Chatham Flag

Chatham

County:
Sangamon County
County Seat:
No
Area (mi²):
7.406
State:
Illinois

Chatham is a village located in Sangamon County, Illinois. Chatham has a 2026 population of 14,639. Chatham is currently growing at a rate of 0.43% annually and its population has increased by 1.55% since the most recent census, which recorded a population of 14,415 in 2020.

14.6K
Total Population
1,977
Density (mi²)
63 0.43%
Growth