Benson County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 5,964. Its county seat is Minnewaukan. The county was created on March 9, 1883 by the Dakota Territory legislature, and was named for Bertil W. Benson, a Dakota Territory legislator at the time. The county government was organized on June 4, 1884, and its boundary lines were altered by two legislative actions in 1885.