First Mesa (Hopi: Wàlpi) is a census-designated place (CDP) in Navajo County, Arizona, United States, on the Hopi Reservation. As of the 2010 census, the CDP population was 1,555, spread among three Hopi villages atop the 5,700-foot (1,740 m) mesa: Hano (or Tegua, Arizona), Sitsomovi (or Sichomovi), and Waalpi (or Walpi).