The American Community Survey (ACS) is an extensive annual survey administered by the Census Bureau to a sample of about three million households nationwide. The data includes variables on income, race, ancestry, health insurance, housing, commute time and much more.
This latest release of the 2015 five-year file includes data down to the census tract level, plus block groups where available. (Please note that the Census Bureau has discontinued the three-year file, but all three-year files through 2011-13 are available on Social Explorer.
For more on the American Community Survey variables, methodology, and more, please visit our data dictionary.