Harmon County is in Great Plains Country Oklahoma. Of the 77 counties in the state, Harmon County ranks 71st in terms of size (538 square miles). The total value of roughly 2,000 acres of recreational land and property recently listed for sale in Oklahoma's Harmon County was roughly $4 million. The average price of recreational property for sale in Harmon County was $755,800. The economy here is mainly agricultural. Browse all recreational property for sale in Oklahoma to find the recreational tract that suits your lifestyle needs, from hunting and fishing properties for the outdoor enthusiast to undeveloped acreage ready for future residential-property development.