Willow River, MN
Willow River is a city in Pine County, Minnesota, United States, at the confluence of the Kettle and Willow Rivers. The population was 415 at the 2010 census.
Interstate 35, County Road 43, and County 61 (Cross Street) are three of the main routes in the community.
According to the United States Census Bureau, the city has a total area of 1.7 square miles (4.5 km²), of which, 1.6 square miles (4.1 km²) of it is land and 0.2 square miles (0.4 km²) of it (8.72%) is water.