
Franklin
- County:
- Warren County
- County Seat:
- No
- Area (mi²):
- 9.228
- State:
- Ohio
Franklin is a city located in Warren County, Ohio. Franklin has a 2025 population of 11,631. Franklin is currently declining at a rate of -0.09% annually and its population has decreased by -0.46% since the most recent census, which recorded a population of 11,685 in 2020.
The average household income in Franklin is $75,970 with a poverty rate of 21.06%. The median age in Franklin is 35.2 years: 30.1 years for males, and 41.3 years for females.