[1] According to the 2021 census gazetteer files, Wethersfield Township has a total area of 35.56 square miles (92.10 km2), all land.

The township contains these four cemeteries: Cavanagh, Evergreen Memory Garden, Saxon and Wethersfield.

As of the 2020 census[1] there were 3,792 people, 1,537 households, and 1,030 families residing in the township.

There were 1,840 housing units at an average density of 51.74 per square mile (19.98/km2).

28.60% of all households were made up of individuals, and 21.10% had someone living alone who was 65 years of age or older.