As of the 2020 census, its population was 914 (down from 939 at 2010[3]) and it contained 438 housing units.

[4] Sugar Ridge Township organized in 1854.

It was named from a high ridge passing through its central portion.

(This list is based on USGS data and may include former settlements.)

The township contains three cemeteries: Gremes, Harris and Moss.