Basin Precision Machining LLC | Jefferson | WI | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
| NPNestle Purina Petcare CO | Jefferson | WI | Food Manufacturing311110 | — | ◇ UNVERIFIED |
| KPKendall Packaging - Jefferson Division | Jefferson | WI | Printing and Related Support Activities323110 | — | ◐ LIKELY ACTIVE |
| LFLd Foods - Jefferson Wi | Jefferson | WI | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| ABAztalan Bio LLC | Jefferson | WI | Chemical Manufacturing325193 | — | ◐ LIKELY ACTIVE |
| GPGenerac Power Systems | Jefferson | WI | Machinery Manufacturing333912 | — | ◐ LIKELY ACTIVE |
| BSBriggs & Stratton Power Products Group, LLC | Jefferson | WI | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
| GPGenerac Power Systems INC | Jefferson | WI | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
| ALAmericold Logistics, LLC | Jefferson | WI | — | — | ◐ LIKELY ACTIVE |
| HKHalf Krakt | Jefferson | WI | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| NPNestle Purina Pet Care - Jefferson | Jefferson | WI | Food Manufacturing311111 | 100-499 | ◐ LIKELY ACTIVE |
| SRStable Rock Winery & Distillery | Jefferson | WI | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| VWVetro Winery | Jefferson | WI | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| GIGreen-tech Industries LLC | Jefferson | WI | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| FBForemost Buildings, Inc. | Jefferson | WI | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| FBForemost Buildings, Inc. | Jefferson | WI | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| GCGrande Cheese | Jefferson | WI | Food Manufacturing311511 | — | ◇ UNVERIFIED |
| JAJefferson Area Business Center | Jefferson | WI | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| JCJefferson County Highway Dept | Jefferson | WI | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MTMcDermott Top Shop, L.L.C. | Jefferson | WI | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| TPTyson Prepared Foods | Jefferson | WI | Food Manufacturing311612 | — | ◇ UNVERIFIED |