SalaryData

Environmental Scientist Salary in Illinois

Based on 2K+ workers in Illinois

Data year: 2025 · Last updated: June 2026

Median Annual Salary (IL)

$81,590

$39.226/hr

vs National Average

$80,042

+1.9% vs national median

Salary Range (10th–90th)

$47K $153K

2K employed in Illinois

Environmental Scientist salary in Illinois averages $81,590 per year, which is 2% above the national average. The state currently employs approximately 1,550 environmental scientists across various sectors. Salaries in this field range from $46,540 at the entry level to $153,150 for experienced professionals, reflecting significant variation based on individual qualifications and career progression.

Several factors influence earning potential for environmental scientists in Illinois. Education level, certifications, and years of experience play crucial roles in salary determination. Industry sector—whether working for government agencies, consulting firms, or private corporations—also affects compensation. Geographic location within the state, employer size, and specialization in areas like water quality or remediation further impact what professionals can expect to earn.

Salary Distribution — Environmental Scientist in Illinois

Environmental Scientist (IL) salary percentiles
PercentileAnnual Salary
10th percentile$46,540
25th percentile$60,790
Median (50th percentile)$81,590
75th percentile$121,040
90th percentile$153,150

Historical Salary Trend — Environmental Scientist in Illinois vs National

Historical Environmental Scientist (Illinois vs National) salary trend
YearMedian Salary (United States)
2022$67,030
2023$76,200
2024$89,010
2025$81,590
Historical salary trend for Environmental Scientist in Illinois
YearIllinois MedianNational Median
2022$67,030$70,215
2023$76,200$74,160
2024$89,010$77,423
2025$81,590$80,042

Environmental Scientist Salary by Experience Level in Illinois

Environmental Scientist Salary in Other States

Frequently Asked Questions

How much do environmental scientists make in Illinois?

Environmental scientists in Illinois earn a median salary of $81,590 per year, or approximately $39 per hour. This is 1.9% higher than the national average for the profession.

What is the salary range for environmental scientists in Illinois?

Environmental scientist salaries in Illinois range from $46,540 at the lower end to $153,150 at the upper end, reflecting differences in experience, specialization, and employer type.

Is environmental science a well-paying career in Illinois?

Yes, environmental science offers competitive compensation in Illinois with a median salary of $81,590 annually, which exceeds the national average by 1.9% and provides solid earning potential up to $153,150 for experienced professionals.

How many environmental scientists work in Illinois?

There are currently 1,550 environmental scientists employed in Illinois, indicating a moderate-sized professional workforce in the state.

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