The value of all farms, ranches, and rural real estate for sale in Pima County recently was nearly $718 million, representing a total of 10,802 acres of land for sale in Pima County. Pima County ranks sixth out of 15 counties in the state for the total acreage of land currently advertised for sale. Of all locations in Pima County with farms, ranches, hunting land and other land for sale, Tucson featured the most land for sale. Pima County is one of the ten biggest counties in Arizona (9,189 square miles). It's located in the Tucson & Southern Arizona region of Arizona.