Green Valley, Arizona, is an unincorporated, census designated population (CDP) located 25 miles south of Tucson, Arizona, and 40 miles north of Nogales, Arizona. The major transportation corridor, Interstate-19, which joins Tucson and Nogales in Arizona and Mexico, is destined to become one of the focal points for a commercial corridor planned by Sun Corridor, Inc.
According to the US Census Bureau, the Green Valley CDP has a total area of 26.3 square miles. However, the majority of the residents are dispersed along a 10-mile-long ribbon, running parallel to I-19 and the Santa Cruz River Valley. It is flanked by the soaring Santa Rita Mountains on the East and the reclaimed talus slopes of the copper mines on the West.