Land for sale in Harper County recently totaled nearly $9 million and 4,000 acres. Harper County ranks 69th in the Sooner State for the combined amount of land currently advertised for sale. Among cities in Harper County with farms, ranches, hunting land and other land for sale, Buffalo featured the most land for sale. Its economy is defined as agricultural, with 532 farms recorded in the county during the most recent U.S. Census. Farming activities in Harper County generate annual revenues of $3 million, the majority of which comes from livestock products. Harper County is Oklahoma's 17th biggest county (1,041 square miles). It's located in the Red Carpet Country Oklahoma region of Oklahoma.