
O'Brien township
- County:
- Beltrami County
- County Seat:
- No
- Area (mi²):
- 35.813
- State:
- Minnesota
O'Brien township is located in Beltrami County, Minnesota. O'Brien township has a 2025 population of 45. O'Brien township is currently declining at a rate of 0% annually and its population has decreased by -2.17% since the most recent census, which recorded a population of 46 in 2020.
The average household income in O'Brien township is $49,961 with a poverty rate of 14.81%. The median age in O'Brien township is 59.9 years: 60.5 years for males, and 59.6 years for females.