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Primary Metal Manufacturing

8,881 FACILITIESAll Census product lines →

NAICS 331

The Primary Metal Manufacturing industry, as defined by NAICS 331, is measured by the Bureau of Labor Statistics to have 6096 establishments in the United States as of 2025. This register lists 8881 facilities across the country. Cleveland-Cliffs Burns Harbor LLC, located in Burns Harbor, employed 4003 people in 2025.

SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE

Map, cities and product lines
Map of United States manufacturing facilities

Product lines reported here

These are counts by industry: the Economic Census records what establishments in primary metal manufacturing reported producing, and never names a plant.

Plants in this industry6,017 FACILITIES

Listing 6,017 of 8,881: the facilities with a website, a size band or two sources on record. The rest are in site search.

FacilityCityStateEmployeesStatus
Ulbrich Stainless Steels & Special Metals, INC.North HavenCT500+ ACTIVE
Ultraviolet Devices IncorporatedValenciaCA20–99 ACTIVE
Umicore Optical Materials USA INC.QuapawOK20–99 ACTIVE
Unarco Material Handling, LLCSpringfieldTN100–499 ACTIVE
Uni-cast, LLCLondonderryNH100–499 ACTIVE
United Aluminum CORPNorth HavenCT100–499 ACTIVE
United Metal Fabricators, INC.JohnstownPA20–99 ACTIVE
United Rolls INCCantonOH100–499 ACTIVE
United States Steel CorporationPittsburghPA— ACTIVE
United Steel IncEast HartfordCT100–499 ACTIVE
Univertical LLCAngolaIN20–99 ACTIVE
Unlimited Services of Wisconsin, LLCOcontoWI100–499 ACTIVE
Urschel Laboratories, INC.ChestertonIN500+ ACTIVE
Usac Wa LLCEntiatWA20–99 ACTIVE
U.s. Bronze Foundry & Machine, INCMeadvillePA20–99 ACTIVE
Valimet INCStocktonCA— ACTIVE
Valley Metals, LLCPowayCA20–99 ACTIVE
Vallourec StarHoustonTX100–499 ACTIVE
Veridiam, INC.El CajonCA100–499 ACTIVE
Virginia Steel & Fabrication, INCBastianVA1–19 ACTIVE
Vista MetalsAdairsvilleGA100–499 ACTIVE
Vitta CORPBethelCT1–19 ACTIVE
Voeller MixersPort WashingtonWI20–99 ACTIVE
V&s Amboy Galvanizing LLCPerth AmboyNJ20–99 ACTIVE
Vulcan INCFoleyAL100–499 ACTIVE
Vulcraft of New York INCChemungNY100–499 ACTIVE
Waelz Sustainable Products LLCLogansportIN100–499 ACTIVE
Washburn Iron Works INCWashburnWI20–99 ACTIVE
Waupaca Foundry INC - Plant 2 & 3WaupacaWI500+ ACTIVE
Wdc Acquisition LLCCrestonIA100–499 ACTIVE
Webco Ind Inc/oil City Tube DivOil CityPA100–499 ACTIVE
Webco Industries Texas Distribution DivisionOrangeTX20–99 ACTIVE
Weld Craft Manufacturing, INC.BentonAR1–19 ACTIVE
Welspun Tubular LLCLittle RockAR500+ ACTIVE
Western Bronze INCWest SpringfieldMA1–19 ACTIVE
Wheatland Tube Company - CouncilWheatlandPA100–499 ACTIVE
Whitehead Die Casting INCGainesvilleGA20–99 ACTIVE
Williams Advanced Materials INCBuffaloNY— ACTIVE
Winnebago Foundry INCSouth BeloitIL20–99 ACTIVE
Winsert, LLCMarinetteWI100–499 ACTIVE
Wirco INCChampaignIL20–99 ACTIVE
Wire and Cable Specialties, INC.CoatesvillePA— ACTIVE
Wirerope Works, INC.WilliamsportPA100–499 ACTIVE
Wisconsin Aluminum Foundry Company, INC.ManitowocWI500+ ACTIVE
Wl Gore & Associates INCNewarkDE— ACTIVE
Wollaston Alloys, INC.BraintreeMA— ACTIVE
Wolverine Bronze CORosevilleMI20–99 ACTIVE
Wooster Products INCWoosterOH20–99 ACTIVE
Worthington SteelPorterIN100–499 ACTIVE
Worthington Steel Rome LLC (former Rome Strip Steel)RomeNY100–499 ACTIVE

Search all 8,881 facilities

Common questions

How many primary metal manufacturing facilities are in the United States?

As of NOV 2026, FactoryRegistry lists 8,881 primary metal manufacturing facilities (NAICS 331) across 53 states, compiled from EPA, OSHA and Census records.

Which state has the most primary metal manufacturing facilities?

California, with 901 facilities listed.

How many primary metal manufacturing facilities are still operating?

4,741 of the 8,881 listed carry a recent operating signal in federal data — the register's Active or Likely active status. The rest are listed from their filings alone, which is a gap in the federal record rather than evidence that a plant has closed.