American FactFinder
"The American Community Survey (ACS) ...collects information such as age, race, income, commute time to work, home value, veteran status, and other important data.
- One-Year Estimates
- Beginning with the 2005 ACS, and continuing every year thereafter, one-year estimates are available for geographic areas with a population of 65,000 or more. This includes the nation, all states and the District of Columbia, all congressional districts, approximately 800 counties, and 500 metropolitan and micropolitan statistical areas, among others.
- Multiyear Estimates
- In 2008, the ACS will release its first multiyear estimates based on ACS data collected from 2005 through 2007. These three-year estimates will be available for geographic areas with a population of 20,000 or more, including the nation, all states and the District of Columbia, all congressional districts, approximately 1,800 counties, and 900 metropolitan and micropolitan statistical areas, among others.
- For areas with a population less than 20,000, five-year estimates will be available. The first five-year estimates, based on ACS data collected from 2005 through 2009, will be released in 2010."