Table 4. Total Square Feet in U.S. Housing Units 
by Census Region and Type of Housing Unit, 1980-2001(Billions) of Square Feet) 

Type of Housing Unit and Census Region Survey Years Excel Worksheet (xls) 1980 1981 1982 1984 1987 1990 1993 1997 2001 U.S. Total 142.5 144.2 142.25 144.36 156.82 169.23 181.23 168.81 221.1 Mobile Home 3.8 3.7 3.22 4.3 4.41 4.9 5.44 6.27 7.2 Single-Family Detached 112.94 114.21 110.84 109.69 118.69 130.86 139.06 128.87 161.1 Single-Family Attached 6.07 5.85 6.92 7.67 10.18 10.01 13.14 14.59 25.1 Apartments in Buildings with 2 to 4 Units 10.79 10.51 11.54 11.61 11.62 11.78 9.61 5.52 13.2 Apartments in Buildings with 5 or More Units 8.89 9.94 9.73 11.09 11.92 11.68 13.97 13.55 14.4 Total Northeast 34.85 35.08 34.35 35.02 36.82 40.35 40.05 34.58 45.3 Mobile Home 0.46 0.41 0.29 0.55 0.52 0.49 0.50 0.47 0.7 Single-Family Detached 24.15 24.54 23.22 24.08 25.12 28.03 27.52 24.54 28.4 Single-Family Attached 3.21 2.85 3.77 3.57 3.83 4.3 4.36 4.67 6.7 Apartments in Buildings with 2 to 4 Units 4.2 4.27 4.52 4.19 4.25 4.45 4.29 1.75 5.7 Apartments in Buildings with 5 or More Units 2.82 3.01 2.55 2.63 3.1 3.09 3.38 3.15 3.8 Total Midwest 40.8 41.47 39.92 39.14 44.27 46.94 50.57 46.1 58.2 Mobile Home 0.5 0.73 0.61 0.99 1.02 1.54 1.39 0.98 1.2 Single-Family Detached 34.81 35.07 32.63 30.27 35.45 38.37 41.87 38.19 43.0 Single-Family Attached 0.41 0.58 1.07 1.78 2.51 1.29 2.02 2.95 8.3 Apartments in Buildings with 2 to 4 Units 3.31 3.16 3.26 3.65 3.16 3.32 2.26 1.72 3.3 Apartments in Buildings with 5 or More Units 1.77 1.93 2.36 2.45 2.13 2.41 3.03 2.27 2.4 Total South 42.18 42.59 43.69 44.52 47.13 52.44 57.15 56.12 76.6 Mobile Home 1.94 1.74 1.45 1.81 1.83 1.68 2.55 3.18 3.5 Single-Family Detached 35 35.11 37.11 36.64 37.47 42.48 44.87 42.99 59.9 Single-Family Attached 1.12 1.12 0.69 1.81 2.37 2.59 4.37 4.1 6.6 Apartments in Buildings with 2 to 4 Units 1.82 1.59 2.21 1.53 2.1 2.34 1.56 1.34 2.7 Apartments in Buildings with 5 or More Units 2.31 3.02 2.23 2.73 3.37 3.35 3.79 4.51 4.0 Total West 24.67 25.06 24.29 25.68 28.59 29.5 33.46 32 41.0 Mobile Home 0.91 0.81 0.88 0.95 1.04 1.19 0.99 1.65 1.9 Single-Family Detached 18.97 19.49 17.89 18.69 20.65 21.97 24.81 23.14 29.8 Single-Family Attached 1.34 1.29 1.38 0.52 1.47 1.83 2.39 2.88 3.6 Apartments in Buildings with 2 to 4 Units 1.45 1.48 1.56 2.24 2.12 1.67 1.49 0.71 1.5 Apartments in Buildings with 5 or More Units 2 1.99 2.59 3.28 3.32 2.84 3.78 3.62 4.2 Note: In the 1997 RECS the floor area of the housing unit was not measured. The heated floorspace was estimated using regression analysis. Prior 1997 and 2001 estimates include all the floor area of the housing unit that was enclosed from the weather.Sources: Energy Information Administration, Residential Energy Consumption Surveys, 1980, 1981, 1982, 1984, 1987, 1990, 1993, 1997, and 2001.

For specific questions about the "Total Square Feet in U.S. Housing Units ", please contact: Stephanie J. Battles stephanie.battles@eia.doe.gov Phone: 202-586-7237 Fax:  202-586-0018 Release Date: September 2, 2004  EIA Home  Contact Us URL:   http://www.eia.doe.gov/emeu/efficiency/recs_4_table.htm