New Jersey population data is based on the decennial Census which counts the U.S. population every ten years. For non-census years that do not include the U.S. Census population count, estimated data are from the New Jersey State Data Center or from the American Community Survey (ACS) conducted by the Bureau of the Census, using the 5-year sampling.
Governments and businesses use census counts for funding allocations, to inform policy, and to aid in city planning. The calculations frequently rely on the ACS and Census counts, with notations as to which population count is used. Accurate reporting of the population down to the municipal level is possible using the decennial Census, the 5-year estimated ACS population figures, or the estimates of the New Jersey State Data Center.
Changes in measures of the population and demographics can provide insights into the changing structure, social and economic challenges, and opportunities facing municipalities in New Jersey.
Use the New Jersey Data Book to find New Jersey population data by municipality, county, Congressional District, or Legislative District.