Rice River Road runs north–south through the south–central portion of the township.
Sandy Township is located within the unincorporated area of Britt.
Sandy Township is located within the Superior National Forest.
Britt Creek flows through the southwest part of the township.
The racial makeup of the township was 98.95% White, 0.52% African American, and 0.52% from two or more races.
22.8% of all households were made up of individuals, and 8.0% had someone living alone who was 65 years of age or older.