Mad River township
- County:
- Champaign County
- County Seat:
- No
- Area (mi²):
- 42.748
- State:
- Ohio
Mad River township is located in Champaign County, Ohio. Mad River township has a 2026 population of 2,776. Mad River township is currently growing at a rate of 0.11% annually and its population has increased by 0.33% since the most recent census, which recorded a population of 2,767 in 2020.
The median household income in Mad River township is $86,330 with a poverty rate of 2.96%. The median age in Mad River township is 48.7 years: 47.3 years for males, and 49.4 years for females. For every 100 females there are 90.4 males.