Marion County is in Northeast Missouri. Of the 115 counties in the Gateway State, 284,353-acre Marion County ranks 97th by size. There is almost 1,000 acres of residential land and property for sale in Marion County, Missouri, based on recent Land Network data. The combined market value of land and rural real estate for sale here is $10 million. The average price of residential acreage for sale in Marion County was $278,733. Browse all residential land and rural property for sale in Missouri 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.