San Pedro Valley (Arizona)

San Pedro Valley
Valley
Prairie in the San Pedro Valley near Tombstone, Arizona. The Dragoon Mountains are in the background.
Country	United States
States	Arizona, Sonora
Region	(northeast)-Sonoran Desert
Districts	Cochise (county), USA, Sonora (state), Mexico
Borders on	Rincon, Whetstone & Huachuca Mtns-W Little Dragoon, Dragoon & Mule Mtns-E
Communities	Benson, AZ, Tombstone, AZ, Sierra Vista Southeast, AZ, Naco, SON
Landmark	Kartchner Caverns State Park
River	San Pedro River
Coordinates	31°38′9″N 110°10′21″W / 31.63583°N 110.17250°W / 31.63583; -110.17250Coordinates: 31°38′9″N 110°10′21″W / 31.63583°N 110.17250°W / 31.63583; -110.17250
Length	50 mi (80 km)
(far south river site) San Pedro Valley of Arizona, USA and Sonora, Mexico

The San Pedro Valley of western Cochise County Arizona is a 50-mile-long (80 km), mostly north–south valley, trending northwesterly. It drains from the State of Sonora, Mexico, through Benson, Arizona, and the southeast of the Rincon Mountains.

The coordinates for Charleston, Arizona, south center of the valley are 31,38,9-N, 110,10,21-W.