What's "Census Bureau"? What do they do?

Native speaker’s answer
Rebecca
The United States Census Bureau (USCB), or just the "Census Bureau", is responsible for collecting information and creating data about the American people and economy. The Census Bureau is part of the U.S. Department of Commerce and its director is appointed by the President of the United States. The Census Bureau's mission is to serve as the nation’s leading provider of quality data about its people and economy.