Senachwine township
- County:
- Putnam County
- County Seat:
- No
- Area (mi²):
- 31.831
- State:
- Illinois
Senachwine township is located in Putnam County, Illinois. Senachwine township has a 2026 population of 629. Senachwine township is currently growing at a rate of 1.29% annually and its population has increased by 2.78% since the most recent census, which recorded a population of 612 in 2020.
The median household income in Senachwine township is $73,333 with a poverty rate of 10.9%. The median age in Senachwine township is 62.9 years: 62.9 years for males, and 62 years for females. For every 100 females there are 105.6 males.