All U.S. residents must be counted—both citizens and non citizens. More detailed socioeconomic information previously collected through the decennial census will be asked of a small percentage of the population through the annual American Community Survey.
The U.S. Census counts every resident in the United States, and is required by the Constitution to take place every 10 years. The 2010 Census will help communities receive more than $400 billion in federal funds each year.