Professional, Scientific, and Technical Services Federal Contractors in Illinois
13 federal contractors in the Professional, Scientific, and Technical Services sector headquartered in Illinois are published on this site, with $5.77B 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 | $2.40B | Department of Defense |
| National Opinion Research Center | IL | $1.05B | Department of Health and Human Services |
| Paragon Micro INC | IL | $568.5M | Department of Defense |
| Grant Thornton LLP | IL | $368.6M | Department of State |
| Sirius Federal LLC | IL | $283.7M | Department of Defense |
| Vista Defense Technologies, LLC | IL | $203.9M | Department of Defense |
| Exp Federal INC. | IL | $188.6M | Department of Defense |
| Veteran Technology Partners LLC | IL | $184.9M | Department of Veterans Affairs |
| Aeg Group INC | IL | $134.1M | Department of Defense |
| The University of Chicago | IL | $107.5M | Department of Health and Human Services |
| Atp Gov, LLC | IL | $102.3M | Department of Defense |
| College of American Pathologists | IL | $95.0M | Department of Veterans Affairs |
| University of Illinois | IL | $73.1M | 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.