Boise County is in Southwestern Idaho. Of the 44 counties in the Gem State, Boise County ranks 15th in terms of size (1,906 square miles). Recent listings of residential land and property for sale in Boise County, Idaho, totals about 1,000 acres and a combined market value of roughly $7 million. The most common type of land for sale by combined acreage in Boise County is undeveloped land. The average price of residential land for sale in Boise County was $638,090. 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.