Twin Falls County is in South Central Idaho. Of the 44 counties in the Gem State, Twin Falls County is 13th in terms of its size (1 million acres). The total value of around 1,000 acres of residential land recently listed for sale in Twin Falls County, Idaho, was almost $45 million. The average price of residential acreage for sale in Twin Falls County was $1 million. 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.