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Hydrologists Salary in Illinois
Last updated: 2025 BLS data · Page refreshed:
How much do Hydrologists make in Illinois?
Last updated: 2025 data from the Bureau of Labor Statistics
$83,720
Median Annual Salary
▲
+4.9% vs 2024
$92,640
Mean Salary
$83,720
Median Salary
$40.25
Hourly Rate
100 people work as Hydrologists in Illinois
Hydrologists salary by percentile in Illinois
BLS-reported salary distribution — from entry-level (10th percentile) to top earners (90th percentile).
Hydrologists in Illinois earn a median salary of $83,720 per year ($6,976/month).
This is 14.4% below the national average of $97,815.
Illinois ranks #26 out of 34 states for Hydrologists pay.
Approximately 100 people work in this occupation across Illinois.
Salaries increased by 4.9% compared to 2024.
About This Job: Hydrologists
Research the distribution, circulation, and physical properties of underground and surface waters; and study the form and intensity of precipitation and its rate of infiltration into the soil, movement through the earth, and return to the ocean and atmosphere.
Top Skills
Critical Thinking
4.0
Reading Comprehension
3.88
Active Listening
3.88
Science
3.88
Speaking
3.75
Key Knowledge Areas
Mathematics
4.35
Physics
4.13
Engineering and Technology
4.0
English Language
3.91
Geography
3.87
Typical Education: Master's Degree
(52.2% of workers)
Salaries for Hydrologists in Illinois range from $59,070 at the 10th percentile (entry level) to $133,430 at the 90th percentile (experienced). The middle 50% earn between $67,590 and $110,110.
The median annual salary for Hydrologists in Illinois is $83,720 as of 2025. The average (mean) salary is $92,640.
What is the salary range for a Hydrologists in Illinois?
Salaries for Hydrologists in Illinois range from $59,070 at the 10th percentile to $133,430 at the 90th percentile. The middle 50% earn between $67,590 and $110,110.
What is the starting salary for a Hydrologists in Illinois?
Entry-level Hydrologists positions in Illinois typically start around $59,070 (10th percentile). With some experience, salaries rise to $67,590 (25th percentile).
How many people work as Hydrologists in Illinois?
According to 2025 BLS data, approximately 100 people are employed as Hydrologists in Illinois.
What is the hourly rate for a Hydrologists in Illinois?
Based on a standard 2,080-hour work year, the median hourly rate for a Hydrologists in Illinois is approximately $40.25 per hour.
Salary data is sourced from the U.S. Bureau of Labor Statistics (BLS) Occupational Employment and Wage Statistics (OEWS) survey, 2025 estimates. The OEWS survey covers approximately 1.1 million establishments nationwide.
Annual salaries are calculated based on a standard 2,080-hour work year. Actual compensation may vary based on experience, education, employer, and local market conditions. Figures do not include benefits, bonuses, or overtime pay.
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