Moenkopi is a census-designated place in Coconino County, Arizona, United States, adjacent to the southeast side of Tuba City off U.S. Route 160. The population was 964 at the 2010 census. A Hopi community, it was founded in 1870 as a summer farming area by people from the Hopi Third Mesa village of Oraibi. It is 40 miles west of Third Mesa and is divided into the villages of Upper Moenkopi and Lower Moenkopi.