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Federal Contracting by State · Midwest

Federal Contracting in Illinois

Illinois is Where the military moves — U.S. Transportation Command at Scott AFB and Navy boot camp at Great Lakes. Illinois runs the military’s global logistics through U.S. Transportation Command at Scott AFB and trains every new sailor at Great Lakes. Rock Island Arsenal manufactures equipment and components, while Argonne and Fermilab anchor DOE science. Logistics, manufacturing, and R&D define the market.

📊 Based on 127 real federal opportunities with a place of performance in Illinois

Region

Midwest

Tracked opportunities

127

Typical award value

Varies by award

Top federal buyer

Department of Defense

Major military installations & federal facilities in Illinois

Scott AFB (U.S. Transportation Command & Air Mobility Command)Naval Station Great Lakes (Recruit Training Command)Rock Island Arsenal (Army manufacturing)Argonne & Fermi National Laboratories (DOE)

These installations and facilities anchor federal demand in Illinois — they generate base-operations, services, construction, and product requirements that flow to local and national contractors alike.

Federal agencies & HQs with a major presence

  • U.S. Transportation Command (Scott AFB)
  • Rock Island Arsenal Joint Manufacturing & Technology Center
  • DOE national laboratories

What the federal government buys in Illinois

Dominant buying sectors

Transportation & logistics commandManufacturing & arsenal servicesMilitary trainingScience & energy R&D (DOE labs)IT and analytics

Most-bought NAICS codes on recent IL solicitations

Most active federal buyers in Illinois

Department of DefenseDepartment of EnergyDepartment of Veterans AffairsDepartment of JusticeGeneral Services AdministrationDepartment of Agriculture

These are the agencies posting the most solicitations performed in Illinois. Set up alerts on WinAContract for their opportunities, then draft your response in GovCon.

Set-asides used in IL

Total Small Business Set-Aside (FAR 19.5)No Set aside usedService-Disabled Veteran-Owned Small Business Set Aside

See the set-aside program guides for eligibility.

Where the work is performed

Rock IslandBataviaLemontScott Air Force BaseMarionPeoria

Top performance locations on recent IL solicitations.

How to win federal contracts in Illinois

  1. Register in SAM.gov. It's free and mandatory to receive federal awards. Get your UEI and complete the registration before you bid.
  2. Pin down your NAICS codes. Register under every code that fits what you sell — in Illinois the active codes include 236220, 811310, 238220.
  3. Claim your set-aside certifications. 8(a), WOSB/EDWOSB, SDVOSB/VOSB, and HUBZone open contracts that exclude large primes. See which you qualify for →
  4. Use your APEX Accelerator. Every state has one (formerly PTACs) offering free counseling on registration, bid-matching and proposals — find Illinois's at apexaccelerators.us.
  5. Track the right opportunities. Monitor solicitations performed in IL on SAM.gov and WinAContract, focused on the agencies and installations above.
  6. Write compliant, winning proposals. Import the solicitation into GovCon, draft Sections L & M, and run a compliance check before you submit.

Federal contracting in Illinois — common questions

How do I start winning federal contracts in Illinois?

Register your business in SAM.gov (free), identify the NAICS codes that match what you sell, and claim any small-business or socioeconomic set-aside certifications you qualify for. Then track solicitations with a place of performance in IL — especially from Department of Defense and Department of Energy — and respond with compliant, well-written proposals. Illinois's APEX Accelerator offers free counseling to local firms.

Which federal agencies buy the most in Illinois?

Based on recent solicitations with a place of performance in Illinois, the most active buyers include Department of Defense, Department of Energy, Department of Veterans Affairs, Department of Justice, General Services Administration. Major installations and facilities in the state include Scott AFB (U.S. Transportation Command & Air Mobility Command), Naval Station Great Lakes (Recruit Training Command), Rock Island Arsenal (Army manufacturing).

What kinds of contracts are available in Illinois?

The dominant federal-buying sectors in Illinois are Transportation & logistics command, Manufacturing & arsenal services, Military training, Science & energy R&D (DOE labs). The most common NAICS codes on recent IL solicitations include 236220 (236220 · Commercial and Institutional Building Construction), 811310 (811310 · Repair and Maintenance), 238220 (238220 · Plumbing, Heating, and Air-Conditioning Contractors), 311999 (311999 · Food Manufacturing).

Are there set-aside opportunities for small businesses in Illinois?

Yes. Recent IL solicitations frequently use Total Small Business Set-Aside (FAR 19.5), No Set aside used, Service-Disabled Veteran-Owned Small Business Set Aside. If your firm holds a matching certification, you compete in a far smaller field. See our set-aside program guides for eligibility and certification steps.

Chasing a federal opportunity in Illinois?

GovCon is the AI proposal-writing tool built for federal offerors — import the solicitation, draft Sections L & M, and check compliance. Free plan, no card required.

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More in the Midwest

Browse all states, explore NAICS contracting guides, or read the set-aside program guides.