La Belle
- County:
- Marshall County
- County Seat:
- No
- Area (mi²):
- 41.876
- State:
- South Dakota
La Belle is located in Marshall County, South Dakota. La Belle has a 2025 population of 56 . La Belle is currently declining at a rate of 0% annually and its population has increased by 1.82% since the most recent census, which recorded a population of 55 in 2020.
The average household income in La Belle is $112,523 with a poverty rate of 0%. The median age in La Belle is 34.8 years: 34.9 years for males, and 32.9 years for females. For every 100 females there are 137.0 males.