There was a combined approximately $6 million of land for sale in Mercer County recently on Land.com. The total size of all Mercer County land for sale was around 1,000 acres. Mercer County ranks ninth out of 53 counties in North Dakota for the total acreage of land currently advertised for sale. Of all farms and ranches for sale in Mercer County, Beulah had the most land for sale. Economically speaking, Mercer County's is largely dependent on mining and mineral extraction-related businesses and services. Mercer County is North Dakota's 35th largest county (1,112 square miles). It's located in the Central North Dakota region of North Dakota.