Professional, Scientific, and Technical Services Federal Contractors in Illinois
34 federal contractors in the Professional, Scientific, and Technical Services sector headquartered in Illinois are published on this site, with $6.72B in combined obligations on file. The largest are Ddb Chicago INC., National Opinion Research Center, and Paragon Micro INC.
| Contractor | State | Obligations on file | Top agency |
|---|---|---|---|
| Ddb Chicago INC. | IL | $2.41B | Department of Defense |
| National Opinion Research Center | IL | $1.10B | Department of Health and Human Services |
| Paragon Micro INC | IL | $631.0M | Department of Defense |
| Sirius Federal LLC | IL | $284.7M | Department of Defense |
| Vista Defense Technologies, LLC | IL | $203.9M | Department of Defense |
| Uncomn LLC | IL | $203.6M | Department of Defense |
| Veteran Technology Partners LLC | IL | $190.1M | Department of Veterans Affairs |
| Exp Federal INC. | IL | $188.6M | Department of Defense |
| Aeg Group INC | IL | $137.6M | Department of Defense |
| The University of Chicago | IL | $107.7M | Department of Health and Human Services |
| Atp Gov, LLC | IL | $106.0M | Department of Defense |
| Cardinal Government Services, INC. | IL | $103.9M | Department of Commerce |
| Sphera Solutions, INC. | IL | $97.2M | Department of Defense |
| College of American Pathologists | IL | $95.1M | Department of Veterans Affairs |
| University of Illinois | IL | $74.5M | Department of Defense |
| Accuity Asset Verification Services INC | IL | $70.5M | Social Security Administration |
| Krueck & Sexton Architects, LTD | IL | $62.9M | General Services Administration |
| Paragon Technology Group INC. | IL | $62.4M | Department of Defense |
| C5t CORPORATION | IL | $58.6M | Department of Defense |
| Mccrone Associates INC | IL | $58.6M | Department of Defense |
| Controlled F.o.r.c.e INC. | IL | $57.6M | Department of Defense |
| Northwestern University | IL | $54.3M | Department of Health and Human Services |
| Datix (usa) INC. | IL | $54.1M | Department of Defense |
| Huron Consulting Services LLC | IL | $48.4M | Department of Veterans Affairs |
| Geo Bancroft Engineering LLC | IL | $47.4M | Department of Veterans Affairs |
| Ardl INC | IL | $38.3M | Department of Defense |
| Questek Innovations LLC | IL | $32.5M | Department of Defense |
| Leydig, Voit & Mayer, LTD. | IL | $30.3M | Department of Health and Human Services |
| University of Illinois | IL | $26.6M | Department of Health and Human Services |
| Collins Engineers, INCORPORATED | IL | $24.8M | Department of Defense |
| Hanson Professional Services, INC | IL | $21.7M | Department of Defense |
| Bailey Edward Design, INC | IL | $20.0M | Department of Agriculture |
| Mayer Brown LLP | IL | $11.2M | U.S. International Development Finance Corporation |
| The Glocoms Group INC | IL | $9.5M | Department of Defense |
Obligations shown are net federal contract obligations from USAspending.gov, fiscal year(s) currently in this export. See the methodology page for inclusion rules and the publication threshold.