The Gila Valley of Graham County, Arizona is a 35 mile (56 km) long valley in central Graham County, Arizona. Thatcher and Safford, Arizona lie upstream on the Gila River in the southeast beginning of the valley.The elevation of the river valley upstream at Safford, is 2,906 feet (886 m).The Gila Valley region along the river, contains the most populated areas of the Safford micropolitan area.