As of the census[1] of 2000, there were 391 people, 141 households, and 119 families residing in the township.

The racial makeup of the township was 99.23% White, 0.26% Native American, 0.26% Asian, and 0.26% from two or more races.

13.5% of all households were made up of individuals, and 7.1% had someone living alone who was 65 years of age or older.

Beaver Creek Township is located in Minnesota's 1st congressional district, represented by Mankato educator Tim Walz, a Democrat.

At the state level, Beaver Creek Township is located in Senate District 22, represented by Republican Doug Magnus, and in House District 22A, represented by Republican Joe Schomacker.