Illinois · NAICS 561 · Annual, 2025
Administrative and Support Services in Illinois
Employment, establishments and average pay for NAICS 561 in Illinois, 2004–2025, from DTG's QCEW-based estimates.
In 2025, Administrative and Support Services (NAICS 561) employed about 378,200 people in Illinois across roughly 20,197 establishments, with average annual pay of $61,300.
Employment in Administrative and Support Services in Illinois was essentially flat from 2004 to 2025 (+1.4%). Quarterly values, full industry detail and projections to 2036 for Illinois are included with a free account. County-level detail is part of every paid plan, or one county free for seven days.
- 378,200Employment, 2025
- 20,197Establishments
- $61,300Avg. annual pay
- 6.2%Share of Illinois jobs
- 1.13Location quotient
Employment, 2004 to 2025
Annual average · all ownerships
Annual employment, 2004–2025: 2004 372,900; 2005 380,000; 2006 391,500; 2007 398,800; 2008 383,400; 2009 331,900; 2010 348,700; 2011 365,400; 2012 383,100; 2013 394,800; 2014 411,300; 2015 411,700; 2016 413,800; 2017 418,600; 2018 424,100; 2019 424,000; 2020 382,400; 2021 403,500; 2022 430,700; 2023 409,100; 2024 386,200; 2025 378,200.
Last ten years
Annual · 10 years
| Year | Employment | Estab. | Avg. annual pay | Change | Source |
|---|---|---|---|---|---|
| 2025 | 378,178 | 20,197 | $61,300 | 2.1% | pub. |
| 2024 | 386,231 | 20,694 | $59,166 | 5.6% | pub. |
| 2023 | 409,101 | 20,672 | $57,154 | 5.0% | pub. |
| 2022 | 430,737 | 20,403 | $55,121 | 6.8% | pub. |
| 2021 | 403,472 | 19,902 | $51,415 | 5.5% | pub. |
| 2020 | 382,362 | 19,307 | $46,488 | 9.8% | pub. |
| 2019 | 424,036 | 19,378 | $42,876 | 0.0% | pub. |
| 2018 | 424,121 | 19,070 | $40,746 | 1.3% | pub. |
| 2017 | 418,636 | 18,612 | $39,047 | 1.2% | pub. |
| 2016 | 413,784 | 20,699 | $37,051 | 0.5% | pub. |
The full history from 2004 and quarterly values are available with a free account.
Where these numbers come from
Reading these figures
The figures on this page come from one named vintage, stated below, and are annual values for all ownerships combined. Where QCEW withheld a value, the marked figure is an estimate that DTG produced under the constraints of the published record; suppression is a property of QCEW, not of DTG, and a withheld value is marked rather than silently omitted. Two things DTG itself holds back, and says so where it does: an estimate that cannot be given a reliability score is not shown, and average pay is not shown where fewer than three jobs are reported. The row is marked withheld, with the reason in a note beneath the table. The mark is on every row that carries a value: the headline, the yearly history, the subsectors and the other states. An estimated value that rounds below one is shown as less than one, not as zero. Quarterly figures, county figures and projected years are in the app.
How this figure was built
Employment is the average of the three monthly counts in each quarter, averaged across the year, and establishments are averaged across the year the same way. Average annual pay is the year’s total wages divided by that average employment. Each of these is DTG’s value: QCEW’s published figure where QCEW disclosed it, and DTG’s estimate, marked, where it did not. How withheld values are estimated, and what the reliability score beside a figure means, are described on the industry data and disclosure and provenance pages.
Notes
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Administrative and Support Services in Illinois, quarterly, at full depth
This page shows annual figures for administrative and support services in Illinois. A free account shows every detailed industry beneath it, quarterly, for every state, with projections to ten years. No card.
County figures, file export and the API are on paid plans.