State comparison · 2025
Epidemiologists salary: California vs Illinois
Epidemiologists in California earn a median of $110,760. In Illinois, $102,720. After cost-of-living, the gap is 2.6% — not 7.8%.
Nominal pay gap
+7.8%
California vs Illinois
COL-adjusted gap
-2.6%
After BEA Regional Price Parities
California
Epidemiologists
- Median
- $110,760
- p25
- $86,310
- p75
- $133,970
- p10
- $71,910
- p90
- $168,220
- COL index (BEA RPP)100 = US average
- 110.7
- Hiring velocity (180d)
- -58%
Illinois
Epidemiologists
- Median
- $102,720
- p25
- $77,580
- p75
- $106,230
- p10
- $65,570
- p90
- $138,800
- COL index (BEA RPP)100 = US average
- 100.0
- Hiring velocity (180d)
- -29%
BLS Occupational Employment and Wage Statistics, May 2025. Cost-of-living adjustment from BEA Regional Price Parities (overall index). Hiring velocity from DOL OFLC public disclosure data, recent 180 days vs prior. See methodology.