The United States is mandated by the Constitution to count its population once each decade. Data collected by the decennial census determines the number of seats each state has in the U.S. House of Representatives (a process called apportionment) and the distribution of billions in federal funds to local communities.
The Census Bureau's Population Estimates Program (PEP) produces annual estimates of the population for the United States, individual states, Puerto Rico, metropolitan and micropolitan statistical areas, counties, cities, and towns.
The American Community Survey (ACS) is an ongoing survey that provides vital information on a yearly basis about our nation and its people. It helps local officials, community leaders, and businesses understand the demographic changes taking place in their communities.
The U.S. Census Bureau collects extensive statistics about businesses that are essential to understanding the American economy. This Economic Census serves as the foundation for the measurement of U.S. businesses and their economic impact.