

 Million U.S. Housing Units

Housing Unit Characteristics Mountain Pacific

West Census Region

U.S.

Housing

Units

(millions)

Census Division

Total

West

Number of Stories in

Single-Family Homes

1 Story.................................................................. 46.7 11.0 3.7 7.3

2 Stories................................................................ 28.0 4.6 1.3 3.3

3 or More Stories.................................................. 2.5 0.7 0.3 0.4

Split-level.............................................................. 1.9 0.5 0.3 Q

Other..................................................................... 0.5 Q Q Q

Not Asked............................................................. 31.4 7.4 1.9 5.5

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors.......................................................... 8.2 2.6 0.3 2.2

3 or 4 Floors.......................................................... 6.0 0.9 Q 0.6

5 to 10 Floors........................................................ 1.6 Q N Q

11 to 20 Floors...................................................... 0.6 Q N Q

More than 20 Floors.............................................. Q N N N

Not Asked............................................................. 94.4 20.6 6.9 13.7

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel)............................. 35.3 4.0 2.0 2.0

Brick...................................................................... 31.3 2.0 1.4 0.6

Wood.................................................................... 20.0 6.2 1.6 4.6

Stucco................................................................... 14.8 11.3 2.3 9.0

Concrete/Concrete Block...................................... 5.3 0.3 Q 0.3

Composition (Shingle)........................................... 1.9 Q Q Q

Stone.................................................................... 1.0 Q Q N

Other..................................................................... 1.5 Q Q Q

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement.............................................................. 35.5 3.2 1.8 1.4

Crawlspace........................................................... 25.1 6.9 1.5 5.4

Concrete Slab....................................................... 40.2 11.5 3.9 7.6

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units)........................................ 23.7 5.6 1.6 4.0

Fuels Used for Any Use

(more than one may apply)

Electricity.............................................................. 111.1 24.2 7.6 16.6

Natural Gas........................................................... 69.5 18.2 5.5 12.7

Wood.................................................................... 14.4 4.0 1.4 2.6

Fuel Oil................................................................. 8.4 0.4 Q 0.3

LPG...................................................................... 12.6 2.5 1.3 1.2

Kerosene.............................................................. 1.7 Q N Q

Solar..................................................................... 0.2 0.2 Q Q

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC14.1 Housing Unit Characteristics by West Census Region, 2005

 Million U.S. Housing Units

Housing Unit Characteristics Mountain Pacific

West Census Region

U.S.

Housing

Units

(millions)

Census Division

Total

West

Main Heating Fuel

Natural Gas........................................................... 58.2 14.7 4.6 10.1

Electricity.............................................................. 33.7 6.5 1.8 4.7

Fuel Oil................................................................. 7.7 0.3 Q Q

LPG...................................................................... 6.0 1.0 0.6 0.4

Wood.................................................................... 2.9 0.8 0.3 0.5

Kerosene.............................................................. 0.7 Q N Q

Solar..................................................................... Q Q Q N

Other..................................................................... Q Q Q N

None..................................................................... 1.3 0.7 Q 0.7

Natural Gas Available

in Neighborhood

Yes....................................................................... 80.5 19.8 6.0 13.8

Actually Use Natural Gas.................................. 69.5 18.2 5.5 12.7

Do Not Use Natural Gas.................................... 11.1 1.7 0.5 1.1

No......................................................................... 30.6 4.4 1.6 2.8

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) of the annual heating and cooling 

degree-days. A household is assigned to a climate zone according to the 30-year average annual degree-days for an appropriate nearby 

weather station.

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

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC15.1 Housing Unit Characteristics by Four Most Populated States, 2005

Total......................................................................... 111.1 7.1 7.0 8.0 12.1

Census Region and Division

Northeast.............................................................. 20.6 7.1 N N N

New England..................................................... 5.5 NNNN

Middle Atlantic................................................... 15.1 7.1 N N N

Midwest................................................................. 25.6 NNNN

East North Central............................................. 17.7 NNNN

West North Central............................................ 7.9 NNNN

South.................................................................... 40.7 N 7.0 8.0 N

South Atlantic.................................................... 21.7 N 7.0 N N

East South Central............................................ 6.9 NNNN

West South Central........................................... 12.1 N N 8.0 N

West..................................................................... 24.2 N N N 12.1

Mountain........................................................... 7.6 NNNN

Pacific............................................................... 16.6 N N N 12.1

Urban/Rural Location (as Self-Reported)

City....................................................................... 47.1 3.5 4.8 3.4 7.7

Town..................................................................... 19.0 0.9 0.9 1.2 1.3

Suburbs................................................................ 22.7 1.5 1.0 2.1 2.4

Rural..................................................................... 22.3 1.3 0.4 1.3 0.7

Climate Zone1

Less than 2,000 CDD and--

Greater than 7,000 HDD.................................... 10.9 Q N N N

5,500 to 7,000 HDD........................................... 26.1 3.0 N N Q

4,000 to 5,499 HDD........................................... 27.3 3.5 N Q N

Less than 4,000 HDD........................................ 24.0 N N N 11.9

2000 CDD or More and--

Less than 4,000 HDD........................................ 22.8 N 7.0 7.8 Q

Type of Housing Unit

Single-Family Detached.................................... 72.1 3.1 4.3 5.7 7.0

Single-Family Attached...................................... 7.6 0.4 Q 0.3 1.0

Apartments in 2-4 Unit Buildings....................... 7.8 1.2 0.7 Q 1.2

Apartments in 5 or More Unit Buildings............. 16.7 2.3 1.4 1.2 2.4

Mobile Homes................................................... 6.9 Q Q 0.5 0.5

Ownership of Housing Unit

Owned.................................................................. 78.1 3.8 4.8 5.3 7.4

Single-Family Detached.................................... 64.1 2.8 3.8 4.8 6.0

Single-Family Attached...................................... 4.2 Q Q Q 0.4

Apartments in 2-4 Unit Buildings....................... 1.8 0.5 Q N Q

Apartments in 5 or More Unit Buildings............. 2.3 Q 0.5 Q 0.6

Mobile Homes................................................... 5.7 Q Q 0.3 0.4

Rented.................................................................. 33.0 3.3 2.2 2.7 4.7

Single-Family Detached.................................... 8.0 0.3 0.5 0.9 0.9

Single-Family Attached...................................... 3.4 Q Q Q 0.6

Apartments in 2-4 Unit Buildings....................... 5.9 0.6 0.5 Q 1.1

Apartments in 5 or More Unit Buildings............. 14.4 2.2 1.0 1.2 1.8

Mobile Homes................................................... 1.2 QQQQ

 Million Housing Units

Four Most Populated States

Housing Unit Characteristics New York Florida Texas California

U.S.

Housing Units

(millions)

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC15.1 Housing Unit Characteristics by Four Most Populated States, 2005

 Million Housing Units

Four Most Populated States

Housing Unit Characteristics New York Florida Texas California

U.S.

Housing Units

(millions)

Year of Construction

1939 or Before...................................................... 14.7 2.2 Q 0.4 1.0

1940 to 1949......................................................... 7.4 0.6 Q 0.5 1.3

1950 to 1959......................................................... 12.5 1.1 0.7 0.6 1.5

1960 to 1969......................................................... 12.5 0.8 0.7 0.7 1.5

1970 to 1979......................................................... 18.9 1.0 1.6 1.3 2.8

1980 to 1989......................................................... 18.6 0.7 1.4 1.8 2.4

1990 to 1999......................................................... 17.3 0.5 1.2 1.5 1.1

2000 to 2005......................................................... 9.2 Q 1.0 1.2 0.4

Number of Stories in

Single-Family Homes

1 Story.................................................................. 46.7 1.1 4.1 4.2 5.4

2 Stories................................................................ 28.0 2.2 0.4 1.6 2.2

3 or More Stories.................................................. 2.5 Q N Q 0.3

Split-level.............................................................. 1.9 Q N N Q

Other..................................................................... 0.5 Q N N Q

Not Asked............................................................. 31.4 3.6 2.5 2.0 4.1

Number of Floors in Apartment

Buildings with 5 or More Units

1 or 2 Floors.......................................................... 8.2 0.9 0.8 0.8 1.8

3 or 4 Floors.......................................................... 6.0 0.5 Q 0.3 0.5

5 to 10 Floors........................................................ 1.6 0.7 Q Q Q

11 to 20 Floors...................................................... 0.6 Q N N N

More than 20 Floors.............................................. Q N Q N N

Not Asked............................................................. 94.4 4.8 5.6 6.7 9.7

Major Outside Wall Construction

Siding (Aluminum, Vinyl, Steel)............................. 35.3 2.4 0.5 1.0 0.8

Brick...................................................................... 31.3 2.6 Q 4.5 0.3

Wood.................................................................... 20.0 1.0 0.5 1.4 2.0

Stucco................................................................... 14.8 Q 1.6 0.3 8.8

Concrete/Concrete Block...................................... 5.3 0.3 3.9 Q Q

Composition (Shingle)........................................... 1.9 QQQQ

Stone.................................................................... 1.0 Q Q Q N

Other..................................................................... 1.5 QQQQ

Foundation/Basement of SingleFamily Units and Apartments in

2 to 4 Unit Buildings

(more than one may apply)

Basement.............................................................. 35.5 3.4 Q Q 0.6

Crawlspace........................................................... 25.1 0.6 0.4 0.7 3.4

Concrete Slab....................................................... 40.2 0.8 4.7 5.1 6.2

Not Asked (Mobile Homes and

Apartments in Buildings

With 5 or More Units)........................................ 23.7 2.4 1.8 1.7 2.9

Fuels Used for Any Use

(more than one may apply)

Electricity.............................................................. 111.1 7.1 7.0 8.0 12.1

Natural Gas........................................................... 69.5 5.3 1.2 4.8 10.6

Wood.................................................................... 14.4 0.6 Q 1.0 1.7

Fuel Oil................................................................. 8.4 2.3 N N Q

LPG...................................................................... 12.6 1.0 Q 0.8 0.9

Kerosene.............................................................. 1.7 Q Q N N

Solar..................................................................... 0.2 N N N Q

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables
Table HC15.1 Housing Unit Characteristics by Four Most Populated States, 2005

 Million Housing Units

Four Most Populated States

Housing Unit Characteristics New York Florida Texas California

U.S.

Housing Units

(millions)

Main Heating Fuel

Natural Gas........................................................... 58.2 3.8 0.4 3.8 8.4

Electricity.............................................................. 33.7 0.6 6.3 3.8 2.8

Fuel Oil................................................................. 7.7 2.2 N N Q

LPG...................................................................... 6.0 Q Q Q 0.3

Wood.................................................................... 2.9 Q N Q 0.3

Kerosene.............................................................. 0.7 Q Q N N

Solar..................................................................... Q NNNN

Other..................................................................... Q Q N N N

None..................................................................... 1.3 Q Q Q 0.2

Natural Gas Available

in Neighborhood

Yes....................................................................... 80.5 5.5 2.4 5.8 11.2

Actually Use Natural Gas.................................. 69.5 5.3 1.2 4.8 10.6

Do Not Use Natural Gas.................................... 11.1 Q 1.3 0.9 0.6

No......................................................................... 30.6 1.6 4.6 2.2 0.9

 1. One of five climatically distinct areas, determined according to the 30-year average (1971-2000) 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.

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

sampled.

 N = No cases in reporting sample.

 Notes: ● Because of rounding, data may not sum to totals. ● See Glossary for definition of terms used in these tables.

 Source: Energy Information Administration, Office of Energy Markets and End Use, Forms EIA-457 A, B, C of the 2005 

Residential Energy Consumption Survey.

Energy Information Administration

2005 Residential Energy Consumption Survey: Preliminary Housing Characteristics Tables