Harper County is in Tallgrass Prairie Kansas. Of the 105 counties in the Jayhawk State, Harper County is 45th in terms of its size (802 square miles). There is roughly 1,000 acres of residential land and property for sale in Kansas's Harper County based on recent Land Network data. The combined market value of farms and ranches for sale here is roughly $4 million. The average price of residential acreage for sale in Harper County was $256,582. Browse all residential land and rural property for sale in Kansas 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.