Stroco Manufacturing, INC. | Hazelwood | 100–499 | ● ACTIVE |
| ACAerospace Composite Center, LLC | Hazelwood | 500+ | ● ACTIVE |
| EIEssex Industries, INC. | Saint Louis | 1–19 | ● ACTIVE |
Alert Warning Systems LLC | Saint Louis | — | ● ACTIVE |
| CICenturion Investments INC | Chesterfield | — | ● ACTIVE |
Conley & Associates INC | Ballwin | — | ● ACTIVE |
Peregrine Industries, INC. | Saint Louis | — | ● ACTIVE |
The Boeing Company | Hazelwood | — | ● ACTIVE |
| VAVortice Avionics, INC. | Saint Louis | — | ● ACTIVE |
Essex Industries, INC. | Saint Louis | — | ◐ LIKELY ACTIVE |
Mccay Tool and Engineering Company | Saint Louis | — | ◐ LIKELY ACTIVE |
| TBThe Boeing CO | Hazelwood | — | ◐ LIKELY ACTIVE |
| BCBoeing Company Buildings 245 248 the | Saint Louis | — | ◐ LIKELY ACTIVE |
| BCBoeing Company the | Saint Louis | — | ◐ LIKELY ACTIVE |
| BCBoeing CO the Building 270 | Hazelwood | — | ◐ LIKELY ACTIVE |
| JFJohn Fabick Tractor CO | Fenton | — | ◐ LIKELY ACTIVE |
| MDMcdonnell Douglas CORP | Hazelwood | — | ◐ LIKELY ACTIVE |
| AMAviation Material & Tech Supprt | Chesterfield | — | ◇ UNVERIFIED |
| CSCgb St. Louis Shipyard-office Barge | Saint Louis | — | ◇ UNVERIFIED |
| CLChrysler Llc, North Assembly Plant | Fenton | — | ◇ UNVERIFIED |
| CSChrysler St. Louis South Assembly Plant | Fenton | — | ◇ UNVERIFIED |
| DADallas Airmotive INC | Chesterfield | — | ◇ UNVERIFIED |
| FIFindlay Industries Inc-chesterfield | Chesterfield | — | ◇ UNVERIFIED |
| MEMahle Engine Components USA Inc-manchester | Manchester | — | ◇ UNVERIFIED |
| MMMcm Management CORP St Louis North Plant | Fenton | — | ◇ UNVERIFIED |
| OOrizon | Fenton | — | ◇ UNVERIFIED |
| CChivvis | Saint Louis | 100–499 | ◐ LIKELY ACTIVE |
| DADallas Airmotive Regional | Chesterfield | 1–19 | ◐ LIKELY ACTIVE |
| DADms Aviation Services, LLC | Wildwood | — | ◐ LIKELY ACTIVE |
| GGravois | Saint Louis | 20–99 | ◐ LIKELY ACTIVE |
| MHMaryland Heights, MO (MO008) | Maryland Heights | 20–99 | ◐ LIKELY ACTIVE |
| SLSt Louis - Hazelwood Hub | Hazelwood | 20–99 | ◐ LIKELY ACTIVE |
| SLSt. Louis, MO | Saint Louis | 1–19 | ◐ LIKELY ACTIVE |
| SLSt. Louis World Class Manufacturing (Challenge Manufacturing Plant 5) | Bridgeton | 1–19 | ◐ LIKELY ACTIVE |
| SSunnen | Saint Louis | 100–499 | ◐ LIKELY ACTIVE |
| BABoeing Aerospace Composite Center | Hazelwood | — | ◇ UNVERIFIED |
| BCBoeing Company the St Louis Bldg 306 | Hazelwood | — | ◇ UNVERIFIED |
| BLBoeing-st. Louis | Saint Louis | — | ◇ UNVERIFIED |
| CMChallenge Manufacturing Company | Bridgeton | — | ◇ UNVERIFIED |
| GAGkn Aerospace Services - St. Louis | Hazelwood | — | ◇ UNVERIFIED |
| HGHaas Group International | Hazelwood | — | ◇ UNVERIFIED |
| JSJ S Parsons & CO | Saint Louis | — | ◇ UNVERIFIED |
| MSManifold Systems INC | Fenton | — | ◇ UNVERIFIED |
| SSaberliner | Clayton | — | ◇ UNVERIFIED |
| SLSt. Louis Component Repair & NDT, LLC | Chesterfield | — | ◇ UNVERIFIED |
| TBThe Boeing Company St. Louis | Saint Louis | — | ◇ UNVERIFIED |