Cynthian township
- County:
- Shelby County
- County Seat:
- No
- Area (mi²):
- 31.072
- State:
- Ohio
Cynthian township is located in Shelby County, Ohio. Cynthian township has a 2026 population of 1,992. Cynthian township is currently growing at a rate of 0.3% annually but its population has decreased by -0.35% since the most recent census, which recorded a population of 1,999 in 2020.
The median household income in Cynthian township is $64,975 with a poverty rate of 24.41%. The median age in Cynthian township is 35.5 years: 35.5 years for males, and 39.2 years for females. For every 100 females there are 119.8 males.