| CGChicago Gaming Cabinets | Chicago | IL | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| CPChicago Plating INC | Chicago | IL | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| CPChicago Press CORP | Chicago | IL | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| CSChicago Specialties, LLC | Chicago | IL | Chemical Manufacturing325100 | — | ◇ UNVERIFIED |
| CSChicago Steel Rule Die & Fabricators CO | Chicago | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| CSChicago Sterilization Services | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CTChicago Title Land Trust | Chicago | IL | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| CMChilo Manufacturing & Plating Company | Chicago | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| COCity of Chicago | Chicago | IL | Paper Manufacturing322212 | — | ◇ UNVERIFIED |
| CCClear Channel Outdoor | Chicago | IL | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| CPClorox Products | Chicago | IL | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| CMClybourn Metal Finishing CO | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| CCCoke Contracting INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CFColumbus Foods | Chicago | IL | Petroleum and Coal Products Manufacturing324199 | — | ◇ UNVERIFIED |
| CFCommercial Forged Products | Chicago | IL | Fabricated Metal Product Manufacturing332111 | — | ◇ UNVERIFIED |
| CIConnelly-gpm INC | Chicago | IL | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| CMCowhey Materials and Fuel | Chicago | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| CPCraftsman Plating & Tinning | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| CPCraftsman Plating & Tinning CORP | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| CECrawford Electric Generating Station | Chicago | IL | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| CLCrawford Laboratories | Chicago | IL | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| DSDa Stuart CO | Chicago | IL | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| DMDehler Manufacturing CO INC | Chicago | IL | Furniture and Related Product Manufacturing337124 | — | ◇ UNVERIFIED |
| DTDelta Technologies | Chicago | IL | Electrical Equipment, Appliance & Component Manufacturing335313 | — | ◇ UNVERIFIED |
| DPDiemand Printing CO INC | Chicago | IL | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| DPDiemand Printing CO INC | Chicago | IL | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| DRDigital Realty Trust LP | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| DIDike-o-seal INC | Chicago | IL | Machinery Manufacturing333248 | — | ◇ UNVERIFIED |
| DIDover Industrial Chrome INC | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| DKDreis & Krump Mfg CO | Chicago | IL | Machinery Manufacturing333513 | — | ◇ UNVERIFIED |
| DSDurable Specialty Coatings | Chicago | IL | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| DADuro Art Industries INC | Chicago | IL | Miscellaneous Manufacturing339994 | — | ◇ UNVERIFIED |
| EPEaglebrook Plastics INC | Chicago | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| EGEagle Grinding Wheel CORP | Chicago | IL | Nonmetallic Mineral Product Manufacturing327910 | — | ◇ UNVERIFIED |
| EPEagle Painting & Maint CO | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| EFEconomy Folding Box CORP | Chicago | IL | Paper Manufacturing322212 | — | ◇ UNVERIFIED |
| EPEconomy Plating INC | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| E3Eleven 35 LLC | Chicago | IL | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
| EMElg Metals | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| EBElston Block Plant | Chicago | IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| EWEmpire Wood Carving CO INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| EPEngineered Polymer Solutions INC | Chicago | IL | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| EGEnteron Group LLC | Chicago | IL | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| EMEr Moore CO | Chicago | IL | Apparel Manufacturing315000 | — | ◇ UNVERIFIED |
| ECExodus Communications | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| FCFabien's Cabinets | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| FCFairmont CORP Carpet Cushion Plant | Chicago | IL | Plastics and Rubber Products Manufacturing326140 | — | ◇ UNVERIFIED |
| FIFci INC | Chicago | IL | Wood Product Manufacturing321911 | — | ◇ UNVERIFIED |
| FCFederal Chicago CORP | Chicago | IL | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| FMFederal - Mogul Driveline Products | Chicago | IL | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
