The 2020 census found 2,777 people in the township, 560 of whom lived in the village of Caledonia.

Located in the eastern part of the county, it borders the following townships: The village of Caledonia is located in northeastern Claridon Township.

Statewide, the only other Claridon Township is located in Geauga County.

During the early formation of Marion County, the community of Claridon was considered as a possible location for the Marion County's county seat, however it lost out to the more centrally located village of Marion, Ohio.

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.