The 2020 census found 2,952 people in the township.

[3] Located in the western part of the county, it borders the following townships: The village of Hamersville is located in central Clark Township.

[4] Statewide, other Clark Townships are located in Clinton, Coshocton, and Holmes counties.

The township is governed by a three-member board of trustees, who are elected in November of odd-numbered years to a four-year term beginning on the following January 1.

There is also an elected township fiscal officer,[5] who serves a four-year term beginning on April 1 of the year after the election, which is held in November of the year before the presidential election.