
Nielsville
- County:
- Polk County
- County Seat:
- No
- Area (mi²):
- 0.289
- State:
- Minnesota
Nielsville is a city located in Polk County, Minnesota. Nielsville has a 2025 population of 75. Nielsville is currently declining at a rate of -1.32% annually and its population has decreased by -6.25% since the most recent census, which recorded a population of 80 in 2020.
The average household income in Nielsville is $44,167 with a poverty rate of 44.12%. The median age in Nielsville is 47.2 years: 53.5 years for males, and 29.3 years for females.