Jacksonville
- County:
- Jackson County
- County Seat:
- No
- Area (mi²):
- 1.892
- State:
- Oregon
Jacksonville is a city located in Jackson County, Oregon. Jacksonville has a 2026 population of 2,945. Jacksonville is currently declining at a rate of -0.47% annually and its population has decreased by -2.64% since the most recent census, which recorded a population of 3,025 in 2020.