Warren County Flag

Warren County

State:
Ohio
County Seat:
Lebanon

Warren County's estimated 2025 population is 258,539 with a growth rate of 0.97% in the past year according to the most recent United States census data. Warren County is the 10th largest county in Ohio. The 2010 population was 213,445 and has seen a growth of 21.13% since that time.

258,539
Total Population
645
Population Density (mi²)
10
Population Rank (State)
2.5K 0.97%
Annual Population Growth

Warren 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)