A total of around 1,000 acres were listed for sale in Dunn County recently; the value of all Dunn County farms, ranches, and rural real estate for sale was around $4 million. Dunn County ranks 19th in North Dakota for the total number of acres of land currently advertised for sale. Dickinson had the most land for sale. Dunn County is one of the ten biggest counties in North Dakota (2,082 square miles). It's located in the West North Dakota region of North Dakota.