Sangamon County Flag

Sangamon County

State:
Illinois
County Seat:
Springfield

Sangamon County's estimated 2025 population is 192,171 with a growth rate of -0.34% in the past year according to the most recent United States census data. Sangamon County is the 11th largest county in Illinois. The 2010 population was 197,769 and has seen a growth of -2.83% since that time.

192,171
Total Population
221
Population Density (mi²)
11
Population Rank (State)
-660 -0.34%
Annual Population Growth

Sangamon County Population

Demographics

Economics and Income Statistics