Mills County is in Western Iowa. Of the 99 counties in the Cyclone State, Mills County ranks 80th in terms of size (440 square miles). The total value of almost 1,000 acres of residential land recently listed for sale in Mills County, Iowa, was nearly $14 million. The average price of residential land for sale in Mills County was $597,310. Browse all residential land and rural property for sale in Iowa 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.