Champaign County Flag

Champaign County

State:
Ohio
County Seat:
Urbana

Champaign County's estimated 2025 population is 38,957 with a growth rate of 0.13% 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 -2.8% since that time.

38,957
Total Population
91
Population Density (mi²)
63
Population Rank (State)
50 0.13%
Annual Population Growth

Champaign County Population

Demographics

Economics and Income Statistics

Sources

  1. City and Town Population Totals: 2020-2024
  2. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  3. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  4. American Community Survey (2009 - 2013)
  5. Census QuickFacts
  6. Historical Populations of States and Counties (1790 - 1990)