| AIAbb INC | Saint Louis, MO | Computer and Electronic Product Manufacturing334416 | — | ◇ UNVERIFIED |
| ADAbc Diary INC (dba Pevely Dairy Co) | Saint Louis, MO | Food Manufacturing311511 | — | ◇ UNVERIFIED |
| ABAccurate Business Mailers | Saint Louis, MO | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| AIAce Industries LLC | Gerald, MO | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| AIAcf Industries - Amcar Div - St Charles Mo Facility | Saint Charles, MO | Transportation Equipment Manufacturing336510 | — | ◇ UNVERIFIED |
| ACAetna Coatings INC | Saint Louis, MO | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| AEA E Truck Equipment CO | O Fallon, MO | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| AIAfb International | O Fallon, MO | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| AFAgripride Fs INC | Breese, IL | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| ARAirgas Roxana - Woodriver, Il Co2 Plant | Roxana, IL | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
 Airgas Specialty Products - Granite City | Granite City, IL | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| APAir Products Manufacturing CORP. | Granite City, IL | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| AIAkj Industries INC | Granite City, IL | Petroleum and Coal Products Manufacturing324199 | — | ◇ UNVERIFIED |
| ACAlcoa Composition Foil Facility | Pevely, MO | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| AIAlpla Incorporated | Saint Peters, MO | Plastics and Rubber Products Manufacturing326160 | — | ◇ UNVERIFIED |
| AEAlternative Energy Sources INC | Greenville, IL | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| AMAlton Materials | Alton, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ASAlvey Systems Inc-st Louis | Olivette, MO | Machinery Manufacturing333922 | — | ◇ UNVERIFIED |
| ACAmerican Colloid CO | Granite City, IL | Nonmetallic Mineral Product Manufacturing327992 | — | ◇ UNVERIFIED |
| APAmerican Plating Company | Saint Louis, MO | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ARAmerican Ready Mix-bussen Road | Saint Louis, MO | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ARAmerican Ready Mix-fenton | Saint Louis, MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AIAmteco INC | Pacific, MO | Chemical Manufacturing325131 | — | ◇ UNVERIFIED |
| APApertus Pharmaceuticals | Ballwin, MO | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| AMApex Metal Finishing-apex Metal Finishing | Saint Louis, MO | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| ARAppliance Recylcers INC | Granite City, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
 Archer Daniels Midland CO | Granite City, IL | Food Manufacturing311222 | — | ◇ UNVERIFIED |
| AMArchitectural Metals INC | Saint Louis, MO | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ADArea Diesel Service INC | Carlinville, IL | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
| ARArnold Ready Mix - Cedar Hill | Cedar Hill, MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| ARArnold Ready-mix (desoto) | De Soto, MO | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| AGArrow Group Ind INC | Breese, IL | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| AEArt Effects Unlimited LLC | Saint Louis, MO | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| AWArtistic Wood Finishing Inc-lincoln Rd | Saint Louis, MO | Furniture and Related Product Manufacturing337211 | — | ◇ UNVERIFIED |
| ASAsphalt Sales & Products INC | O'fallon, IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ASAsphalt Sales & Products INC | Edwardsville, IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ASAsphalt Sales & Products INC | Staunton, IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| AMAviation Material and Tech Support | O Fallon, MO | Transportation Equipment Manufacturing336412 | — | ◇ UNVERIFIED |
| AMAviation Material & Tech Supprt | Chesterfield, MO | Transportation Equipment Manufacturing336411 | — | ◇ UNVERIFIED |
| BPBaker Petrolite | Saint Louis, MO | Food Manufacturing311942 | — | ◇ UNVERIFIED |
| BWBarry Wehmiller Co-barry Wehmiller CO | Saint Louis, MO | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| BCBasf Corporation, Inmont Division | Fenton, MO | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| BCBasf Corporation - St. Louis | Saint Louis, MO | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| BABausch and Lomb | Manchester, MO | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| BLBausch & Lomb | O Fallon, MO | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| BAB Auto Parts | East Saint Louis, IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BDBecton Dickinson St Louis | Saint Louis, MO | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| BCBell City Battery Mfg CO | Belleville, IL | Electrical Equipment, Appliance & Component Manufacturing335910 | — | ◇ UNVERIFIED |
| BJBeno J Gundlach CO | Belleville, IL | Fabricated Metal Product Manufacturing332216 | — | ◇ UNVERIFIED |
| BDBenton Drumming CORP | Granite City, IL | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
