The unincorporated community of Black Hammer is located in the township.

According to the United States Census Bureau, the township has a total area of 35.7 square miles (92 km2), all land.

There were 132 housing units at an average density of 3.7 per square mile (1.4/km2).

17.1% of all households were made up of individuals, and 5.4% had someone living alone who was 65 years of age or older.

A history of the county from 1882 tells the story of how the name came about: Knud Olson Bergo, who was living just across the town line in Spring Grove, on getting up one morning, saw that a fire had swept over the prairie in the south part of the town...Its charred appearance at once suggested to his mind a certain bluff located in Slidre Valders, Norway, which was Mr. Bergo's birthplace, and so he exclaiming in Norwegian, "Sort Hammer," which signifies Black Bluff, and the people have had the good sense to retain the name to this day, which, it will be perceived, is composed of an English and a Norwegian word.