Federal contracting in Illinois
$12.4B in federal prime contracts went to work performed in Illinois in FY2025 — 16th of 56 states and territories, 1.7% of the national total.
Federal figures: USAspending snapshot 2026-09-08, fiscal years 2020–2025 complete plus FY2026 through 2026-05. Obligations in US dollars.
What the money does here
Federal buyers obligated $12.4B on prime contracts performed in Illinois in fiscal 2025, which ranks it 16th of 56 states and territories and is 1.7% of everything the federal government contracted for that year. That is $970 per resident.
Since fiscal 2020 the total has moved +6%, from $11.7B. The largest single buyer is Department of Defense, at $7.2B — 58% of the state's federal total, out of 46 federal agencies that obligated anything here.
Of the sectors broken out here, manufacturing is the largest in Illinois: $4.4B, or 35.7% of the state's federal spending, having moved +1% since fiscal 2020. The single busiest place of performance is Cook County ($3.9B).
Seven years of federal contracting
Obligations by fiscal year, attributed to the state where the work is performed. Switch between every sector and each break-out on its own, and between full fiscal years and a matched window that makes the current year comparable.
FY2026 is hatched because it is 8 months, not twelve (2025-10 to 2026-05), and its defence figures stop where the Pentagon's 90-day reporting hold begins. It is not comparable to the columns beside it. Across the complete years, FY2020 to FY2025, all sectors obligations moved +6%.
Who buys here
Federal agencies by what they obligated on work performed in Illinois in fiscal 2025.
| Agency | Share of the state's federal total | Share | Obligated |
|---|---|---|---|
| Department of Defense | 57.6% | $7.2B | |
| Department of Energy | 16.6% | $2.1B | |
| Department of Veterans Affairs | 13.5% | $1.7B | |
| General Services Administration | 4.1% | $506M | |
| Department of Health and Human Services | 2.3% | $283M | |
| Department of Agriculture | 2.0% | $247M | |
| Department of Justice | 0.8% | $102M | |
| Department of Homeland Security | 0.7% | $85M | |
| Department of the Treasury | 0.4% | $52M | |
| Environmental Protection Agency | 0.4% | $50M | |
| Department of Transportation | 0.4% | $50M | |
| Department of the Interior | 0.2% | $26M | |
| All other agencies | 1.0% | $125M |
What they buy
The industries that federal money in Illinois actually lands in, by NAICS code.
| Industry | Share of the state's federal total | Share | Obligated |
|---|---|---|---|
| Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) NAICS 541715 | 14.8% | $1.8B | |
| All Other Miscellaneous Manufacturing NAICS 339999 | 8.9% | $1.1B | |
| Service Establishment Equipment and Supplies Merchant Wholesalers NAICS 423850 | 7.3% | $903M | |
| Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers NAICS 423450 | 6.1% | $762M | |
| Engineering Services NAICS 541330 | 4.7% | $584M | |
| Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing NAICS 334511 | 3.8% | $468M | |
| Advertising Agencies NAICS 541810 | 3.1% | $391M | |
| Home Centers NAICS 444110 | 2.9% | $356M |
Where in the state
Places of performance within Illinois, which is a different question from where the buying office sits.
| County | Share of the state's federal total | Share | Obligated |
|---|---|---|---|
| Cook County | 31.7% | $3.9B | |
| Dupage County | 28.2% | $3.5B | |
| Lake County | 11.8% | $1.5B | |
| Winnebago County | 7.3% | $905M | |
| Kane County | 6.8% | $845M | |
| St. Clair County | 5.7% | $708M | |
| Williamson County | 2.4% | $293M | |
| Rock Island County | 1.7% | $207M |
Who wins here
The largest prime contractors on work performed in Illinois. Companies registered under several entity IDs are summed into one row — the federal data reports each registration separately, which understates large parents three to five times if taken at face value.
| Prime contractor | Share of the state's federal total | Share | Obligated |
|---|---|---|---|
| FERMI FORWARD DISCOVERY GROUP, LLC | 14.0% | $1.7B | |
| W S DARLEY & CO | 11.8% | $1.5B | |
| UCHICAGO ARGONNE, LLC | 10.1% | $1.3B | |
| NORTHROP GRUMMAN SYSTEMS CORPORATION 2 registered entities combined | 8.6% | $1.1B | |
| SUPPLYCORE LLC | 6.5% | $808M | |
| MEDLINE INDUSTRIES, LP | 4.2% | $516M | |
| CARDINAL HEALTH 200, LLC | 3.8% | $473M | |
| DDB CHICAGO INC. | 3.1% | $391M |
Prime contracts only. A firm working as a subcontractor to one of these names does not appear, however much of the work it does.
Small business
Of the $7.1B obligated in Illinois over the matched window, $509M — 7.2% — went out under a small-business set-aside, against 6.7% nationally. In fiscal 2020 the state's share was 5.1%.
Set-asides are the part of the federal market a small firm can compete in on something other than scale, so the share matters more than the dollars. Open set-aside work in Illinois is listed in the portal.
Open in Illinois right now
Offra is tracking 63 open public solicitations in Illinois — federal, state and local. Public record last confirmed Oct 1, 2026, 9:49 PM UTC.
Busiest industries
- Waste collection7
- Commercial & institutional building construction4
- Building equipment contractors3
- Navigational, measuring & control instruments3
- Investigation & security services2
- Facilities support services1
Where the notices come from
- SAM.gov37
- OpenGov (multi-state)26
How to read this page
- The two halves measure different things.
- Everything above the live section is federal prime-contract obligations from USAspending, attributed to the state where the work is performed. The live counts are our own open-notice corpus, where a federal notice is filed against the contracting office's address, because that is what the source publishes — only about a third of SAM.gov notices carry a usable place of performance. The two are not interchangeable and are deliberately not added together.
- Obligations, not award value.
- What was actually put on contract in the window, including modifications to older awards. A negative figure is not an error: it means money came back off existing contracts faster than new money went out.
- Prime contracts only — so infrastructure money is largely invisible.
- Award types A–D. Grants, loans and direct payments are excluded because they are not contracts. Most federal infrastructure money reaches contractors as grants or formula funds to state agencies, which then let their own contracts; none of that is a federal prime contract and none of it appears here. That is a fact about the measure, not about the spending.
- Fiscal 2026 is 8 months, and its defence figures stop early.
- The Department of Defense and the U.S. Army Corps of Engineers withhold contract actions from federal reporting for 90 days. Nothing in the data marks it — a recent month simply shows almost no defence activity, which reads exactly like a collapse and is not one. This snapshot treats the record as complete only through 2026-05, a boundary found by reading the monthly defence series and locating where it falls off a shelf rather than by counting days. Use the like-for-like window on the chart to compare the current year to its predecessors.
- Contractors are rolled up; subcontractors are absent.
- Federal data reports one row per registered entity, not per company, so a large parent appears several times. Those rows are summed here. Subcontract work is not reported at this level at all.
- The figures move after publication.
- Recent months revise upward for weeks as modifications post, so the most recent year on this page is provisional by construction. Snapshot taken 2026-09-08.
The wider federal picture — which agencies moved, which contractors arrived, and what changed nationally — is in the federal contracting study. Every state's open-tender count is on the coverage map.
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