Alexander County Flag

Alexander County

State:
Illinois
County Seat:
Cairo

Alexander County's estimated 2025 population is 4,403 with a growth rate of -3.21% in the past year according to the most recent United States census data. Alexander County is the 98th largest county in Illinois. The 2010 population was 8,205 and has seen a growth of -46.34% since that time.

4,403
Total Population
19
Population Density (mi²)
98
Population Rank (State)
-146 -3.21%
Annual Population Growth

Alexander County Population

Demographics

Economics and Income Statistics