| ARAmerenenergy Resouces Generating CO | Peoria, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AAAmerican Allied Rail | Washington, IL | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
 Archer Daniels Midland CO | Peoria, IL | Food Manufacturing311213 | — | ◇ UNVERIFIED |
| BPBabbitrite Products CO | Peoria, IL | Transportation Equipment Manufacturing336340 | — | ◇ UNVERIFIED |
| BIBehr Iron & Metal | Peoria, IL | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| BCBemis CO INC | Peoria, IL | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| BTBoley Tool & Machine | East Peoria, IL | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| BIBradford Industries | Bradford, IL | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| CICargill INC | Goodfield, IL | Food Manufacturing311111 | — | ◇ UNVERIFIED |
| CSCarri Scharf Materials INC | Bartonville, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
 Cast Technologies INC. | Peoria, IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| CICaterpillar INC | Peoria, IL | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| CICaterpillar INC | Peoria, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CICaterpillar INC | Mossville, IL | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| CICaterpillar INC | Peoria, IL | Plastics and Rubber Products Manufacturing326291 | — | ◇ UNVERIFIED |
| CICaterpillar INC - Mossville Facility | Mossville, IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| CICaterpillar Inc- Peoria Proving Ground | East Peoria, IL | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| CAChemtura Agrosolutions -trace Chemicals | Pekin, IL | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| CMColumbus Mckinnon Corp/weco | Eureka, IL | Machinery Manufacturing333923 | — | ◇ UNVERIFIED |
| CPConsolidated Paving INC | Peoria, IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| CBCorbion Biotech INC | Peoria, IL | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| CCCornick Concrete Products CO | Pekin, IL | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| CWCostco Wholesale 1126 | East Peoria, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CECrane Equipment & Service of Illinois Dba Washington Equipment | Eureka, IL | Machinery Manufacturing333923 | — | ◇ UNVERIFIED |
| CGCustom Graphics INC | Bartonville, IL | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| EHEdward Hine CO | Peoria, IL | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| EIElecsys INC | Peoria, IL | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| EHEnergy Home Insulation INC | East Peoria, IL | Machinery Manufacturing333120 | — | ◇ UNVERIFIED |
| ESErickson Steel CO | Pekin, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| FMFca Manufacturing | Princeville, IL | Machinery Manufacturing333112 | — | ◇ UNVERIFIED |
| FFibrebond | Edelstein, IL | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| FCFleming-potter CO INC | Peoria, IL | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| FBFlowers Baking CO of Peoria LLC | Peoria, IL | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| FCFormaloy CORP | Morton, IL | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| FFFp Fast Printing | Peoria, IL | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| GEGem Equipment & Mfg | Roanoke, IL | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| GBGlideway Bed Carriage Mfg CO | Peoria, IL | Furniture and Related Product Manufacturing337910 | — | ◇ UNVERIFIED |
| GGGreen Gables INC | Bradford, IL | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| HFHenry Fertilizer | Henry, IL | Chemical Manufacturing325312 | — | ◇ UNVERIFIED |
| ITIdeal Troy CO | Peoria, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| IFIllini Foundry CO | Bartonville, IL | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
| IWIllinois-american Water Company San Koty Facility | Peoria, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ICIllinois Central College - North Campus | Peoria, IL | Electrical Equipment, Appliance & Component Manufacturing335911 | — | ◇ UNVERIFIED |
| IIIncobrasa Illinois, LTD. | Pekin, IL | Food Manufacturing311119 | — | ◇ UNVERIFIED |
 Incobrasa Industries, LTD. | Pekin, IL | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| IIngredion | Mapleton, IL | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| IPInternational Paper | Peoria, IL | Paper Manufacturing322222 | — | ◇ UNVERIFIED |
| ISInternational Supply CO | Edelstein, IL | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| IMIron Mountain Info Management INC | East Peoria, IL | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| JJimax | Peoria, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
