Seward township
- County:
- Winnebago County
- County Seat:
- No
- Area (mi²):
- 35.806
- State:
- Illinois
Seward township is located in Winnebago County, Illinois. Seward township has a 2026 population of 840. Seward township is currently growing at a rate of 0.6% annually but its population has decreased by -0.47% since the most recent census, which recorded a population of 844 in 2020.
The median household income in Seward township is $100,583 with a poverty rate of 5.93%. The median age in Seward township is 37.5 years: 35.8 years for males, and 38 years for females. For every 100 females there are 98.7 males.