Fin-con Assembly Group, INC. | O Fallon | MO | Electrical Equipment, Appliance & Component Manufacturing335929 | 20-99 | ◐ LIKELY ACTIVE |
| KAK and P Precast INC | O'fallon | MO | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| PPPermian Plastics, LLC | O Fallon | MO | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| SRSchreiter Ready Mix and Materials INC | O'fallon | MO | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| MIMp Industries, INC. | O'fallon | MO | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
Planet Tool & Gear Inc | O Fallon | MO | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| LTLivingston Tool & Mfg. CO. | O Fallon | MO | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| RERustique Enterprises INC | O'fallon | MO | Fabricated Metal Product Manufacturing332322 | 20-99 | ◇ UNVERIFIED |
| DIData2 Incorporated | O Fallon | MO | Paper Manufacturing322299 | 20-99 | ◐ LIKELY ACTIVE |
| HCHustler Conveyor Company | O Fallon | MO | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| NCNorth Central Stamping, Inc. | O Fallon | MO | Fabricated Metal Product Manufacturing332116 | 20-99 | ◐ LIKELY ACTIVE |
| CDClarkWestern Dietrich Building Systems - O'Fallon, MO | O Fallon | MO | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| CDClarkWestern Dietrich Building Systems - O'Fallon, MO | O'Fallon | MO | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| DIData2 Incorporated | O'Fallon | MO | Paper Manufacturing322299 | 20-99 | ◐ LIKELY ACTIVE |
| HCHustler Conveyor Company | O'Fallon | MO | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| KKrm | O Fallon | MO | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| KKrm | O'Fallon | MO | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| PTPlanet Tool & Gear Inc | O'Fallon | MO | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |