Washington township
- County:
- Guernsey County
- County Seat:
- No
- Area (mi²):
- 24.65
- State:
- Ohio
Washington township is located in Guernsey County, Ohio. Washington township has a 2026 population of 462. Washington township is currently growing at a rate of 0.22% annually but its population has decreased by -0.43% since the most recent census, which recorded a population of 464 in 2020.
The median age in Washington township is 41.1 years: 41.9 years for males, and 40.2 years for females. For every 100 females there are 166.3 males.