| QLQuality Liquid Feed INC | Lasalle, IL | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| RDR.r. Donnelley Mendota INC. | Mendota, IL | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| SSauer-danfoss | Lasalle, IL | Machinery Manufacturing333995 | — | ◇ UNVERIFIED |
| SASigan America LLC | Ottawa, IL | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| SRStarved Rock Adventures, INC. | Ottawa, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| SDStreator Dependable Mfg INC | Streator, IL | Machinery Manufacturing333924 | — | ◇ UNVERIFIED |
| TMTci Mfg | Walnut, IL | Machinery Manufacturing333131 | — | ◇ UNVERIFIED |
| TMTci Mfg & Equipment Sales INC | Walnut, IL | Machinery Manufacturing333131 | — | ◇ UNVERIFIED |
| TTeleweld | Streator, IL | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| TITeleweld INC | Streator, IL | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| TITuscarora INC | Streator, IL | Plastics and Rubber Products Manufacturing326140 | — | ◇ UNVERIFIED |
| UPUc Paving INC | Troy Grove, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| USUtica Silica LLC | Lasalle, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| USUtica Silicates Plt | Utica, IL | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| WIWpw Industries INC | Streator, IL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| ASAlloy Specialties, Inc. - Streator | Streator, IL | Fabricated Metal Product Manufacturing332322 | 20–99 | ◐ LIKELY ACTIVE |
| ANAmerican Nickeloid Company - Peru Facility | Peru, IL | Fabricated Metal Product Manufacturing332812 | 100–499 | ◐ LIKELY ACTIVE |
| ACAqua Control INC | Spring Valley, IL | Machinery Manufacturing333911 | 1–19 | ◐ LIKELY ACTIVE |
| AFAvanti Foods | Walnut, IL | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| BBBlack Bros. Co. | Mendota, IL | Machinery Manufacturing333249 | 20–99 | ◐ LIKELY ACTIVE |
| CRCoal Run Creek Distilling Company | Streator, IL | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| DBDPH Biologicals LLC | Princeton, IL | Chemical Manufacturing325311 | 1–19 | ◐ LIKELY ACTIVE |
| IRIllinois River Winery | Utica, IL | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| IVIllinois Valley Materials, LLC | Tonica, IL | Nonmetallic Mineral Product Manufacturing327910 | — | ◐ LIKELY ACTIVE |
| KSKindred Spirits Distillery INC | North Utica, IL | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| LCLCN Closers | Princeton, IL | Fabricated Metal Product Manufacturing332510 | 100–499 | ◐ LIKELY ACTIVE |
| LLLiberty Laser Solutions, INC. | Marseilles, IL | Miscellaneous Manufacturing339940 | — | ◐ LIKELY ACTIVE |
| MMMacs Meats LLC | Ottawa, IL | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| MRMareta's Ravioli, Inc. | Leonore, IL | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| MNMaze Nails | Peru, IL | Fabricated Metal Product Manufacturing332618 | 20–99 | ◐ LIKELY ACTIVE |
| MMendota | Mendota, IL | Plastics and Rubber Products Manufacturing326122 | 100–499 | ◐ LIKELY ACTIVE |
MTM Recognition | Princeton, IL | Miscellaneous Manufacturing339910 | 100–499 | ◐ LIKELY ACTIVE |
| ODOttawa Dental Laboratory, LLC - Norris Location | Ottawa, IL | Miscellaneous Manufacturing339116 | 20–99 | ◐ LIKELY ACTIVE |
| ODOttawa Dental Laboratory, LLC - Starfire Location | Ottawa, IL | Miscellaneous Manufacturing339116 | 100–499 | ◐ LIKELY ACTIVE |
| PNPilkington NSG | Ottawa, IL | Nonmetallic Mineral Product Manufacturing327211 | 100–499 | ◐ LIKELY ACTIVE |
| PPPretium Peru | Peru, IL | Plastics and Rubber Products Manufacturing326160 | 20–99 | ◐ LIKELY ACTIVE |
| RFRidley Feed Ingredients | Mendota, IL | Food Manufacturing311119 | 100–499 | ◐ LIKELY ACTIVE |
| RSRiverfront Stamping LLC | Spring Valley, IL | Fabricated Metal Product Manufacturing332119 | 20–99 | ◐ LIKELY ACTIVE |
| SOSika Ottawa | Ottawa, IL | Chemical Manufacturing325998 | 1–19 | ◐ LIKELY ACTIVE |
| SSingle | Neponset, IL | Machinery Manufacturing333131 | 100–499 | ◐ LIKELY ACTIVE |
| SMSmall Memories Winery LLC | Ottawa, IL | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| SUStar Union Spirits LLC | Peru, IL | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| TFTyson Fresh Meats, Inc. | Ottawa, IL | — | — | ◐ LIKELY ACTIVE |
| UPUSA Pallet & Warehousing, INC | Streator, IL | Wood Product Manufacturing321920 | — | ◐ LIKELY ACTIVE |
| UTUS Truck Body East | Streator, IL | Transportation Equipment Manufacturing336211 | 20–99 | ◐ LIKELY ACTIVE |
| AAAdvanced Asphalt CO | Utica, IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| AAAdvanced Asphalt CO | Kewanee, IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| APAir Products and Chemicals INC | Lasalle, IL | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| AWAllied Waste Services of North America LLC | Ottawa, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AMAmerican Machine INC | Mendota, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |