The Western Apache live primarily in east central Arizona, in the United States and north of Mexico in the states of Sonora and Chihuahua. Most live within reservations. The Fort Apache Indian Reservation, San Carlos Apache Indian Reservation, Yavapai-Apache Nation, Tonto Apache, and the Fort McDowell Yavapai Nation are home to the majority of Western Apache and are the bases of their federally recognized tribes. In addition, there are numerous bands. The Western Apache bands call themselves Ndee (Indé). Because of dialectical differences, the Pinaleño/Pinal and Arivaipa/Aravaipa bands of the San Carlos Apache pronounce the word as Innee or Nnēē:.

The Fort Apache Indian Reservation is an Indian reservation in Arizona, United States, encompassing parts of Navajo, Gila, and Apache counties. It is home to the federally recognized White Mountain Apache Tribe of the Fort Apache Reservation, a Western Apache tribe. It has a land area of 1.6 million acres and a population of 12,429 people as of the 2000 census. The largest community is in Whiteriver.