Hydrologists · Illinois

Hydrologists Salary in Illinois

Hydrologists in Illinois earn a median annual wage of $83,720 —13.3% below the national median of $96,600. That ranks IL #26 of 34 covered states and territories for this occupation.

Median annual
$83,720
Median hourly
$40.25
Entry level (P10)
$59,070
10th percentile
Top 10% (P90)
$133,430
90th percentile
Employment
100
0.0 per 1,000 jobs
vs U.S. median
-13.3%
U.S. $96,600

Wage distribution

How earnings are spread across workers in this occupation, from the 10th to the 90th percentile.

10th percentile90th percentile
$59,070
$67,590
$83,720
$110,110
$59,070$83,720$133,430
Annual wage distribution. Highlighted segment contains the median of $83,720.

Employment is only 0.45× as concentrated as the national average — this occupation is relatively scarce in Illinois.

Highest-paying states for hydrologists

All 34 states ranked by median annual wage. Illinois is highlighted.

#StateMedian annual Median hourlyEmploymentLocation quotient
1Maryland$143,010$68.75900.83
2Virginia$132,080$63.50400.25
3New Jersey$126,680$60.90——
4California$122,110$58.715400.79
5Georgia$121,830$58.57300.18
6Massachusetts$119,350$57.38500.38
7Missouri$116,100$55.82500.43
8Alaska$108,660$52.24604.55
9Nevada$107,930$51.891702.94
10Washington$105,600$50.773502.62

Related occupations in Illinois

Occupations in the same job family, compared within Illinois.

Frequently asked questions

How much do hydrologists make in Illinois?

The median annual wage for hydrologists in Illinois is $83,720, or $40.25 per hour. That is 13.3% below the national median of $96,600.

What is the entry-level hydrologists salary in Illinois?

Workers at the 10th percentile earn $59,070 per year ($28.40/hour). The 25th percentile is $67,590.

How many people work as hydrologists in Illinois?

About 100 people work in this occupation in Illinois, or 0.0 per 1,000 jobs statewide.

Is Illinois a good state for hydrologists?

Illinois ranks #26 of 34 states by median wage for this occupation. Employment is only 0.45x as concentrated as the national average, so this occupation is relatively scarce in Illinois.

Which state pays hydrologists the most?

Maryland has the highest median wage at $143,010 per year, followed by Virginia ($132,080) and New Jersey ($126,680).

Source: U.S. Bureau of Labor Statistics, OEWS May 2025. Occupational Employment and Wage Statistics, cross-industry estimates. Retrieved 2026-10-26. Figures are rounded by BLS to the nearest dollar (annual) and cent (hourly). Percentile wages describe the distribution of workers, not the pay range for a single job posting. bls.gov/oes