As of April 01, 2025, the average annual salary for a Chemical Engineer I in Illinois is $85,238. Salary.com reports that pay typically ranges from $78,603 to $91,431, with most professionals earning between $72,563 and $97,070.
| Annual Salary |
Monthly Pay |
Weekly Pay |
Hourly Wage |
|
| 75th Percentile | $91,431 | $7,619 | $1,758 | $44 |
| Average | $85,238 | $7,103 | $1,639 | $41 |
| 25th Percentile | $78,603 | $6,550 | $1,512 | $38 |
An entry-level Chemical Engineer I with under 1 year experience makes about $84,743. With less than 2 years of experience, a mid-level Chemical Engineer I makes around $85,423. After 2-4 years, the Chemical Engineer I pay rises to about $86,809. Those senior Chemical Engineer I with 5-8 years of experience earn roughly $87,087, and those Chemical Engineer I having 8 years or more experience are expected to earn about $87,272 on average.
| Levels | Salary |
|---|---|
| Entry Level Chemical Engineer I | $84,743 |
| Intermediate Level Chemical Engineer I | $85,423 |
| Senior Level Chemical Engineer I | $86,809 |
| Specialist Level Chemical Engineer I | $87,087 |
| Expert Level Chemical Engineer I | $87,272 |
| Entry Level | 1% |
| Mid Level | 2% |
| Senior Level | 4% |
| Top Level | 4% |
| Experienced | 4% |
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