Kay County is in Red Carpet Country Oklahoma. Of the 77 counties in the Sooner State, Kay County ranks 27th in terms of size (944 square miles). Kay County, Oklahoma, includes almost 1,000 acres of residential land for sale based on recent Land Network data. The combined market value of land and rural real estate for sale here was about $5 million. The average price of residential acreage for sale in Kay County was $329,362. 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.