Community Survey (ACS) is a nationwide survey
designed to provide communities a fresh look at how they are
changing. The ACS replaced the decennial census long form in
2010 and thereafter by collecting long form type information
throughout the decade rather than only once every 10 years.
Questionnaires are mailed
to a sample of addresses to obtain information about
households that is, about each person and the housing unit
The American Community
Survey produces demographic, social, housing and economic
estimates in the form of 1-year and 5-year estimates based on
population thresholds. The strength of the ACS is in
estimating population and housing characteristics. It produces
estimates for small areas, including census tracts and
Although the ACS produces
population, demographic and housing unit estimates, the Census
Bureau's population estimates program produces and
disseminates the official estimates of the population for the
nation, states, counties, cities and towns, and estimates of
housing units for states and counties.
For 2010 and other
decennial census years, the Decennial Census provides the
official counts of population and housing units.