Allen County Flag

Allen County

State:
Ohio
County Seat:
Lima

Allen County's estimated 2025 population is 100,320 with a growth rate of -0.26% in the past year according to the most recent United States census data. Allen County is the 26thlargest county in Ohio. The 2010 population was 106,342 and has seen a growth of -5.66% since that time.

100,320
Total Population
249
Population Density (mi²)
26
Population Rank (State)
-259 -0.26%
Annual Population Growth

Allen 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)