| Manufacturing Companies |
| Company Name | Industry Type | Park |
| Aryzta | Manufacturer of frozen bakery products | Humboldt |
| Bimbo Bakeries USA (Entenmann's) | Bakery food products | Humboldt |
| Cargill Meat Solutions | Retail meat processing facility | Humboldt West |
| Dober Group | Wastewater and chemical treatment | Humboldt |
| EFS Plastics US, Inc. | Plastic recycling and reprocessing | Humboldt |
| E.S. Kluft & Co. | Manufacturer of luxury mattresses | Humboldt North |
| Freedom Corrugated | Corrugated sheet manufacturer | Humboldt |
| Gonnella Frozen Products, LLC. | Frozen bakery products | Humboldt North |
| Graham Packaging | Plastic bottles | Humboldt |
| Hershey Company | Molded chocolate products | Humboldt |
| Insteel Wire Products | Welded wire mesh | Humboldt |
| Meadow Burke Products | Paving & concrete products | Humboldt |
| Pennsylvania Monument Company | Monument manufacturing | Humboldt |
| PFNonwovens | Nonwoven fabric | Humboldt |
| Polyglass USA | Rolled roofing materials | Humboldt |
| Pretium Packaging | Clear polyester bottles | Humboldt |
| Pretium Packaging | PVC containers | Humboldt |
| Progressive Converting | Paper converting services | Humboldt |
| Simmons Company | Mattresses | Humboldt |
| Spears Manufacturing | PVC Manifolds | Humboldt |
| TC Transcontinental | Multiwall bags | Humboldt |
| Vita Line Products | Manufacturer of pet food | Humboldt North |
