
Chapin
- County:
- Morgan County
- County Seat:
- No
- Area (mi²):
- 0.998
- State:
- Illinois
Chapin is a village located in Morgan County, Illinois. Chapin has a 2025 population of 453. Chapin is currently declining at a rate of -0.88% annually and its population has decreased by -4.63% since the most recent census, which recorded a population of 475 in 2020.
The average household income in Chapin is $95,747 with a poverty rate of 5.75%. The median age in Chapin is 32.4 years: 33.7 years for males, and 30 years for females.