Plymouth Industries, Incorporated | Plymouth | WI | Food Manufacturing311513 | 500+ | ● ACTIVE |
| CGCedar Grove Warehouse, Inc. | Plymouth | WI | Food Manufacturing311513 | 20-99 | ● ACTIVE |
M.a.s. Industries, INC. | Plymouth | WI | Printing and Related Support Activities323113 | — | ● ACTIVE |
| MGMasters Gallery Foods, Incorporated | Plymouth | WI | Food Manufacturing311513 | — | ● ACTIVE |
Midstar Printing and Marketing Services, LLC | Plymouth | WI | Printing and Related Support Activities323111 | — | ● ACTIVE |
Sargento Foods INC | Plymouth | WI | Food Manufacturing311513 | — | ● ACTIVE |
| PIPerma-brass, INC. | Plymouth | WI | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
| MTMillennium Technologies LLC | Plymouth | WI | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| PFPlymouth Foam INC | Plymouth | WI | Plastics and Rubber Products Manufacturing326140 | — | ◐ LIKELY ACTIVE |
| IGItw Graphics | Plymouth | WI | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| LSLakeland Sports Center | Plymouth | WI | Food Manufacturing311225 | — | ◇ UNVERIFIED |
| MTMain Tape Company | Plymouth | WI | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| SCSartori Company | Plymouth | WI | Food Manufacturing311513 | — | ◇ UNVERIFIED |
| CCCertainTeed Ceilings - Plymouth | Plymouth | WI | Nonmetallic Mineral Product Manufacturing327420 | 20-99 | ◐ LIKELY ACTIVE |
| CHChicory Hill Vineyards | Plymouth | WI | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| MTMillennium Technologies Plymouth | Plymouth | WI | Fabricated Metal Product Manufacturing332813 | 20-99 | ◐ LIKELY ACTIVE |
| PRPlank Road Distillery, LLC | Plymouth | WI | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| PAPlymouth Agronomy | Plymouth | WI | Chemical Manufacturing325311 | 20-99 | ◐ LIKELY ACTIVE |
Plymouth Industries Plymouth | Plymouth | WI | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| SASartori Administrative Offices | Plymouth | WI | Food Manufacturing311513 | 100-499 | ◐ LIKELY ACTIVE |
| SWSartori Whey Converting | Plymouth | WI | Food Manufacturing311513 | 100-499 | ◐ LIKELY ACTIVE |
| TMTomahawk Manufacturing Inc | Plymouth | WI | Machinery Manufacturing333241 | 20-99 | ◐ LIKELY ACTIVE |
| DTDiverse Tooling, INC. | Plymouth | WI | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| CTCertain Teed | Plymouth | WI | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| EPEvergreen Pallet INC. | Plymouth | WI | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| GWGreater Wisconsin Sheet Metal, INC | Plymouth | WI | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| IPInkWorks Printing LLC | Plymouth | WI | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| KEKNM Enterprises LLC | Plymouth | WI | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| SCSartori Company INC. | Plymouth | WI | Food Manufacturing311513 | — | ◇ UNVERIFIED |
| TRTD Real Estate Holdings, LLC | Plymouth | WI | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| YAYank Aeronautics, LLC | Plymouth | WI | Miscellaneous Manufacturing339930 | — | ◇ UNVERIFIED |
| YAYank Aeronautics, LLC | Plymouth | WI | Miscellaneous Manufacturing339930 | — | ◇ UNVERIFIED |