Of 44 counties in the Gem State, Owyhee County ranks second in terms of size (7,696 square miles). Owyhee County is in the Southwestern Idaho region. Recent listings of residential land for sale in Idaho's Owyhee County totals nearly 1,000 acres and a combined market value of nearly $15 million. The most common type of land for sale by combined acreage in Owyhee County is house. The average price of residential acreage for sale in Owyhee County was $699,763. 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.