
Port William
- County:
- Clinton County
- County Seat:
- No
- Area (mi²):
- 0.109
- State:
- Ohio
Port William is a village located in Clinton County, Ohio. Port William has a 2025 population of 219. Port William is currently declining at a rate of -0.45% annually and its population has decreased by -1.79% since the most recent census, which recorded a population of 223 in 2020.
The average household income in Port William is $52,179 with a poverty rate of 33.61%. The median age in Port William is 31.5 years: 23.8 years for males, and 36.8 years for females.