Henry County Flag

Henry County

State:
Illinois
County Seat:
Cambridge

Henry County's estimated 2025 population is 47,992 with a growth rate of -0.38% in the past year according to the most recent United States census data. Henry County is the 30th largest county in Illinois. The 2010 population was 50,459 and has seen a growth of -4.89% since that time.

47,992
Total Population
58
Population Density (mi²)
30
Population Rank (State)
-185 -0.38%
Annual Population Growth

Henry 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)