The Apache-Sitgreaves National Forest is a 2.76-million-acre (11,169 km sq) United States National Forest which runs along the Mogollon Rim and the White Mountains in east-central Arizona and extending into New Mexico, USA. Both forests are managed as one unit by USDA Forest Service from the forest headquarters in Springerville, Arizona. Apache-Sitgreaves has over 400 species of wildlife. With its high elevation and cool summer breezes it is a popular weekend destination from the hot desert for Phoenix, Arizona residents. The forest is divided into 5 Ranger Districts (Clifton, Alpine, Springerville, Lakeside, and Black Mesa) that span almost 300 miles (480 km) from Clifton, Arizona in the east-central portion of Arizona to the eastern boundary of the Coconino National Forest in north-central Arizona. The Apache-Sitgreaves National Forest borders the western and northern borders of the Fort Apache Indian Reservation. It is located in parts of Greenlee, Apache, Navajo, and Coconino counties in eastern and east-central Arizona, and Catron County in western New Mexico.