If you reside in the United States or one of its five territories (Puerto Rico, American Samoa, the Commonwealth of the Northern Mariana Islands, Guam, and the U.S. Virgin Islands) it is required by law to be counted in the 2020 Census—citizen or not. The U.S. has counted its population every 10 years since 1790. Expect to receive an invitation to respond to the 2020 Census between March 12-20 that will ask for a response online, by phone, or mail. Census results determine how billions of federal funding dollars are allocated to communities for schools, roads, and other public services. Results from the 2020 Census also help determine seats that each state holds in Congress.