According to the 2021 census gazetteer files, Lovejoy Township has a total area of 34.69 square miles (89.85 km2), all land.

[2] The township contains these two cemeteries: Amity and Floral Hill.

As of the 2020 census[1] there were 382 people, 160 households, and 121 families residing in the township.

There were 174 housing units at an average density of 5.02 per square mile (1.94/km2).

20.00% of all households were made up of individuals, and 13.80% had someone living alone who was 65 years of age or older.