Poplar River Township is a township in Red Lake County, Minnesota, United States.

As of 2022, according to City population, it was estimated to be at 115.

[3] This township took its name from the Poplar River.

[4] According to the United States Census Bureau, the township has a total area of 34.9 square miles (90.5 km2), all land.

According to a 2021 census the Median age is 64.8.