The Navajo Nation is split into seven districts, each with a field station: Window Rock, Arizona (1), Shiprock, New Mexico (2), Crownpoint, New Mexico (3), Tuba City, Arizona (4), Chinle, Arizona (5), Kayenta, Arizona (6), and Dilkon, Arizona (7). The Chinle sub-agency is the fifth district and was founded after 1901. In 1949 when Window Rock was made into the main agency the Chinle agency was demoted to a sub-agency.