The value of all farms and ranches for sale in Mountrail County recently was around $3 million, representing a total of 85 acres of land for sale in Mountrail County. Mountrail County ranks 14th out of 53 counties in the Sioux State for the combined amount of land currently advertised for sale. Stanley featured the most land for sale. Economically speaking, Mountrail County's is largely dependent on mining and mineral extraction-related businesses and services. Mountrail County is one of the ten largest counties in North Dakota (1,941 square miles). It's located in the Central North Dakota region of North Dakota.