Grand Forks County
county in North Dakota, United States
Key facts
- Country
- United States
- State
- North Dakota
- Founded
- January 4, 1873 (created), March 2, 1875 (organized)
- Seat
- Grand Forks
- Largest city
- Grand Forks
- Total
- 1,439.418 sq mi (3,728.08 km )
- Land
- 1,436.216 sq mi (3,719.78 km )
- Water
- 3.202 sq mi (8.29 km ) 0.22%
- Estimate 2025
- 74,501
- Density
- 50.95/sq mi (19.67/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
Article
Grand Forks County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 73,170, and was estimated to be 74,501 in 2025, making it the third-most populous county in North Dakota. The county seat and the largest city is Grand Forks.
Grand Forks County is included in the Grand Forks Metropolitan statistical area, aka Greater Grand Forks or Grand Cities area, with its core cities being Grand Forks ND and East Grand Forks MN.