 The Ifh Group, INC. | Rock Falls | IL | Fabricated Metal Product Manufacturing332322 | 100-499 | ● ACTIVE |
| IFIllinois Forge CO | Rock Falls | IL | Fabricated Metal Product Manufacturing332111 | — | ◐ LIKELY ACTIVE |
| MSMetal Spinners - a Division of Samuel, Son & CO. (usa) INC. | Rock Falls | IL | Fabricated Metal Product Manufacturing332119 | — | ◐ LIKELY ACTIVE |
| ICIndustrial Coatings | Rock Falls | IL | Petroleum and Coal Products Manufacturing324122 | 1-19 | ◇ UNVERIFIED |
| MCMid Continent Fasteners INC | Rock Falls | IL | Miscellaneous Manufacturing339993 | 1-19 | ◇ UNVERIFIED |
| AAAdvanced Asphalt INC | Rock Falls | IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| AIArris International INC | Rock Falls | IL | Computer and Electronic Product Manufacturing334000 | — | ◇ UNVERIFIED |
| CRCimco Resources | Rock Falls | IL | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| DCDiversified Composites CORP | Rock Falls | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| HLHueber LLC | Rock Falls | IL | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| INInvenergy Nelson LLC | Rock Falls | IL | Chemical Manufacturing325193 | — | ◇ 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 |
| MIMicro Industries INC | Rock Falls | IL | Primary Metal Manufacturing331522 | — | ◇ UNVERIFIED |
| NINorthwest Illinois Construction CO | Rock Falls | IL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ 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 |
| UPUnited Parcel Service | Rock Falls | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MSMetal Spinners Rock Falls | Rock Falls | IL | Fabricated Metal Product Manufacturing332119 | 20-99 | ◐ LIKELY ACTIVE |
| BBBrummel Beef and Locker LLC | Rock Falls | IL | Food Manufacturing311612 | 1-19 | ◇ UNVERIFIED |
| COChas O Larson CO | Rock Falls | IL | Fabricated Metal Product Manufacturing332813 | 20-99 | ◇ UNVERIFIED |
| SWSterling Wire Products, Inc. | Rock Falls | IL | Fabricated Metal Product Manufacturing332618 | 1-19 | ◇ UNVERIFIED |
| BRBoss Roofing Siding Experts INC | Rock Falls | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| COCity of Rock Falls | Rock Falls | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ELExpress Lane Gas & Food Mart | Rock Falls | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ELExpress Lane Gas & Food Mart | Rock Falls | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| IFIfh Finishing Facility | Rock Falls | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| MMMatt Mcginn | Rock Falls | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| NSNorthwestern Steel & Wire CO | Rock Falls | IL | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| RRRock River Tool & Die INC | Rock Falls | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| THTramec Hill Fastener, LLC | Rock Falls | IL | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| WTWiersema Trucking INC | Rock Falls | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| WHWorkman Harley Davidson INC | Rock Falls | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
