The 2010 Census is like a Portrait of America to be taken on April 1, 2010. What: The census will be a count of everyone residing in the United States on April 1, 2010 (all citizens and non-citizens alike). When: You will receive your questionnaire in March 2010 either by US mail or hand delivery. Some people in remote areas will be counted in person. Why: Since 1790, the US Constitution has required a national census once every 10 years to count our population. How: Households complete a simple form (now only 10 questions) by listing all people who live in the home as their “usual residence”, where they live and sleep most of the time. Utah residents count!