The decennial census has been conducted in years ending in "0" since 1790. Accordingly, a census is taken every 10 years.
Since the decennial census is taken every 10 years the Census Bureau initiated the American Community Survey (ACS) to sample subsections of the population for daily polling, business intelligence, and statistical inquisitiveness purposes. The ACS is a rolling sample survey that gets its annual data from three annual datasets, that being the 1 year, 3 year, and 5 year estimates - although the 3 year estimates were discontinued after 2013. Knowing the difference between the decennial census and ACS surveys will help when browsing data.
Rider University Moore Library is a Federal depository library since 1976 and is now collecting mostly electronic federal documents. This Guide is created to help you access and use the current and the past U.S. census.
The Guide takes resources from University of Denver LibGuide https://libguides.du.edu/c.php?g=90231&p=7251841
Questions, ask NJ State Data Center 609-984-2595.