The median annual wage for Chemical Plant and System Operators in Illinois is $66,580 (May 2024 BLS OES). The mean (average) is $66,780.
Pay spans roughly $58,540 at the 10th percentile to $75,730 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $32.01 per hour. An estimated 290 people work as chemical plant and system operators in Illinois.
| Median (annual) | $66,580 |
| Mean (annual) | $66,780 |
| Median (hourly) | $32.01 |
| 10th percentile | $58,540 |
| 90th percentile | $75,730 |
| Employment | 290 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.