The nation's 118 million occupied housing units contain a total of 238 billion square feet of space, according to the Energy Information Administration's 2015 Residential Energy Consumption survey. That's an average of 2,012 square feet per home. The average size of occupied housing units varies by a number of factors, including...
Region: The smallest homes (1,685 square feet, on average) are in the Pacific states (Alaska, California, Hawaii, Oregon, and Washington). The largest homes (2,337 square feet) are in the West North Central states (Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, and South Dakota).
Climate: The smallest homes are in mixed dry/hot dry climates (1,665 square feet). The largest homes are in very cold/cold climates (2,239 square feet).
Year built: The smallest homes were built in the 1950s (1,866 square feet). The largest homes were built during the housing bubble—from 2000 to 2009 (2,381 square feet).
Household income: The average size of homes rises with household income. The smallest homes are those whose residents have a household income below $20,000 (1,325 square feet). The largest homes are those whose residents have a household income of $140,000 or more (3,051 square feet). On a per capita basis, the poorest households have 602 square feet per person and the richest households have 1,018.
Source: Energy Information Administration, 2015 Residential Energy Consumption Survey
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