Franklin County is in Southeastern Idaho. Of the 44 counties in the state, Franklin County ranks 37th in terms of size (667 square miles). Idaho's Franklin County includes roughly 1,000 acres of residential land and property for sale based on recent Land Network data. The combined market value of ranches, farms, hunting land and other rural land and acreage for sale here was almost $25 million. The average price of residential land for sale in Franklin County was $691,613. The economy here is largely agricultural. Browse all residential land and rural property for sale in Idaho to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.