Grand Forks County, North Dakota: History
Using territory annexed from Pembina County, the Dakota Territory legislature created Grand Forks County on January 4, 1873. Its governing structure was not established at that time, nor was the territory attached to another county for administrative and judicial purposes. The government was organized on March 2, 1875.
The county's boundaries were altered in 1875, 1881, and 1883. It has retained its present boundary since 1883.
Grand Forks County is included in the Greater Grand Forks (officially the Grand Forks, ND-MN Metropolitan Statistical Area).