Ludlow is Township 22 North, Range 9 East of the Third Principal Meridian.

The township contains five cemeteries: Ludlow, Maplewood, Mennonite, Miller and Mount Hope.

As of the 2020 census[1] there were 4,077 people, 2,017 households, and 1,148 families residing in the township.

There were 2,078 housing units at an average density of 56.69 per square mile (21.89/km2).

38.50% of all households were made up of individuals, and 16.30% had someone living alone who was 65 years of age or older.