Hancock County Flag

Hancock County

State:
Illinois
County Seat:
Carthage

Hancock County's estimated 2026 population is 16,670 with a growth rate of -0.79% in the past year according to the most recent United States census data. Hancock County is the 62nd largest county in Illinois. The 2010 population was 19,091 and has seen a growth of -12.68% since that time.

16,670
Total Population
21
Population Density (mi²)
62
Population Rank (State)
-133 -0.79%
Annual Population Growth

Hancock County Population

Demographics

Economics and Income Statistics