| AFAhlstrom Filtration, LLC. | Taylorville | Paper Manufacturing | 322120 | 20–99 | ● ACTIVE |
| GGGsi Group LLC | Assumption | Fabricated Metal Product Manufacturing | 332999 | — | ◐ LIKELY ACTIVE |
| GGGsi Group | Taylorville | Fabricated Metal Product Manufacturing | 332999 | — | ◇ UNVERIFIED |
 Pro Shot Products INC | Taylorville | Fabricated Metal Product Manufacturing | 332994 | — | ◐ LIKELY ACTIVE |
| GNGlanbia Nutritionals | Taylorville | Miscellaneous Manufacturing | 339999 | — | ◐ LIKELY ACTIVE |
 Archer Daniels Midland | Taylorville | Food Manufacturing | 311222 | — | ◇ UNVERIFIED |
| BBBoarman Bros Partnership | Kincaid | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| BABrandis Aircraft | Taylorville | Fabricated Metal Product Manufacturing | 332812 | — | ◇ UNVERIFIED |
| CCContractors Concrete INC | Pana | Nonmetallic Mineral Product Manufacturing | 327320 | — | ◇ UNVERIFIED |
| PRPoggenpohl Redi-mix | Morrisonville | Nonmetallic Mineral Product Manufacturing | 327320 | — | ◇ UNVERIFIED |
| PRPoggenpohl Redi-mix | Taylorville | Nonmetallic Mineral Product Manufacturing | 327320 | — | ◇ UNVERIFIED |
| SHState Highway Construction | Taylorville | Petroleum and Coal Products Manufacturing | 324121 | — | ◇ UNVERIFIED |
| SHState Highway Construction CORP INC | Assumption | Petroleum and Coal Products Manufacturing | 324121 | — | ◇ UNVERIFIED |
| SHState Highway Construction CORP INC | Pana | Petroleum and Coal Products Manufacturing | 324121 | — | ◇ UNVERIFIED |
| TFTri-county Feed & Seed | Pana | Food Manufacturing | 311119 | — | ◇ UNVERIFIED |
| AWArpeggio Winery, LLC | Pana | Beverage and Tobacco Product Manufacturing | 312130 | — | ◐ LIKELY ACTIVE |
| CGCypress Grove Brewing | Assumption | Beverage and Tobacco Product Manufacturing | 312140 | — | ◐ LIKELY ACTIVE |
| GNGlanbia Nutrutionals (NA) Inc. Taylorville | Taylorville | Food Manufacturing | 311999 | 20–99 | ◐ LIKELY ACTIVE |
| GAGSI : Assumption | Assumption | Machinery Manufacturing | 333111 | 100–499 | ◐ LIKELY ACTIVE |
| GCGSI : Corporate | Assumption | Machinery Manufacturing | 333111 | 100–499 | ◐ LIKELY ACTIVE |
| GTGSI : Taylorville | Taylorville | Machinery Manufacturing | 333111 | 100–499 | ◐ LIKELY ACTIVE |
| PMPFG Manufacturing Great Western Illinois - 4024 | Pana | Food Manufacturing | 311225 | 20–99 | ◐ LIKELY ACTIVE |
| TPTaylorville Plant | Taylorville | Wood Product Manufacturing | 321920 | 1–19 | ◐ LIKELY ACTIVE |
| BIBayer Illinois Production CO LLC | Stonington | Food Manufacturing | 311119 | — | ◇ UNVERIFIED |
| BMBayer Midwest Production CO LLC | Stonington | Food Manufacturing | 311119 | — | ◇ UNVERIFIED |
| COCity of Pana | Pana | Nonmetallic Mineral Product Manufacturing | 327410 | — | ◇ UNVERIFIED |
| CPColonial Pantry 1 | Stonington | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| DCDesign Corrugating Company | Taylorville | Fabricated Metal Product Manufacturing | 332710 | — | ◇ UNVERIFIED |
| DADu-kane Asphalt CO | Pana | Petroleum and Coal Products Manufacturing | 324121 | — | ◇ UNVERIFIED |
| EBEpley Brothers INC | Taylorville | Food Manufacturing | 311119 | — | ◇ UNVERIFIED |
| HTHershey Towers | Taylorville | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| JKJack Kennedy Metal Products & Bldgs INC | Langleyville | Fabricated Metal Product Manufacturing | 332322 | — | ◇ UNVERIFIED |
| M1Mach 1 Food Shop 8 | Taylorville | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| M1Mach 1 Food Shop 9 | Taylorville | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| MTMidwest Tire Solutions | Morrisonville | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| PBPana Bp | Pana | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| PRPoggenpohl Redi-mix | Pana | Nonmetallic Mineral Product Manufacturing | 327320 | — | ◇ UNVERIFIED |
| SMShasteers Marathon | Pana | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| TATaylorville Airport | Taylorville | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| TSTinuum Services LLC | Kincaid | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| WRWood River Pipelines LLC Buckeye | Blue Mound | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
