Madison County Flag

Madison County

State:
Ohio
County Seat:
London

Madison County's 2026 population is estimated at 48,182, reflecting a 2.55% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Madison County is the 50th largest county in Ohio. The 2010 population was 43,434 and has grown 10.93% since 2010.

48,182
Total Population
103
Population Density (mi²)
50
Population Rank (State)
1.2K 2.55%
Annual Population Growth

Madison County Population

Demographics

Economics and Income Statistics