Osage County is in Central Missouri. Of the 115 counties in the Show Me State, 613-square-mile Osage County ranks 54th by size. There is approximately 1,000 acres of residential land and property for sale in Missouri's Osage County based on recent Land Network data. The combined market value of land and rural real estate for sale here is $9 million. The average price of residential acreage for sale in Osage County was $572,300. 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.