Deep River
- County:
- McHenry County
- County Seat:
- No
- Area (mi²):
- 36.067
- State:
- North Dakota
Deep River is located in McHenry County, North Dakota. Deep River has a 2025 population of 38. Deep River is currently declining at a rate of -2.56% annually and its population has decreased by -9.52% since the most recent census, which recorded a population of 42 in 2020.
The median age in Deep River is 10.6 years: 10.5 years for males, and 38.1 years for females.