Illinois · NAICS 325 · Annual, 2025
Chemical Manufacturing in Illinois
Employment, establishments and average pay for NAICS 325 in Illinois, 2004–2025, from DTG's QCEW-based estimates.
In 2025, Chemical Manufacturing (NAICS 325) employed about 48,700 people in Illinois across roughly 1,344 establishments, with average annual pay of $157,240.
Employment in Chemical Manufacturing in Illinois declined 6.4% from 2004 to 2025. The industry is 1.4× as concentrated in Illinois as in the nation as a whole (location quotient 1.40). Average pay in the industry is 96.5% above the all-industries average in Illinois. 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.
- 48,700Employment, 2025
- 1,344Establishments
- $157,240Avg. annual pay
- 0.8%Share of Illinois jobs
- 1.40Location quotient
Employment, 2004 to 2025
Annual average · all ownerships
Annual employment, 2004–2025: 2004 52,100; 2005 51,000; 2006 49,100; 2007 48,600; 2008 47,900; 2009 45,700; 2010 45,600; 2011 45,400; 2012 44,900; 2013 44,900; 2014 45,300; 2015 46,300; 2016 46,200; 2017 45,800; 2018 46,200; 2019 46,900; 2020 46,800; 2021 47,400; 2022 47,700; 2023 47,400; 2024 47,900; 2025 48,700.
Last ten years
Annual · 10 years
| Year | Employment | Estab. | Avg. annual pay | Change | Source |
|---|---|---|---|---|---|
| 2025 | 48,745 | 1,344 | $157,243 | 1.8% | pub. |
| 2024 | 47,894 | 1,307 | $152,135 | 1.1% | pub. |
| 2023 | 47,364 | 1,280 | $143,925 | 0.6% | pub. |
| 2022 | 47,668 | 1,261 | $141,283 | 0.5% | pub. |
| 2021 | 47,414 | 1,198 | $133,385 | 1.4% | pub. |
| 2020 | 46,783 | 1,141 | $126,427 | 0.2% | pub. |
| 2019 | 46,886 | 1,101 | $120,591 | 1.6% | pub. |
| 2018 | 46,156 | 1,029 | $121,115 | 0.8% | pub. |
| 2017 | 45,773 | 1,045 | $118,065 | 1.0% | pub. |
| 2016 | 46,236 | 1,103 | $114,012 | 0.2% | 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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Chemical Manufacturing in Illinois, quarterly, at full depth
This page shows annual figures for chemical manufacturing 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.