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 (1,928 square miles). Twin Falls County, Idaho, includes almost 1,000 acres of residential land and property for sale based on recent Land Network data. The combined market value of farms and ranches for sale here was approximately $122 million. The average price of residential land for sale in Twin Falls County was $783,853. 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.