Of 53 counties in the state, Mercer County ranks 35th by size (1,112 square miles). Mercer County is in Central North Dakota. Recent listings of ranches for sale in North Dakota's Mercer County totals nearly 1,000 acres and a combined market value of roughly $7 million. The most common type of land for sale by combined acreage in Mercer County is residential property. Browse all Mercer County ranches for sale on the Land Network to find the ranch that's right for your business or commercial needs, from the sprawling legacy ranch to unbelievable residential ranch for your second home, investment property or retirement nest egg. The most common type of land for sale by combined acreage in Mercer County is residential property.