Leech township
- County:
- Wayne County
- County Seat:
- No
- Area (mi²):
- 53.379
- State:
- Illinois
Leech township is located in Wayne County, Illinois. Leech township has a 2026 population of 444. Leech township is currently growing at a rate of 0.23% annually but its population has decreased by -1.55% since the most recent census, which recorded a population of 451 in 2020.
The median age in Leech township is 47.3 years: 40.7 years for males, and 47.5 years for females. For every 100 females there are 204.5 males.