Colerain township
- County:
- Belmont County
- County Seat:
- No
- Area (mi²):
- 35.366
- State:
- Ohio
Colerain township is located in Belmont County, Ohio. Colerain township has a 2026 population of 1,962. Colerain township is currently declining at a rate of -0.46% annually and its population has decreased by -1.41% since the most recent census, which recorded a population of 1,990 in 2020.
The median household income in Colerain township is $93,833 with a poverty rate of 11.71%. The median age in Colerain township is 43 years: 35.9 years for males, and 49.2 years for females. For every 100 females there are 119.1 males.