Delaware County is in Eastern Iowa. Of the 99 counties in the Cyclone State, 578-square-mile Delaware County ranks 35th by size. Iowa's Delaware County includes roughly 1,000 acres of residential land and property for sale based on recent Land Network data. The combined market value of land and rural real estate for sale here was almost $11 million. The average price of residential acreage for sale in Delaware County was $416,835. 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.