Hydrologists Pay Range in Illinois
Pay distribution across experience levels
- 10th Percentile — Entry Level$59,070
- 25th Percentile — Junior$67,590
- 50th Percentile — Median$83,720
- 75th Percentile — Senior$110,110
- 90th Percentile — Top Earners$133,430
Half of Hydrologists in Illinois earn more than $83,720. The top 10% make $133,430 or more, while entry-level workers start around $59,070.
Hydrologists in Illinois: Key Facts
Source: BLS OEWS May 2025
- Illinois ranks 25th of 34 states for Hydrologists pay, at $92,640 per year (10.6% below the U.S. average of $103,600).
- 100 people work as Hydrologists in Illinois — 1.7% of all U.S. Hydrologists jobs.
- Location quotient 0.45: Hydrologists jobs are less concentrated in Illinois than in the U.S. overall.
- Pay range: the lowest-paid 10% earn under $59,070; the top 10% earn over $133,430.
- Hourly equivalent: $44.54 per hour (2,080 hours/year).
- The highest-paying state is Maryland at $145,970.
- Among science jobs in Illinois, Atmospheric and Space Scientists pays the most ($147,860).
Hydrologists Job Market in Illinois
Key factors affecting compensation
Illinois's key industries are Finance, Manufacturing, Agriculture, and its job market is rated strong. Hydrologists here earn $92,640 on average, placing the state 25th nationally.
With a cost-of-living index of 1.05 (U.S. = 1.00), a Illinois salary of $92,640 is roughly equivalent to $88,229 at the national average cost of living.
Compared with nearby states in the pay ranking, New York ($95,000), Minnesota ($94,300), Pennsylvania ($93,500) are the closest alternatives for Hydrologists weighing a move.
U.S. Bureau of Labor Statistics · Occupational Employment and Wage Statistics (OES) · May 2025
Other Science Jobs in Illinois
Related career salary benchmarks
- Atmospheric and Space Scientists $147,860/yr Illinois +59.6% vs this role
- Sociologists $143,940/yr Illinois +55.4% vs this role
- Physicists $139,780/yr Illinois +50.9% vs this role
- Materials Scientists $129,980/yr Illinois +40.3% vs this role
- Geoscientists $109,290/yr Illinois +18.0% vs this role
- Food Scientists and Technologists $103,030/yr Illinois +11.2% vs this role
- Biochemists and Biophysicists $102,640/yr Illinois +10.8% vs this role
- Chemists $98,420/yr Illinois +6.2% vs this role
Frequently Asked Questions
Common questions about this salary
What is the average Hydrologists salary in Illinois?
The average Hydrologists salary in Illinois is $92,640 per year (median $83,720), which is 10.6% below the national average of $103,600.
How does Illinois rank for Hydrologists pay?
Illinois ranks 25th out of 34 states. The highest-paying state is Maryland ($145,970/yr).
How much do entry-level Hydrologists make in Illinois?
The lowest-paid 10% of Hydrologists in Illinois earn about $59,070 per year and the 25th percentile is $67,590.
How much do Hydrologists make per hour in Illinois?
About $44.54 per hour, based on the $92,640 annual average and 2,080 working hours per year.
How many Hydrologists work in Illinois?
BLS counts 100 Hydrologists jobs in Illinois (OEWS May 2025).
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