Marianna
- County:
- Jackson County
- County Seat:
- Yes
- Area (mi²):
- 19.126
- State:
- Florida
Marianna is a city located in Jackson County, Florida. Marianna has a 2026 population of 7,975. It is also the county seat of Jackson County. Marianna is currently growing at a rate of 7.95% annually and its population has increased by 26.87% since the most recent census, which recorded a population of 6,286 in 2020.