Data Sources:

• U.S. Census Bureau, Census of Population and Housing, 2000 data
• U.S. Census Bureau, American Community Survey, 2001–2010

For more information on sources:

Definitions:

• Median Age: Regarding the age distribution of a population, the point at which half the population is older, and half is younger.

Explanations and Caveats

• The American Community Survey (ACS) is conducted annually by the U.S. Census Bureau and has replaced the Decennial Census Long Form. It is intended only as an estimate of the population rather than a definitive count. Since 2008 the ACS has included the population living in group quarters, such as college residence halls, group homes, military barracks, correctional facilities, workers’ dormitories, and homeless shelters. Group quarters populations tend to have different demographic and socioeconomic characteristics than does the general public. The Census of Population and Housing is conducted once every 10 years and also includes the population living in group quarters.

Update Status:

Updated October 2011