Richland County Flag

Richland County

State:
Ohio
County Seat:
Mansfield

Richland County's 2026 population is estimated at 124,553, reflecting a -0.12% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Richland County is the 23rd largest county in Ohio. The 2010 population was 124,156 and has grown 0.32% since 2010.

124,553
Total Population
252
Population Density (mi²)
23
Population Rank (State)
-150 -0.12%
Annual Population Growth

Richland County Population

Demographics

Economics and Income Statistics