The Hopi are a Native American tribe, who primarily live on the  Hopi Reservation in northeastern Arizona. As of 2010, there were 18,327 Hopi in the United States, according to the 2010 census. The Hopi language is one of the 30 of the Uto-Aztecan language family. The majority of Hopi people are enrolled in the Hopi Tribe of Arizona but some are enrolled in the Colorado River Indian Tribes.