
Gilson
- County:
- Knox County
- County Seat:
- No
- Area (mi²):
- 0.331
- State:
- Illinois
Gilson is a CDP located in Knox County, Illinois. Gilson has a 2025 population of 104. Gilson is currently declining at a rate of -5.45% annually and its population has decreased by -46.39% since the most recent census, which recorded a population of 194 in 2020.
The average household income in Gilson is $78,190 with a poverty rate of 0%. The median age in Gilson is 61.6 years: 44.9 years for males, and 62.1 years for females.