Adair County is in Northeast Missouri. Of the 115 counties in the Ozark State, Adair County is 62nd in terms of its size (569 square miles). There is around 1,000 acres of residential land for sale in Missouri's Adair County based on recent Land Network data, making it the most common type of land for sale in Adair County. The combined market value of land for sale here is roughly $17 million. The average price of residential acreage for sale in Adair County was $431,246. 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.