The Lewisburg Armory was added to the National Register of Historic Places in 1991.

[3] According to the United States Census Bureau, the township has a total area of 15.6 square miles (40 km2), all land.

The only CDP within the township is Linntown, adjacent to the southwestern side of Lewisburg.

There were 1,894 housing units at an average density of 121.1 per square mile (46.8/km2).

18.7% of all households were made up of individuals, and 8.3% had someone living alone who was 65 years of age or older.