
Port Byron
- County:
- Rock Island County
- County Seat:
- No
- Area (mi²):
- 2.428
- State:
- Illinois
Port Byron is a village located in Rock Island County, Illinois. Port Byron has a 2025 population of 1,602. Port Byron is currently declining at a rate of -0.74% annually and its population has decreased by -3.73% since the most recent census, which recorded a population of 1,664 in 2020.
The average household income in Port Byron is $120,290 with a poverty rate of 8.62%. The median age in Port Byron is 42 years: 42.5 years for males, and 41.7 years for females.