The American
Community Survey (ACS) is a large, continuous demographic survey
conducted by the Census Bureau that provides accurate and up-to-date
profiles of America's communities every year. Questionnaires are mailed
to a sample of addresses to obtain information about households -- that
is, about each person and the housing unit itself. The survey produces
annual and multi-year estimates of population and housing
characteristics and produces data for small areas, including tracts and
population subgroups. Data are limited to the household population and
exclude the population living in institutions, college dormitories, and
other group quarters.