Plymouth
- County:
- Grand Forks County
- County Seat:
- No
- Area (mi²):
- 36.02
- State:
- North Dakota
Plymouth is located in Grand Forks County, North Dakota. Plymouth has a 2025 population of 49 . Plymouth is currently declining at a rate of 0% annually and its population has decreased by -2% since the most recent census, which recorded a population of 50 in 2020.
The median age in Plymouth is 40.4 years: 0 years for males, and 0 years for females. For every 100 females there are 233.3 males.