 J. T. Cullen CO INC | Fulton, IL | Fabricated Metal Product Manufacturing332312 | 20–99 | ● ACTIVE |
| WCWahl Clipper CORP | Sterling, IL | Electrical Equipment, Appliance & Component Manufacturing335210 | 500+ | ● ACTIVE |
| DSDeines-nitz Solutions, LLC | Erie, IL | Fabricated Metal Product Manufacturing332312 | 20–99 | ● ACTIVE |
| MMMaclean Mallard LLC | Sterling, IL | Machinery Manufacturing333922 | 100–499 | ● ACTIVE |
 The Ifh Group, INC. | Rock Falls, IL | Fabricated Metal Product Manufacturing332322 | — | ● ACTIVE |
| AMApollo Medical Products CORP | Prophetstown, IL | Miscellaneous Manufacturing339112 | — | ● ACTIVE |
 Sterling Business Machines INC | Sterling, IL | Miscellaneous Manufacturing339940 | — | ● ACTIVE |
| FMFrantz Mfg CO - Bearing Div | Sterling, IL | Fabricated Metal Product Manufacturing332991 | — | ◐ LIKELY ACTIVE |
| MUMenk USA | Sterling, IL | Machinery Manufacturing333414 | 20–99 | ◐ LIKELY ACTIVE |
| AKAgri King | Fulton, IL | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| IFIllinois Forge CO | Rock Falls, IL | Fabricated Metal Product Manufacturing332111 | — | ◇ UNVERIFIED |
| MSMetal Spinners - a Division of Samuel, Son & CO. (usa) INC. | Rock Falls, IL | Fabricated Metal Product Manufacturing332119 | — | ◇ UNVERIFIED |
| RRRock River Fabrications | Lyndon, IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| FCFulton CORP | Fulton, IL | Fabricated Metal Product Manufacturing332116 | 100–499 | ◐ LIKELY ACTIVE |
| PGProphet Gear CO. | Prophetstown, IL | Fabricated Metal Product Manufacturing332117 | 1–19 | ◐ LIKELY ACTIVE |
| SSSterling Systems & Controls | Sterling, IL | Electrical Equipment, Appliance & Component Manufacturing335314 | 20–99 | ◐ LIKELY ACTIVE |
| AAAdvanced Asphalt INC | Rock Falls, IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| AIArris International INC | Rock Falls, IL | Computer and Electronic Product Manufacturing334000 | — | ◇ UNVERIFIED |
| AMAstec Mobile Screens | Sterling, IL | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| BPBob Propheter Construction LLC | Sterling, IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CRCimco Recycling INC | Sterling, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CCClimco Coils | Morrison, IL | Computer and Electronic Product Manufacturing334416 | — | ◇ UNVERIFIED |
| CCClimco Coils CO | Morrison, IL | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| DDDana Driveshaft Manufacturing LLC | Sterling, IL | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| DCDiversified Composites CORP | Rock Falls, IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| DLDrives LLC | Fulton, IL | Fabricated Metal Product Manufacturing332111 | — | ◇ UNVERIFIED |
| FMFrantz Mfg CO | Sterling, IL | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| GMGateway Marble Products | Fulton, IL | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| GEGeneral Electric CO | Morrison, IL | Computer and Electronic Product Manufacturing334512 | — | ◇ UNVERIFIED |
| GIGenesis Iii | Prophetstown, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| GIGrowmark INC | Albany, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| HLHueber LLC | Rock Falls, IL | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| IPImh Products INC | Prophetstown, IL | Fabricated Metal Product Manufacturing332116 | — | ◇ UNVERIFIED |
| ICIndustrial Coatings | Rock Falls, IL | Petroleum and Coal Products Manufacturing324122 | — | ◇ UNVERIFIED |
| KAKoch Asphalt CO | Rock Falls, IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LBLawrence Brothers INC. Plant 2 | Rock Falls, IL | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| LHLawrence Hardware | Sterling, IL | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| LILinde INC | Sterling, IL | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| MIMicro Industries INC | Rock Falls, IL | Primary Metal Manufacturing331522 | — | ◇ UNVERIFIED |
| MIMicron Industries CORP | Sterling, IL | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| MGMorrison Grease Recycling INC | Morrison, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| NMNational Manufacturing CO | Sterling, IL | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| NSNorthwestern Steel and Wire | Sterling, IL | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| NINorthwest Illinois Construction CO | Rock Falls, IL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| QPQuality Plating | Sterling, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| QRQuality Ready Mix Concrete CO | Sterling, IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| RFReliant Fastener - Div of Reliant Industries | Rock Falls, IL | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| RFRock Falls Hot Mix Asphalt Plt | Rock Falls, IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| RARotary Airlock LLC | Rock Falls, IL | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| SHScotts Hyponex | Morrison, IL | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
