| TPTpg Pressure INC | South Beloit | IL | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| AIAccra Industries INC | South Beloit | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| AFAxium Foods INC | South Beloit | IL | Food Manufacturing311423 | — | ◇ UNVERIFIED |
| BPBesly Products CORP | South Beloit | IL | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
 Fives Landis CORP | South Beloit | IL | Nonmetallic Mineral Product Manufacturing327910 | — | ◇ UNVERIFIED |
| NCNorthwind Concrete Products CO | South Beloit | IL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| PIPrimecast, Inc.(former) | South Beloit | IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| RCRegal Cutting Tools Div Yg-1 CO LTD | South Beloit | IL | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
| TPTreehouse Private Brands INC | South Beloit | IL | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| TITrenwyth Industries | South Beloit | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| TITrenwyth Industries | South Beloit | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| VPVickerman Products | South Beloit | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| CDCustom Designed Cabinetry and Construction, INC. | South Beloit | IL | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
 Custom Iron Works, INC. | South Beloit | IL | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| DMD & M Manufacturing | South Beloit | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| FJFlying J Travel Plaza | South Beloit | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| FPForterra Pipe & Precast, LLC | South Beloit | IL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| JBJjj Brass & Aluminum Foundry, LLC | South Beloit | IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| KTKeene Technologies INC | South Beloit | IL | Machinery Manufacturing333243 | — | ◇ UNVERIFIED |
| RRRoad Ranger 156 | South Beloit | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| RRRoad Ranger 205 | South Beloit | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| RRRoad Ranger 232 | South Beloit | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| RERock Energy Cooperative | South Beloit | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| SASjostrom and Sons INC | South Beloit | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SBSouth Beloit Fire Department | South Beloit | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| UOUsdol Osha- North Aurora | South Beloit | IL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| WCWorld Contract Packagers INC. | South Beloit | IL | Plastics and Rubber Products Manufacturing326111 | — | ◇ UNVERIFIED |
