Willow River
- County:
- Pine County
- County Seat:
- No
- Area (mi²):
- 1.753
- State:
- Minnesota
Willow River is a city located in Pine County, Minnesota. Willow River has a 2026 population of 396. Willow River is currently declining at a rate of 0% annually and its population has increased by 2.86% since the most recent census, which recorded a population of 385 in 2020.
The median household income in Willow River is $58,125 with a poverty rate of 13.82%. The median age in Willow River is 37.7 years: 37.5 years for males, and 38.5 years for females. For every 100 females there are 101.2 males.