Franklin County Flag

Franklin County

State:
Ohio
County Seat:
Columbus

Franklin County's estimated 2025 population is 1,334,729 with a growth rate of 0.33% in the past year according to the most recent United States census data. Franklin County is the 1st largest county in Ohio. The 2010 population was 1,166,218 and has seen a growth of 14.45% since that time.

1,334,729
Total Population
2,509
Population Density (mi²)
1
Population Rank (State)
4.3K 0.33%
Annual Population Growth

Franklin County Population

Demographics

Economics and Income Statistics