Unincorporated places in the township include East Sharpsburg, Dumb Hundred, and Ore Hill.

According to the United States Census Bureau, the township has a total area of 23.4 square miles (60.5 km2), all land.

There were 909 housing units at an average density of 39.3 per square mile (15.2/km2).

17.1% of all households were made up of individuals, and 8.6% had someone living alone who was 65 years of age or older.

A portion of Pennsylvania State Game Lands Number 147 is located on Dunning Mountain.