SalaryData

Environmental Engineer Salary in Illinois

Based on 940+ workers in Illinois

Data year: 2025 · Last updated: June 2026

Median Annual Salary (IL)

$107,990

$51.918/hr

vs National Average

$104,071

+3.8% vs national median

Salary Range (10th–90th)

$72K $153K

940 employed in Illinois

Environmental engineers in Illinois earn a median salary of $107,990 per year, which sits 4% above the national average. With approximately 940 environmental engineers employed throughout the state, Illinois offers competitive compensation in this field. Salaries in the state range from $71,990 to $153,150 annually, reflecting the diversity of roles and experience levels across the profession.

Several factors influence Environmental Engineer salary in Illinois, including years of experience, educational credentials, and industry specialization. Geographic location within the state, employer type, and company size also play significant roles in determining compensation. Environmental engineers working on large-scale industrial projects or in major metropolitan areas typically command higher salaries than those in smaller municipalities or early-career positions.

Salary Distribution — Environmental Engineer in Illinois

Environmental Engineer (IL) salary percentiles
PercentileAnnual Salary
10th percentile$71,990
25th percentile$87,090
Median (50th percentile)$107,990
75th percentile$123,960
90th percentile$153,150

Historical Salary Trend — Environmental Engineer in Illinois vs National

Historical Environmental Engineer (Illinois vs National) salary trend
YearMedian Salary (United States)
2022$108,500
2023$102,000
2024$107,550
2025$107,990
Historical salary trend for Environmental Engineer in Illinois
YearIllinois MedianNational Median
2022$108,500$92,026
2023$102,000$96,306
2024$107,550$100,067
2025$107,990$104,071

Environmental Engineer Salary by Experience Level in Illinois

Environmental Engineer Salary in Other States

Frequently Asked Questions

How much do environmental engineers make in Illinois?

Environmental engineers in Illinois earn a median salary of $107,990 per year, or $52 per hour. This is 3.8% higher than the national average, making Illinois a competitive state for this profession.

What is the salary range for environmental engineers in Illinois?

Environmental engineer salaries in Illinois range from $71,990 at the lower end to $153,150 at the higher end. The difference between these extremes reflects varying experience levels, specializations, and employer types in the state.

How many environmental engineers work in Illinois?

There are approximately 940 environmental engineers currently employed in Illinois. This represents the total workforce for this occupation across the state.

Is an environmental engineer salary in Illinois above the national average?

Yes, environmental engineers in Illinois earn 3.8% more than the national average. With a median salary of $107,990 annually, the state offers above-average compensation compared to other states.

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