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Data and documentation
Common questions and answers.
Entire collection of data resources.
What are the geographic areas available for the 2007 ACS?
For single year data (2007), there is still a population threshold of 65,000. This is based on the Census Bureau estimate of the population on July 1, 2007. The following is a spreadsheet that shows each state's population size for 2000 (census) and the estimates for 2005, 2006, and 2007. The table is sorted by state and within state, by population size for 2007:
The ACS website has maps for each state:
In addition, one can get an Excel spreadsheet with lists of the counties available for states, for the most recent 1-year and 3-year estimates, by clicking the links in the second paragraph of the ACS Geographic Areas page: