Delaware County Flag

Delaware County

State:
Ohio
County Seat:
Delaware

Delaware County's estimated 2025 population is 241,856 with a growth rate of 2.16% in the past year according to the most recent United States census data. Delaware County is the 11th largest county in Ohio. The 2010 population was 175,114 and has seen a growth of 38.11% since that time.

241,856
Total Population
546
Population Density (mi²)
11
Population Rank (State)
5.1K 2.16%
Annual Population Growth

Delaware County Population

Demographics

Economics and Income Statistics