The combined value of farms, ranches, and rural real estate for sale in Mercer County, North Dakota, recently on Land.com was around $6 million. This represents approximately 1,000 acres of farms and ranches for sale in Mercer County. Mercer County ranks eighth in the Rough Rider State for the total number of acres of land currently advertised for sale. Of all land for sale in Mercer County, Beulah featured the most land for sale. Mining and mineral extraction-related services are the main economic drivers in this part of North Dakota. Mercer County is North Dakota's 35th largest county (1,112 square miles). It's located in the Central North Dakota region of the state.