Champaign County Flag

Champaign County

State:
Ohio
County Seat:
Urbana

Champaign County's estimated 2025 population is 39,049 with a growth rate of 0.26% in the past year according to the most recent United States census data. Champaign County is the 63rd largest county in Ohio. The 2010 population was 40,078 and has seen a growth of -2.57% since that time.

39,049
Total Population
91
Population Density (mi²)
63
Population Rank (State)
102 0.26%
Annual Population Growth

Champaign County Population

Demographics

Economics and Income Statistics