| TMToyota Motor North America | Plymouth | MI | Transportation Equipment Manufacturing336111 | — | ◇ UNVERIFIED |
| UCUnigraphics Color CORP | Plymouth | PA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| WMWe-design Manufacturing | Plymouth | NE | Machinery Manufacturing333111 | — | ◇ UNVERIFIED |
| WCWestrock Cp, LLC | Plymouth | IN | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| WPWhitley Products, INC. | Plymouth | IN | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| CPCrossties Pluss, LLC | Plymouth | NC | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| DTDiverse Tooling, INC. | Plymouth | WI | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| HMHouck Machine Company | Plymouth | MN | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| MPMatchless Plastics INC | Plymouth | MN | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| AWAbsopure Water | Plymouth | MI | Beverage and Tobacco Product Manufacturing312112 | — | ◇ UNVERIFIED |
| AWAbsopure Water CO | Plymouth | MI | Beverage and Tobacco Product Manufacturing312112 | — | ◇ UNVERIFIED |
| AIAccraply INC | Plymouth | MN | Machinery Manufacturing333243 | — | ◇ UNVERIFIED |
| ADAcrylic Design Associates | Plymouth | MN | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| AUAdient US LLC | Plymouth | MI | Transportation Equipment Manufacturing336360 | — | ◇ UNVERIFIED |
| AFAdvanced FRP Systems, Inc. | Plymouth | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| AVAmerican Velodur Metal INC | Plymouth | MA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| AMAutocam Medical | Plymouth | MA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| BSBae Systems Info & Electronic Sys INC | Plymouth | MA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| BSBae Systems Information & Electronic Systems Integration INC | Plymouth | MA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| BEBanner Engineering CORP | Plymouth | MN | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| BCBatch Coffee LLC | Plymouth | MA | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| BPBayard Printing Group | Plymouth | PA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| BUBern Unlimited, INC. | Plymouth | MA | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| BLBioLine, LLC | Plymouth | IN | Plastics and Rubber Products Manufacturing326111 | — | ◇ UNVERIFIED |
| BLBookBrowsers LLC | Plymouth | MA | Printing and Related Support Activities323120 | — | ◇ UNVERIFIED |
| BSBrenner Signs & Awnings, LLC | Plymouth | MA | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| BSBrenner Signs LLC | Plymouth | MA | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| BPBrookdale Plastics | Plymouth | MN | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| BHBusiness Hub LLC | Plymouth | NH | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| CRCantel - Revox | Plymouth | MN | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| CFCarbon Fishing | Plymouth | MA | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| CMCayenne Medical INC | Plymouth | MN | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| CSCbt Services INC | Plymouth | NC | Paper Manufacturing322121 | — | ◇ UNVERIFIED |
| CCCdf Corporation | Plymouth | MA | Plastics and Rubber Products Manufacturing326112 | — | ◇ UNVERIFIED |
| CCCdf Corporation | Plymouth | MA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| CTCertain Teed | Plymouth | WI | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| CHChampion Home Builders, INC. | Plymouth | NC | Wood Product Manufacturing321991 | — | ◇ UNVERIFIED |
 Clarus Medical LLC | Plymouth | MN | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| CTComposite Technology Assemblies LLC | Plymouth | IN | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| CCConstellium Ctec | Plymouth | MI | Primary Metal Manufacturing331315 | — | ◇ UNVERIFIED |
| CTContour T & M Shop Inc | Plymouth | MI | Machinery Manufacturing333515 | — | ◇ UNVERIFIED |
| CICsh Industries, INC. | Plymouth | MA | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| CACustom Actuator Products INC | Plymouth | MN | Machinery Manufacturing333995 | — | ◇ UNVERIFIED |
| CCCustom Craftsman Printing INC | Plymouth | MN | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| CMCypress Multigraphics | Plymouth | MN | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| DWDiversified Wood Products, INC. | Plymouth | NC | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| DPDomtar Paper Company LLC - Plymouth | Plymouth | NC | Paper Manufacturing322110 | — | ◇ UNVERIFIED |
| ELElectrosea LLC | Plymouth | MN | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| ELElectrosea LLC | Plymouth | MN | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| ESElectro Static CORP | Plymouth | MN | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
