Calhoun County is in Western Iowa. Of the 99 counties in the Cyclone State, 572-square-mile Calhoun County ranks 52nd by size. The most common type of land for sale by combined acreage in Calhoun County is house. Browse all residential property and land for sale in Calhoun County 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.