Seminole County is in Frontier Country Oklahoma. Of the 77 counties in the Sooner State, Seminole County is 61st in terms of its size (640 square miles). The total value of around 1,000 acres of residential land recently listed for sale in Oklahoma's Seminole County was roughly $12 million. The average price of residential land for sale in Seminole County was $224,737. Browse all residential land and rural property for sale in Oklahoma 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.