Land for sale in Benson County, North Dakota, recently totaled almost $1 million and nearly 1,000 acres. Benson County ranks 31st in the Rough Rider State for the combined amount of land currently advertised for sale. Minnewaukan featured the most land for sale. Benson County has a large agricultural economy, with 563 farms recorded in the county during the latest U.S. Census. Farming activities in Benson County generate annual revenues of $10 million, most of which is from crops. Benson County is North Dakota's 19th biggest county (1,439 square miles). It's located in the Northeast North Dakota region of North Dakota.