Lee County Flag

Lee County

State:
Illinois
County Seat:
Dixon

Lee County's estimated 2025 population is 33,086 with a growth rate of -0.85% in the past year according to the most recent United States census data. Lee County is the 42nd largest county in Illinois. The 2010 population was 35,978 and has seen a growth of -8.04% since that time.

33,086
Total Population
46
Population Density (mi²)
42
Population Rank (State)
-284 -0.85%
Annual Population Growth

Lee County Population

Demographics

Economics and Income Statistics