Located in the southeastern part of the county, it borders the following townships: No municipalities are located in Vernon Township.

Statewide, other Vernon Townships are located in Clinton, Crawford, and Trumbull counties.

[4] The township derives its name from Mount Vernon, the estate of George Washington.

[5] In 1833, Vernon Township contained a blast steam furnace for melting ore, one gristmill and one saw mill, three stores, and a tanyard.

[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.