| Measuring America's People, Places, and Economy
Source: U.S. Census Bureau, 2021 American Community Survey 1-Year Estimates
Although the American Community Survey (ACS) produces population, demographic and housing unit estimates, it is the
Census Bureau's Population Estimates Program that 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.
Supporting documentation on code lists, subject definitions, data accuracy, and statistical testing can be found on the
American Community Survey website in the Technical Documentation section.
Sample size and data quality measures (including coverage rates, allocation rates, and response rates) can be found on the
American Community Survey website in the Methodology section.
Data are based on a sample and are subject to sampling variability. The degree of uncertainty for an estimate arising from
sampling variability is represented through the use of a margin of error. The value shown here is the 90 percent margin of
error. The margin of error can be interpreted roughly as providing a 90 percent probability that the interval defined by the
estimate minus the margin of error and the estimate plus the margin of error (the lower and upper confidence bounds)
contains the true value. In addition to sampling variability, the ACS estimates are subject to nonsampling error (for a
discussion of nonsampling variability, see ACS Technical Documentation). The efect of nonsampling error is not represented
in these tables.