Nelson County, North Dakota: History
The Dakota Territory legislature created Nelson County on March 2, 1883, with areas annexed from Foster, Grand Forks and Ramsey counties, and with some previously unorganized area. It was not organized at that time, but was attached to Grand Forks County for administrative and judicial purposes. Its proposed boundary was enlarged on March 9, 1883, and on June 9, 1883, the county organization was effected and the administrative attachment to Grand Forks County was terminated.