Madison County Flag

Madison County

State:
Ohio
County Seat:
London

Madison County's 2026 population is estimated at 47,257, reflecting a 1.86% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Madison County is the 51st largest county in Ohio. The 2010 population was 43,434 and has grown 8.8% since 2010.

47,257
Total Population
101
Population Density (mi²)
51
Population Rank (State)
863 1.86%
Annual Population Growth

Madison County Population

Demographics

Economics and Income Statistics