Companies headquartered in Illinois, by prime awards since FY2021
Rows 5,101–5,200 of 5,696, largest first
| Company | City | Primary industry (NAICS) | Prime awards since FY2021 |
|---|---|---|---|
| Silver Cross Hospital & Medical Centers | New Lenox | 622110 General Medical and Surgical Hospitals | $0 |
| Silver Oaks Communications, Inc. | Rock Island | 512110 Motion Picture and Video Production | $0 |
| Sims Recycling Solutions Holdings Inc. | West Chicago | 423930 Recyclable Material Merchant Wholesalers | Subcontractor |
| Sinclair Kossoff | Chicago | 541110 Offices of Lawyers | $0 |
| Sjostrom & Sons Inc. | Rockford | 236220 Commercial and Institutional Building… | Subcontractor |
| Skidmore, Owings & Merrill LLP | Chicago | 541310 Architectural Services | $0 |
| Skilled Computer Resources Corp. | Lebanon | 238210 Electrical Contractors and Other Wiring… | $0 |
| Sko-die, LLC | Morton Grove | 332999 All Other Miscellaneous Fabricated… | Subcontractor |
| Sky Team, Inc. | Rochelle | 611620 Sports and Recreation Instruction | $0 |
| S & L Engineers Ltd. | Chicago | 541330 Engineering Services | Subcontractor |
| S & L Produce, Inc. | Walnut Hill | 424410 General Line Grocery Merchant… | $0 |
| Smaltec International LLC | Lisle | 333517 Machine Tool Manufacturing | $0 |
| Smart Technology Services, Incorporated. | Chicago | 811210 Electronic and Precision Equipment… | $0 |
| S & M Group Inc. | Wood Dale | 334418 Printed Circuit Assembly (Electronic… | $0 |
| Smooth Energy LLC | Naperville | 541350 Building Inspection Services | Subcontractor |
| Snap Diagnostics, LLC | Vernon Hills | 621511 Medical Laboratories | $0 |
| SNC Solutions Inc. | Gibson City | 237130 Power and Communication Line… | $0 |
| Snke, Inc. | Westchester | 541511 Custom Computer Programming Services | $0 |
| Snow Systems Inc. | Wheeling | 561790 Other Services to Buildings… | $0 |
| Sny Island Levee Drainage District | New Canton | $0 | |
| Soal Technologies LLC | Palos Hills | 333242 Semiconductor Machinery Manufacturing | $0 |
| Society For Clinical Trials Inc. | Arlington Heights | $0 | |
| Society Of Gastroenterology Nurses & Associates | Chicago | $0 | |
| Software Tech Enterprises Inc. | Frankfort | 541611 Administrative Management and General… | Subcontractor |
| Soil And Material Consultants, Inc. | Arlington Heights | 541330 Engineering Services | $0 |
| Soliant Consulting Inc. | Chicago | 541511 Custom Computer Programming Services | $0 |
| Solidan, Inc. | Lemont | 611710 Educational Support Services | Subcontractor |
| Somoetic Intel Group, LLC | Lisle | 611430 Professional and Management Development… | Subcontractor |
| Sones De Mexico Ensemble | Chicago | 711130 Musical Groups and Artists | $0 |
| Sonic Manufacturing Corporation | Elk Grove Village | 332710 Machine Shops | Subcontractor |
| Sosavi LLC | Niles | 721110 Hotels (except Casino Hotels) and Motels | $0 |
| Souder Betances & Associates Inc. | Chicago | 541611 Administrative Management and General… | $0 |
| Sound Design Inc. | Plainfield | 238210 Electrical Contractors and Other Wiring… | $0 |
| Sound Seal Inc. | North Aurora | 332312 Fabricated Structural Metal… | Subcontractor |
| Sourcebooks, LLC | Naperville | 513130 Book Publishers | $0 |
| Southern Fs Inc. | Marion | 444240 Nursery, Garden Center, and Farm Supply… | $0 |
| Southern Illinois Healthcare Enterprises, Inc. | Carbondale | 622110 General Medical and Surgical Hospitals | $0 |
| Southern Illinois Healthcare Foundation, Inc. | Sauget | 621399 Offices of All Other Miscellaneous… | $0 |
| Southern Illinois Hospital Services | Carbondale | 622110 General Medical and Surgical Hospitals | $0 |
| Southern Illinois Interiors Inc. | Mascoutah | 238310 Drywall and Insulation Contractors | Subcontractor |
| Southern Illinois Medical Services NFP | Carbondale | 621112 Offices of Physicians, Mental Health… | $0 |
| Southern Illinois Movers, Inc. | Du Quoin | 814110 Private Households | $0 |
| Southern Illinois Orthopedic Center LLC | Herrin | $0 | |
| Southern Illinois University School Of Medicine | Springfield | Subcontractor | |
| Southern Orthopedic Associates Sc | Herrin | 621111 Offices of Physicians (except Mental… | $0 |
| Southland Medical Center LLC | Oak Park | 531120 Lessors of Nonresidential Buildings… | $0 |
| South Side Lumber Inc. | Herrin | 444180 Other Building Material Dealers | $0 |
| South Suburban College | South Holland | 611210 Junior Colleges | $0 |
| South Suburban Housing Center | Homewood | Subcontractor | |
| South Water Street Of Decatur, LLC | Decatur | 531120 Lessors of Nonresidential Buildings… | $0 |
| Southwestern Electric Cooperative, Inc. | Greenville | $0 | |
| Southwestern Illinois College Community College District No 522 | Belleville | 923110 Administration of Education Programs | $0 |
| Space Haus, Ltd. | Chicago | 712190 Nature Parks and Other Similar… | $0 |
| Sparta Corp. | Chicago | 484230 Specialized Freight (except Used Goods)… | $0 |
| Sparta Hotel, Inc. | Columbia | 721110 Hotels (except Casino Hotels) and Motels | $0 |
| Spear Point Contracting Co. | Custer Park | 238110 Poured Concrete Foundation… | $0 |
| Special Mine Services Inc. | West Frankfort | 335931 Current-Carrying Wiring Device… | Subcontractor |
| Special Operations Medical Association | Chicago | $0 | |
| Spectra Holdings Inc. | Itasca | 238330 Flooring Contractors | Subcontractor |
| Spectrum Pharmaceuticals, Inc. | Hawthorn Woods | 325412 Pharmaceutical Preparation Manufacturing | $0 |
| Spherotech Inc. | Lake Forest | 325211 Plastics Material and Resin… | $0 |
| Spirolox Inc. | Lake Zurich | $0 | |
| Splur Nation LLC | Chicago | 561499 All Other Business Support Services | $0 |
| Sppr-dowell, LLC | Chicago | 721110 Hotels (except Casino Hotels) and Motels | $0 |
| Springfield Airport Authority | Springfield | 488119 Other Airport Operations | $0 |
| Springfield Clinic LLP | Springfield | 621111 Offices of Physicians (except Mental… | $0 |
| Springml Inc. | Naperville | 541511 Custom Computer Programming Services | Subcontractor |
| Spyco Industries Inc. | Burr Ridge | 332710 Machine Shops | Subcontractor |
| SRC Electric LLC | Elk Grove Village | 238210 Electrical Contractors and Other Wiring… | $0 |
| S. Shafer Excavating, Incorporated | Granite City | 238910 Site Preparation Contractors | $0 |
| Staab Battery Manufacturing Co. Inc. | Springfield | 423110 Automobile and Other Motor Vehicle… | $0 |
| Stan A. Huber Consultants, Inc. | New Lenox | 541380 Testing Laboratories and Services | Subcontractor |
| Stanard & Associates, Inc. | Chicago | 541612 Human Resources Consulting Services | $0 |
| Stanco Scientific, Inc. | Morris | 811210 Electronic and Precision Equipment… | $0 |
| Standard Industrial & Automotive Equipment, Inc. | Hanover Park | 423850 Service Establishment Equipment… | $0 |
| Stand-up Mri Of Deerfield, LLC | Deerfield | Subcontractor | |
| Stanley Consultants, Inc. | Chicago | 541330 Engineering Services | $0 |
| Stanley Spring And Stamping Corp. | Chicago | 332111 Iron and Steel Forging | Subcontractor |
| Stantec Consulting Services Inc. | Chicago | 541330 Engineering Services | $0 |
| Star Hydraulics LLC | River Grove | 333995 Fluid Power Cylinder and Actuator… | Subcontractor |
| Star Su Company LLC | Hoffman Estates | 333515 Cutting Tool and Machine Tool Accessory… | $0 |
| State Of Illinois | Springfield | $0 | |
| Steamgard LLC | Vernon Hills | 332919 Other Metal Valve and Pipe Fitting… | $0 |
| Steel Grip Inc. | Danville | 315250 Cut and Sew Apparel Manufacturing… | Subcontractor |
| Steel Rebar Manufacturing LLC | East Saint Louis | 327320 Ready-Mix Concrete Manufacturing | $0 |
| Steel River Systems LLC | Rock Falls | 561440 Collection Agencies | Subcontractor |
| St Elizabeths Hospital | Ofallon | $0 | |
| Stelvio Consulting LLC | Chicago | 541519 Other Computer Related Services | Subcontractor |
| Stepan Company | Northbrook | $0 | |
| Stephen Daiter Gallery Inc. | Chicago | 459920 Art Dealers | $0 |
| Sterling Precisions Optics Inc. | Evanston | Subcontractor | |
| Sterling Site Access Solutions LLC | Phoenix | 321999 All Other Miscellaneous Wood Product… | $0 |
| Stickon Adhesive Industries, Inc. | Wauconda | 423840 Industrial Supplies Merchant Wholesalers | $0 |
| St Johns Hospital Of Hospital Sisters Of The Third Order Of St Francis | Springfield | $0 | |
| St Joseph's Hospital Of The Hospital Sisters Third Order Of St Francis | Highland | $0 | |
| St Leo Residence LP | Chicago | $0 | |
| St Louis Prestress Inc. | Glen Carbon | 327390 Other Concrete Product Manufacturing | Subcontractor |
| St. Mary's Hospital, Decatur, Of The Hospital Sisters Of The Third Order Of St. Francis | Decatur | 622110 General Medical and Surgical Hospitals | $0 |
| Stoddard Silencers Inc. | Grayslake | 332999 All Other Miscellaneous Fabricated… | $0 |
| Stonecrest Solutions LLC | Lansing | 541614 Process, Physical Distribution… | $0 |