A total of around 3,000 acres were listed for sale in Harper County recently, representing a combined $4 million in Harper County land and rural real estate for sale. Harper County ranks 77th out of 77 counties in the Sooner State for the total acreage of land currently advertised for sale. Of all land for sale in Harper County, Buffalo had the most land for sale. Agriculture and farming drives the Harper County economy, with 532 farms recorded in the county during the U.S. Census in 2012. 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 largest county (1,041 square miles). It's located in the Red Carpet Country Oklahoma region of the state.