
Lacon township
- County:
- Marshall County
- County Seat:
- No
- Area (mi²):
- 17.352
- State:
- Illinois
Lacon township is located in Marshall County, Illinois. Lacon township has a 2025 population of 2,341. Lacon township is currently growing at a rate of 0.09% annually but its population has decreased by -0.21% since the most recent census, which recorded a population of 2,346 in 2020.
The average household income in Lacon township is $91,938 with a poverty rate of 12.23%. The median age in Lacon township is 43.6 years: 43.5 years for males, and 43.6 years for females.