How much does a Cost Engineer III make in Illinois?
As of May 01, 2026, the average salary for a Cost Engineer III in Illinois is $110,715 per year, which breaks down to an hourly rate of $53.
However, a Cost Engineer III's salary can vary significantly. Here’s a look at the typical salary range:
- Top Earners (90th percentile): $129,291
- Majority Range (25th-75th percentile): $98,114 to $120,438
- Entry-Level (10th percentile): $86,641