What is the Decennial Census? The U.S. Census counts every
resident in the United States. It is mandated by Article I,
Section 2 of the Constitution and takes place every 10 years.
Why is the Decennial Census Important? The data collected by the
decennial census is used to: distribute billions in federal
funds for education, transportation, social services, etc., to
local communities. Why Take a Census? View the video "The Census
in the Constitution." How has the U.S. Census changed over the
years? View the video "How Do We Know About Our Nation?"