
Gilman
- County:
- Iroquois County
- County Seat:
- No
- Area (mi²):
- 2.433
- State:
- Illinois
Gilman is a city located in Iroquois County, Illinois. Gilman has a 2025 population of 1,636. Gilman is currently declining at a rate of -1.27% annually and its population has decreased by -5.98% since the most recent census, which recorded a population of 1,740 in 2020.
The average household income in Gilman is $79,890 with a poverty rate of 6.98%. The median age in Gilman is 43.8 years: 44.1 years for males, and 42.8 years for females.