
Sandwich township
- County:
- DeKalb County
- County Seat:
- No
- Area (mi²):
- 15.264
- State:
- Illinois
Sandwich township is located in DeKalb County, Illinois. Sandwich township has a 2025 population of 7,604. Sandwich township is currently growing at a rate of 0.68% annually and its population has increased by 1.21% since the most recent census, which recorded a population of 7,513 in 2020.
The average household income in Sandwich township is $91,281 with a poverty rate of 7.04%. The median age in Sandwich township is 39.4 years: 37.3 years for males, and 41.1 years for females.