Of 77 counties in the Sooner State, Harper County ranks 17th by size (1,041 square miles). Harper County is in Red Carpet Country Oklahoma. There is almost 2,000 acres of ranches for sale in Harper County, Oklahoma, based on recent Land Network data. The combined market value of farms, ranches, hunting land and other land for sale here is approximately $2 million. Browse all Harper County ranches for sale on the Land Network to find the ranch that's right for your business or commercial needs, from the sprawling legacy ranch to unbelievable residential ranch for your second home, investment property or retirement nest egg. The most common type of land for sale by combined acreage in Harper County is hunting land.