Vermillion township
- County:
- LaSalle County
- County Seat:
- No
- Area (mi²):
- 23.048
- State:
- Illinois
Vermillion township is located in LaSalle County, Illinois. Vermillion township has a 2026 population of 378. Vermillion township is currently declining at a rate of 0% annually and its population has decreased by -1.05% since the most recent census, which recorded a population of 382 in 2020.
The median household income in Vermillion township is $74,375 with a poverty rate of 20.54%. The median age in Vermillion township is 48.6 years: 31.2 years for males, and 50.5 years for females. For every 100 females there are 136.4 males.