Illinois City
- County:
- Rock Island County
- County Seat:
- No
- Area (mi²):
- 0.457
- State:
- Illinois
Illinois City is a CDP located in Rock Island County, Illinois Illinois. Unfortunately, the data for this location is currently limited or unavailable.
The median age in Illinois City is 25.5 years: 62.1 years for males, and 25.4 years for females. For every 100 females there are 78.0 males.