| BSBay State Swiss Cam Design | Alton | NH | Machinery Manufacturing333512 | 1-19 | ◇ UNVERIFIED |
| HIHanley Industries | Alton | IL | Fabricated Metal Product Manufacturing332993 | 20-99 | ◇ UNVERIFIED |
| AMAlton Materials | Alton | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ETEagle Tubular Products INC | Alton | IL | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| IWIllinois-american Water CO | Alton | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| KBKerry Biofunctional Ingredients INC | Alton | IL | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| MPMoore Painting CO | Alton | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MHMrc Holdings | Alton | IL | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| RSRobert Sanders Waste System | Alton | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| JFJensen Fabrication, LLC | Alton | IL | Machinery Manufacturing333514 | 1-19 | ◇ UNVERIFIED |
| AAAct Auto Body | Alton | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AAAndy's Automotive Group | Alton | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BOBreckenridge of Illinois LLC | Alton | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CECharles E Mahoney | Alton | IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CTCrigler Timber Harvesting LLC | Alton | MO | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| DSDarpro Solutions | Alton | IA | Food Manufacturing311613 | — | ◇ UNVERIFIED |
| DHDynamic Hydra-blasting INC | Alton | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| GBGalvan Brother's Service LLC | Alton | TX | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
| GLGateway Laser Technology INC | Alton | IL | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| HIHanley Industries, INC. | Alton | IL | Chemical Manufacturing325920 | — | ◇ UNVERIFIED |
| HPHutchinson Products LLC | Alton | IL | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| IMImperial Manufacturing Group USA INC. | Alton | IL | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| IPIndustrial Process and Sensor, INC. | Alton | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| IBInterstate Brands Corporation Dba Wonder & Hostess | Alton | IL | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| KLKienstra-illinois LLC | Alton | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| KIKienstra INC | Alton | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LILam-tech, INC. | Alton | IL | Wood Product Manufacturing321211 | — | ◇ UNVERIFIED |
| LCLois Christine Lamere | Alton | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MDMary D Hocomb | Alton | IL | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| MFMcclain Forest Products-alton | Alton | MO | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| NINd INC | Alton | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PLPoputopia, LLC | Alton | IL | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| RARicks Auto Body | Alton | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
