Effingham County Flag

Effingham County

State:
Illinois
County Seat:
Effingham

Effingham County's estimated 2026 population is 34,497 with a growth rate of -0.06% in the past year according to the most recent United States census data. Effingham County is the 41st largest county in Illinois. The 2010 population was 34,222 and has seen a growth of 0.8% since that time.

34,497
Total Population
72
Population Density (mi²)
41
Population Rank (State)
-22 -0.06%
Annual Population Growth

Effingham County Population

Demographics

Economics and Income Statistics