South Crouch township
- County:
- Hamilton County
- County Seat:
- No
- Area (mi²):
- 25.166
- State:
- Illinois
South Crouch township is located in Hamilton County, Illinois. South Crouch township has a 2026 population of 193. South Crouch township is currently declining at a rate of -0.52% annually and its population has decreased by -3.02% since the most recent census, which recorded a population of 199 in 2020.
The median age in South Crouch township is 32.8 years: 36.3 years for males, and 32.7 years for females. For every 100 females there are 38.4 males.