Washington township
- County:
- Highland County
- County Seat:
- No
- Area (mi²):
- 24.432
- State:
- Ohio
Washington township is located in Highland County, Ohio. Washington township has a 2026 population of 1,076. Washington township is currently growing at a rate of 0.37% annually and its population has increased by 0.56% since the most recent census, which recorded a population of 1,070 in 2020.
The median age in Washington township is 42.8 years: 42.6 years for males, and 55.3 years for females. For every 100 females there are 122.6 males.