Coffeen
- County:
- Montgomery County
- County Seat:
- No
- Area (mi²):
- 1.162
- State:
- Illinois
Coffeen is a city located in Montgomery County, Illinois. Coffeen has a 2026 population of 628. Coffeen is currently declining at a rate of -0.63% annually and its population has decreased by -2.18% since the most recent census, which recorded a population of 642 in 2020.
The median household income in Coffeen is $72,500 with a poverty rate of 21.03%. The median age in Coffeen is 38.3 years: 31.3 years for males, and 40.7 years for females. For every 100 females there are 93.5 males.