The 2020 census reported 16,318 people living in the township.

Located in the northern part of the county, it borders the following townships: It is the most northerly township in Columbiana County.

One city is located in Perry Township: The census-designated place of Salem Heights is on the western edge of the township, along U.S. Route 62 (West State Street).

[6] 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,[7] 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.