South Valley
- County:
- Rolette County
- County Seat:
- No
- Area (mi²):
- 35.947
- State:
- North Dakota
South Valley is located in Rolette County, North Dakota. South Valley has a 2025 population of 31 . South Valley is currently declining at a rate of -3.13% annually and its population has decreased by -8.82% since the most recent census, which recorded a population of 34 in 2020.
The median age in South Valley is 64.4 years: 0 years for males, and 0 years for females. For every 100 females there are 122.2 males.