[1] East Bend Township was named for a meander of the Sangamon River.

As of the 2020 census[1] there were 623 people, 327 households, and 302 families residing in the township.

There were 261 housing units at an average density of 7.21 per square mile (2.78/km2).

The racial makeup of the township was 92.46% White, 0.80% African American, 0.64% Native American, 0.00% Asian, 0.16% Pacific Islander, 0.16% from other races, and 5.78% from two or more races.

5.20% of all households were made up of individuals, and 2.80% had someone living alone who was 65 years of age or older.