
Watertown township
- County:
- Washington County
- County Seat:
- No
- Area (mi²):
- 36.265
- State:
- Ohio
Watertown township is located in Washington County, Ohio. Watertown township has a 2025 population of 1,468. Watertown township is currently declining at a rate of -0.54% annually and its population has decreased by -3.1% since the most recent census, which recorded a population of 1,515 in 2020.
The average household income in Watertown township is $78,764 with a poverty rate of 5.82%. The median age in Watertown township is 42.8 years: 41.8 years for males, and 44.8 years for females.