| RERustique Enterprises INC | O'fallon | MO | Fabricated Metal Product Manufacturing332322 | 20-99 | ◇ UNVERIFIED |
| 6D601 Direct Llc-o'fallon Plant | O'fallon | MO | Paper Manufacturing322230 | — | ◇ UNVERIFIED |
| AEA E Truck Equipment CO | O Fallon | MO | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| ASA Square Systems INC | O Fallon | MO | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| BLBausch & Lomb | O Fallon | MO | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| BTBraking Technologies Inc-braking Technologies INC | O'fallon | MO | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| EEEhv-weidmann Electric Paper Div | O'fallon | MO | Paper Manufacturing322221 | — | ◇ UNVERIFIED |
| IEINC Environmental Recycling | O'fallon | MO | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| KRKienstra Ready Mix | O'fallon | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RRRotadyne Roll Group | O'fallon | MO | Textile Mills313320 | — | ◇ UNVERIFIED |
| SCStar Concrete Co-star Concrete CO | O'fallon | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| TDTtt Dustless Blasting LLC | O Fallon | MO | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| WMWilson Marble INC | O Fallon | MO | Plastics and Rubber Products Manufacturing326121 | — | ◇ UNVERIFIED |
| AEAdvance Engineering and Manufacturing Company | O Fallon | MO | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| ANAxens North America, INC. | O Fallon | MO | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| CCCaliber Cast Stone | O Fallon | MO | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CACarpet Art of America, Inc. | O Fallon | MO | Textile Product Mills314110 | — | ◇ UNVERIFIED |
| CICenveo, INC. | O Fallon | MO | Paper Manufacturing322299 | — | ◇ UNVERIFIED |
| CHClaypool Holdings LLC Dba Merric Millwork & Seating | O Fallon | MO | Furniture and Related Product Manufacturing337212 | — | ◇ UNVERIFIED |
| EUElectrometals Usa, LLC | O Fallon | MO | Primary Metal Manufacturing331419 | — | ◇ UNVERIFIED |
| GCG & C Partners, LLC | O' Fallon | MO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| GGerdau | O Fallon | MO | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| HPHelios Precision Tech LTD | O Fallon | MO | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| HWHulen Woodworking, LLC | O'fallon | MO | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| MLMrmj LLC | O Fallon | MO | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| NFNew Frontier Materials Operations Alpha LLC O'fallon Asphalt Plant | O'fallon | MO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| NNordyne | O Fallon | MO | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| OAOzark Assemblies, L.L.C. | O'Fallon | MO | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PAPhoenix / Anjon Building Materials, Inc. | O'Fallon | MO | Fabricated Metal Product Manufacturing332919 | — | ◇ UNVERIFIED |
| RFReliable Fab and Manufacturing INC. | O Fallon | MO | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| SRSchreiter Ready Mix | O Fallon | MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SMS. M. F., Inc. | O'Fallon | MO | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| SIStrait-flex International INC. | O Fallon | MO | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
