Henry County Flag

Henry County

State:
Illinois
County Seat:
Cambridge

Henry County's estimated 2026 population is 47,807 with a growth rate of -0.39% 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 -5.26% since that time.

47,807
Total Population
58
Population Density (mi²)
30
Population Rank (State)
-185 -0.39%
Annual Population Growth

Henry County Population

Demographics

Economics and Income Statistics