Port Jefferson
- County:
- Shelby County
- County Seat:
- No
- Area (mi²):
- 0.152
- State:
- Ohio
Port Jefferson is a village located in Shelby County, Ohio. Port Jefferson has a 2026 population of 302. Port Jefferson is currently declining at a rate of 0% annually and its population has decreased by -1.95% since the most recent census, which recorded a population of 308 in 2020.
The median household income in Port Jefferson is $57,083 with a poverty rate of 13.38%. The median age in Port Jefferson is 51.1 years: 51.3 years for males, and 49 years for females. For every 100 females there are 98.7 males.