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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
56560 - International Crankshaft INC.GeorgetownKY100–499 ACTIVE
6k Additive, INC.BurgettstownPA20–99 ACTIVE
80/20, LLCColumbia CityIN100–499 ACTIVE
A-1 Roll COMount ClemensMI1–19 ACTIVE
Aat Omega, LLCKeystone HeightsFL20–99 ACTIVE
Abbott Ball Company theWest HartfordCT20–99 ACTIVE
A&b Foundry, LLCDallasTX— ACTIVE
Above All Cnc, INC.GoletaCA— ACTIVE
Accu-fab and Construction, INCMoss PointMS20–99 ACTIVE
Accurate Castings INCLa PorteIN20–99 ACTIVE
Accurate Forming, LLCHamburgNJ20–99 ACTIVE
Aci Alloys, INCSan JoseCA— ACTIVE
Acme Alliance LLCNorthbrookIL100–499 ACTIVE
Acme Foundry INCCoffeyvilleKS100–499 ACTIVE
Adams & Westlake LTDElkhartIN20–99 ACTIVE
A & D Precision Manufacturing, INC.AnaheimCA1–19 ACTIVE
Advance Bronze INCLodiOH— ACTIVE
Advanced Structural Technologies, INC.OxnardCA100–499 ACTIVE
Aero Metals INCLa PorteIN100–499 ACTIVE
A. Finkl & Sons CO.ChicagoIL100–499 ACTIVE
Alcumet INCLondonderryNH20–99 ACTIVE
Alexandria Extrusion CompanyAlexandriaMN— ACTIVE
Alleima Special Metals LLCKennewickWA— ACTIVE
Alliance Tubular Products LLC - Alliance Plant (1576010407)AllianceOH100–499 ACTIVE
Allied Locke Industries INCDixonIL100–499 ACTIVE
Allied Tube & Conduit CorporationHarveyIL— ACTIVE
Allison Transmission, INC. Dba Walker Die CastingLewisburgTN100–499 ACTIVE
Alloy Die Casting CO.Buena ParkCA— ACTIVE
Alloy Holdings, LLCProvidenceRI100–499 ACTIVE
Alpha Assembly Solutions, INC.AltoonaPA100–499 ACTIVE
Alpha Foundry COWright CityMO20–99 ACTIVE
Alsco Aluminum Corporation (alsco Aluminum, Corp.)San JuanPR20–99 ACTIVE
Alton Steel INCAltonIL100–499 ACTIVE
Alu-bra Foundry, INC.BensenvilleIL20–99 ACTIVE
Aluminum Blanking Co., INC.PontiacMI20–99 ACTIVE
Aluminum Die Casting Company, INC.Jurupa ValleyCA20–99 ACTIVE
A & M Engineering, INC.IrwindaleCA20–99 ACTIVE
American Boa INCCummingGA— ACTIVE
American Cable CompanyPhiladelphiaPA100–499 ACTIVE
American Carbonyl, LLCRedstone ArsenalAL1–19 ACTIVE
American CastingPryorOK100–499 ACTIVE
American Cast Iron Pipe CompanyBirminghamAL500+ ACTIVE
American Foam CastSylacaugaAL20–99 ACTIVE
American Posts LLCToledoOH20–99 ACTIVE
American Structural Metals INCSomersetWI20–99 ACTIVE
Amerway INCAltoonaPA20–99 ACTIVE
Ames Advanced MaterialsSouth PlainfieldNJ100–499 ACTIVE
Ames Copper GroupShelbyNC20–99 ACTIVE
Amg Vanadium LLCCambridgeOH— ACTIVE
Ampal INC.PalmertonPA20–99 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.