Date(s) - 01/04/2020
Census Day is observed nationwide. By this date, every home will receive an invitation to participate in the 2020 Census. Once the invitation arrives, you should respond for your home in one of three ways: online, by phone, or by mail. When you respond to the census, you’ll tell the Census Bureau where you live as of April 1, 2020.
More details: https://2020census.gov/en/important-dates.html