Data Scientists Salary in Illinois

Data scientists in Illinois earn the most in Bloomington (average $127,590 a year) and the least in Springfield ($97,280), across the 6 Illinois metro areas we cover. Statewide, BLS puts the data scientists average at $117,870 and the median at $106,560 for 10,520 workers. The U.S. average for this job is $126,800.

Data Scientists average salary by city in Illinois

Bloomington$127,590
Chicago$118,860
Peoria$117,620
Champaign$99,830
Rockford$98,230
Springfield$97,280

Pay, take-home pay and cost of living

City	Average	Median	25th pct.	Take-home*	Cost of living
Bloomington	$127,590	$120,760	$94,550	$92,299	94
Chicago	$118,860	$107,640	$84,600	$86,706	104
Peoria	$117,620	$120,000	$92,850	$85,895	91
Champaign	$99,830	$91,760	$74,000	$74,260	93
Rockford	$98,230	$92,990	$69,090	$73,213	92
Springfield	$97,280	$92,000	$69,080	$72,592	93

*Average salary after federal and state taxes for a single filer. Cost of living: BEA price parity, U.S. = 100.

Data Scientists salary in other states

Data Scientists salary by city and state

More about pay in Illinois

Sources and how to read this page

Wages: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS), May 2025 estimates for metropolitan areas. SOC code 15-2051.
U.S. and statewide figures: BLS OEWS national and state estimates, May 2025, every employer including rural areas.
Cost of living: Bureau of Economic Analysis regional price parities (RPP), 2024; 100 = U.S. average.

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