The census is mandated by the U.S. Constitution and happens once every 10 years. It serves as a count of everyone living in the United Sates. The census will take place from March 12th through July 2020. In 2020, participation in the census will be more convenient than ever. For most of New Mexico’s residents, the census can be completed online, over the phone, or on paper — all in the privacy of your own home.