A total of almost 5,000 acres were listed for sale in Greer County recently, representing a combined almost $13 million in Greer County ranches, farms, hunting land and other rural land and acreage for sale. Greer County ranks 65th out of 77 counties in the Sooner State for the total number of acres of land currently advertised for sale. Mangum featured the most land for sale. From an economic perspective, government and state-level services contribute most to Greer County's overall GDP. Greer County is the 59th biggest county (643 square miles) in Oklahoma. It's located in the Great Plains Country Oklahoma region of Oklahoma.