The median annual wage for Geological Technicians, Except Hydrologic Technicians in Illinois is $46,880 (May 2024 BLS OES). The mean (average) is $51,080.
Pay spans roughly $37,460 at the 10th percentile to $77,600 at the 90th, so experience and specialisation move this figure a lot. At the median that is about $22.54 per hour. An estimated 130 people work as geological technicians, except hydrologic technicians in Illinois.
| Median (annual) | $46,880 |
| Mean (annual) | $51,080 |
| Median (hourly) | $22.54 |
| 10th percentile | $37,460 |
| 90th percentile | $77,600 |
| Employment | 130 |
Updated 2026-07-23.
Source: BLS OES May 2024 — bls.gov/oes. Checked 2026-07-23.