State Profile
CAGE Codes in Illinois
20,000 SAM.gov-registered entities · Largest hub: Chicago
Illinois Federal Contractor Profile
Illinois has approximately 20,000 companies registered in SAM.gov with active CAGE codes. The federal contracting community in Illinois is centered in Chicago, with a strong presence in Software Development (NAICS 541511). Contractors in Illinois work across a range of federal agencies including DoD, VA, HHS, and GSA. To compete for contracts in Illinois, businesses must obtain a CAGE code and maintain an active SAM.gov registration. FedAtlas.com tracks detailed contract awards for Illinois-based contractors.
Every business listed below is registered in the federal System for Award Management (SAM.gov) and holds a CAGE code — the 5-character identifier required to receive any US government contract or payment. CAGE codes for Illinois-based entities reflect the company's principal place of business, which is used to determine HUBZone eligibility, state-level small-business goals, and regional contracting preferences.
20,000
Registered Entities
Chicago
Largest Hub City
541511
Software Development
Major Contracting Agencies in Illinois
These agencies award the most contract dollars to Illinois-based vendors. All vendors must maintain active CAGE codes and SAM.gov registrations to receive awards.
Look Up a Illinois Contractor's CAGE Code
FAQs: Federal Contracting in Illinois
How many SAM.gov-registered businesses are in Illinois?
Approximately 20,000 entities in Illinois have active or recent SAM.gov registrations with CAGE codes, based on DLA registry data.
What industries do Illinois federal contractors primarily serve?
The top NAICS code for Illinois federal contractors is 541511 (Software Development), though contractors serve a wide range of agencies and industries.
Do I need to be based in Illinois to get a CAGE code from Illinois?
Your CAGE code reflects your registered business address. If your principal place of business is in Illinois, your CAGE code will list a Illinois address.
Contract Award Data
Illinois Awards on FedAtlas.com
See every federal contract won by Illinois-based companies.
Quick Decode
Get Your CAGE Code
Register your Illinois-based business on SAM.gov to get a CAGE code. Free, takes 7–10 days.
Registration Guide