Ava
- County:
- Jackson County
- County Seat:
- No
- Area (mi²):
- 1.057
- State:
- Illinois
Ava is a city located in Jackson County, Illinois. Ava has a 2026 population of 547. Ava is currently growing at a rate of 0.37% annually but its population has decreased by -0.36% since the most recent census, which recorded a population of 549 in 2020.