[1] According to the 2021 census gazetteer files, Belmont Township has a total area of 36.32 square miles (94.07 km2), all land.

The township contains these four cemeteries: Belmont, Body, Iroquois Memorial Park and Keen.

As of the 2020 census[1] there were 2,410 people, 1,094 households, and 725 families residing in the township.

There were 1,139 housing units at an average density of 31.36 per square mile (12.11/km2).

27.30% of all households were made up of individuals, and 17.50% had someone living alone who was 65 years of age or older.