There was a combined approximately $15 million of farms, ranches, and rural real estate for sale in Harper County recently on Land.com. The total of all Harper County farms and ranches for sale was almost 4,000 acres. Harper County ranks 44th out of 105 counties in Kansas for the total acreage of land currently advertised for sale. Anthony featured the most land for sale. Mining and mineral extraction-related services are the main economic drivers in this part of Kansas. Harper County is the 45th largest county (802 square miles) in Kansas. It's located in the Tallgrass Prairie Kansas region of the state.