Marion County is in Coastal Mississippi. Of the 82 counties in the Hospitality State, 351,117-acre Marion County ranks 45th by size. Mississippi's Marion County includes approximately 1,000 acres of residential land for sale based on recent Land Network data. The combined market value of farmsand rural real estate for sale here was almost $7 million. The average price of residential acreage for sale in Marion County was $237,811. Browse all residential land and rural property for sale in Mississippi 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.