Hydrologists Salary in Illinois
Hydrologists in Illinois earn a median of $83,720 a year, −13% compared with the U.S. median.
Updated October 2026 · Data: BLS OEWS May 2025 · How we match careers
- Median pay
- $83,720
- vs. U.S. median
- −13% ($96,600)
- Rank among states
- 26 of 34
- Jobs in the state
- 100
Pay range in Illinois
The lowest-paid 10% earn under $59,070; the top 10% earn over $133,430. Nationally the range is $64,020 to $153,130.
States ranked near Illinois
Similar jobs in Illinois
- Geoscientists, Except Hydrologists and Geographers$96,950 median in Illinois
- Atmospheric and Space Scientists$112,280 median in Illinois
- Soil and Plant Scientists$79,490 median in Illinois
- Water Resource Specialists$159,670 median in Illinois (broader BLS group)
- Materials Scientists$125,850 median in Illinois
- Industrial Ecologists$81,590 median in Illinois (broader BLS group)
Hydrologists pay in Illinois
How much do hydrologists make in Illinois?
The median is $83,720 a year. The lowest-paid 10% earn under $59,070 and the top 10% earn over $133,430. BLS OEWS May 2025.
Is Illinois a good state for hydrologists?
On pay alone it ranks 26 of 34 (−13% vs. the national median of $96,600). Living costs are not included.