Blackwater
- County:
- McLean County
- County Seat:
- No
- Area (mi²):
- 35.344
- State:
- North Dakota
Blackwater is located in McLean County, North Dakota. Blackwater has a 2025 population of 40 . Blackwater is currently growing at a rate of 2.56% annually and its population has increased by 2.56% since the most recent census, which recorded a population of 39 in 2020.
The median age in Blackwater is 38.7 years: 35.6 years for males, and 41.3 years for females. For every 100 females there are 183.9 males.