The value of all land for sale in McKenzie County, North Dakota, recently was approximately $3 million, representing a total of 208 acres of land for sale in McKenzie County. McKenzie County ranks 12th out of 53 counties in the Peace Garden State for the total number of acres of land currently advertised for sale. Of all farms and ranches for sale in McKenzie County, Watford City had the most land for sale. Economically speaking, McKenzie County's is largely dependent on mining and mineral extraction-related businesses and services. McKenzie County is the largest county in North Dakota (2,860 square miles). It's located in the West North Dakota region of North Dakota.