| LCLaidlaw Corporation | New Castle | DE | Fabricated Metal Product Manufacturing332119 | — | ◇ UNVERIFIED |
| MAMas Air Systems LLC | New Castle | PA | Machinery Manufacturing333413 | — | ◇ UNVERIFIED |
| NCNc-m Chassis Systems, LLC | New Castle | IN | Machinery Manufacturing333924 | — | ◇ UNVERIFIED |
| NCNew Castle Asbestos Site - Former Firestone Plant | New Castle | IN | Transportation Equipment Manufacturing336000 | — | ◇ UNVERIFIED |
| NCNew Castle Foundry/new Castle | New Castle | PA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| NJNews Journal CO | New Castle | DE | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| NXNordson Xaloy | New Castle | PA | Machinery Manufacturing333249 | — | ◇ UNVERIFIED |
| PCPtfe Compounds INC | New Castle | DE | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| RHRwe Holding CO | New Castle | PA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| SISelect Industries, INC | New Castle | PA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| SPSpi Polyols INC. | New Castle | DE | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SCStandard Chlorine of Delaware, INC. Superfund Site | New Castle | DE | Chemical Manufacturing325100 | — | ◇ UNVERIFIED |
| TDTilcon Delaware, INC. - Terminal Avenue | New Castle | DE | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| UCUS Can Co/new Castle Plant | New Castle | PA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| WIWalker, Irwin C. Jr Farm | New Castle | DE | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| WLWilmington Leather Coatings | New Castle | DE | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| YIYrc INC. D/b/a Yrc Freight | New Castle | DE | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| 1C1923 Chili | New Castle | PA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| 2L240 Lisa Dr | New Castle | DE | Furniture and Related Product Manufacturing337212 | 20-99 | ◐ LIKELY ACTIVE |
| 3N373 New Castle DE | New Castle | DE | Food Manufacturing311811 | 20-99 | ◐ LIKELY ACTIVE |
| AFAdvanced Feedscrews | New Castle | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| AIAugustine's Italian Village Inc. | New Castle | PA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| BIBeacon Industries, Inc - New Castle | New Castle | IN | Fabricated Metal Product Manufacturing332813 | 1-19 | ◐ LIKELY ACTIVE |
| BHBoar's Head - New Castle | New Castle | IN | Food Manufacturing311612 | 500+ | ◐ LIKELY ACTIVE |
| BHBoar's Head Provisions Co., Inc. | New Castle | IN | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| BMBPI Minerals, New Castle Facility | New Castle | PA | Nonmetallic Mineral Product Manufacturing327992 | 20-99 | ◐ LIKELY ACTIVE |
| CMCastle Mold & Tool, Inc. | New Castle | PA | Machinery Manufacturing333511 | 20-99 | ◐ LIKELY ACTIVE |
| CSContainer Services Inc - PA | New Castle | PA | Plastics and Rubber Products Manufacturing326160 | 20-99 | ◐ LIKELY ACTIVE |
| ECEllwood City Forge Company | New Castle | PA | Fabricated Metal Product Manufacturing332111 | — | ◐ LIKELY ACTIVE |
| ESEllwood Specialty Metals Company | New Castle | PA | Primary Metal Manufacturing331513 | — | ◐ LIKELY ACTIVE |
| FIFujifilm Imaging Colorants Inc. | New Castle | DE | Chemical Manufacturing325910 | 20-99 | ◐ LIKELY ACTIVE |
| HTHill Team INC | New Castle | PA | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| HNHSM New Castle (217) | New Castle | IN | Plastics and Rubber Products Manufacturing326150 | 20-99 | ◐ LIKELY ACTIVE |
| LNLegacy New Castle | New Castle | IN | Food Manufacturing311119 | 20-99 | ◐ LIKELY ACTIVE |
| LALinde Advanced Material Technology (Thermal Spray) | New Castle | PA | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| LLLineage Logistics MTC, LLC | New Castle | DE | — | — | ◐ LIKELY ACTIVE |
| MWMom's Wholesale Foods, Inc. | New Castle | PA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| NHNCSP Holdco, LLC | New Castle | IN | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| NCNew Castle Pa Ewp 707 | New Castle | PA | Wood Product Manufacturing321214 | 1-19 | ◐ LIKELY ACTIVE |
| NCNew Castle Plant | New Castle | PA | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| NHNew Hudson Facades - DE | New Castle | DE | Fabricated Metal Product Manufacturing332323 | 1-19 | ◐ LIKELY ACTIVE |
| PFPrecision Feedscrews, Inc. | New Castle | PA | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| RIRocca's Italian Foods | New Castle | PA | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| SASatys Aftermarket Delaware LLC | New Castle | DE | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| SGSivad Group LLC | New Castle | DE | Machinery Manufacturing333413 | — | ▲ REPORTED CLOSED |
| SBSmith - Berry Vineyard & Winery, INC | New Castle | KY | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
Superior Forge & Steel New Castle | New Castle | PA | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| VWVentisei Winery | New Castle | PA | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| DRDevido Ranier Stone CO | New Castle | PA | Nonmetallic Mineral Product Manufacturing327991 | — | ◐ LIKELY ACTIVE |
| ACAam Castings New Castle | New Castle | IN | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |