Clay township
- County:
- Gallia County
- County Seat:
- No
- Area (mi²):
- 21.9
- State:
- Ohio
Clay township is located in Gallia County, Ohio. Clay township has a 2026 population of 1,726. Clay township is currently declining at a rate of -0.35% annually and its population has decreased by -1.37% since the most recent census, which recorded a population of 1,750 in 2020.
The median household income in Clay township is $48,750 with a poverty rate of 12.53%. The median age in Clay township is 41.5 years: 39.6 years for males, and 41.7 years for females. For every 100 females there are 110.4 males.