Gem County is in Southwestern Idaho. Of the 44 counties in the Gem State, Gem County ranks 40th in terms of size (361,339 acres). Recent Land Network data totals nearly 1,000 acres of residential land and property for sale in Idaho's Gem County, which is valued at a combined $36 million. The average price of residential acreage for sale in Gem County was $2 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.