
Sugar Loaf township
- County:
- St. Clair County
- County Seat:
- No
- Area (mi²):
- 30.577
- State:
- Illinois
Sugar Loaf township is located in St. Clair County, Illinois. Sugar Loaf township has a 2025 population of 6,523. Sugar Loaf township is currently declining at a rate of -1.21% annually and its population has decreased by -5.91% since the most recent census, which recorded a population of 6,933 in 2020.
The average household income in Sugar Loaf township is $84,098 with a poverty rate of 7.37%. The median age in Sugar Loaf township is 34.8 years: 33.6 years for males, and 39 years for females.