NAICS 541330 Engineering services vendors in Illinois
In FY2026 (provisional), vendors headquartered in Illinois recorded $112.28M in net obligations under NAICS 541330 across 143 awards and orders.
- FY2026 net obligations (provisional)
- $112.28M
- FY2026 awards and orders
- 143
- FY2026 vendors
- 42
- FY2027 to date
- $1.90M
- 7 awards and orders so far
Top vendors, FY2026
- 1. NORTHROP GRUMMAN SYSTEMS CORPORATION (Rolling Meadows, IL)$73.19M · 8
- 2. EXP FEDERAL INC. (CHICAGO, IL)$5.68M · 10
- 3. TETRA TECH, INC. (COLLINSVILLE, IL)$4.69M · 2
- 4. C5T CORPORATION (SCOTT AIR FORCE BASE, IL)$3.00M · 1
- 5. TRANS UNION LLC (CHICAGO, IL)$2.91M · 1
- 6. BAILEY EDWARD DESIGN, INC (CHICAGO, IL)$2.68M · 17
- 7. GEO BANCROFT ENGINEERING LLC (Mount Prospect, IL)$2.59M · 14
- 8. COTTER CONSULTING LLC (Burr Ridge, IL)$2.52M · 17
- 9. HANSON PROFESSIONAL SERVICES, INC (SPRINGFIELD, IL)$2.36M · 1
- 10. EXP U.S. SERVICES INC. (CHICAGO, IL)$1.96M · 2
Agencies paying these vendors
- $97.34M
- Department of War (50 awards and orders)
- $4.46M
- Department of Transportation (15 awards and orders)
- $3.04M
- Department of Agriculture (21 awards and orders)
- $2.65M
- General Services Administration (23 awards and orders)
- $2.60M
- Department of Veterans Affairs (16 awards and orders)
- $964.56K
- Department of the Interior (9 awards and orders)
- $385.2K
- Department of State (1 awards and orders)
- $217.13K
- National Aeronautics and Space Administration (3 awards and orders)
Related
- State
- Vendors in Illinois
Net obligations by fiscal year of action, from FPDS contract actions under NAICS 541330. Vendors are placed by their headquarters state in SAM.gov, not by where the work is done. Awards and orders count canonical awards with a positive net in the year; IDV vehicles are not counted. FY2026 is provisional for 120 days after it ends, and DoD withholds awards for 90 days at the source. Methodology