Cochise County is a large rural county on the far southeastern corner of Arizona that shares its borders with Mexico and New Mexico. Land for sale in Cochise County, Arizona, recently totaled $267 million and almost 100,000 acres. Cochise County ranks seventh based on the combined acreage of land for sale of the 15 counties in the Copper State. Among cities in Cochise County with farms, ranches, hunting land and other land for sale, Hereford featured the most land for sale. From an economic perspective, government and state-level services contribute most to Cochise County's overall GDP. Cochise County is one of the ten biggest counties in Arizona (6,217 square miles). It's located in the Tucson & Southern Arizona region of the state.