
Barnesville
- County:
- Clay County
- County Seat:
- No
- Area (mi²):
- 2.12
- State:
- Minnesota
Barnesville is a city located in Clay County, Minnesota. Barnesville has a 2025 population of 2,768. Barnesville is currently growing at a rate of 0.04% annually and its population has increased by 0.22% since the most recent census, which recorded a population of 2,762 in 2020.
The average household income in Barnesville is $113,123 with a poverty rate of 6.44%. The median age in Barnesville is 34.5 years: 35.6 years for males, and 32.4 years for females.