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Primary Metal Manufacturing

8,651 FACILITIESAll Census product lines →

NAICS 331

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 industry8,651 FACILITIES

FacilityCityStateEmployeesStatus
6k Additive, INC.BurgettstownPA20–99 ACTIVE
Aat Omega, LLCKeystone HeightsFL20–99 ACTIVE
Abbott Ball Company theWest HartfordCT20–99 ACTIVE
Accurate Castings INCLa PorteIN20–99 ACTIVE
Accurate Forming, LLCHamburgNJ20–99 ACTIVE
Acme Alliance LLCNorthbrookIL100–499 ACTIVE
Acme Foundry INCCoffeyvilleKS100–499 ACTIVE
A & D Precision Manufacturing, INC.AnaheimCA— ACTIVE
Advanced Structural Technologies, INC.OxnardCA100–499 ACTIVE
Akron Brass COWoosterOH1–19 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 Tube & Conduit CorporationHarveyIL— ACTIVE
Allison Transmission, INC. Dba Walker Die CastingLewisburgTN100–499 ACTIVE
Alton Steel INCAltonIL100–499 ACTIVE
Alu-bra Foundry, INC.BensenvilleIL20–99 ACTIVE
Aluminum Blanking Co., INC.PontiacMI20–99 ACTIVE
A & M Engineering, INC.IrwindaleCA20–99 ACTIVE
American Cable CompanyPhiladelphiaPA100–499 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
Ames Advanced MaterialsSouth PlainfieldNJ100–499 ACTIVE
Ames Copper GroupShelbyNC20–99 ACTIVE
Amg Vanadium LLCCambridgeOH— ACTIVE
Amsted RailKansas CityKS100–499 ACTIVE
Anderson Steel Supply INCGreat FallsMT20–99 ACTIVE
Arcelormittal Tubular Products USA LLC (0370020133)ShelbyOH500+ ACTIVE
Arconic Davenport LLCRiverdaleIA500+ ACTIVE
Ardagh Metal Packaging USA CORPOlive BranchMS100–499 ACTIVE
Aristo-cast, INC.AlmontMI20–99 ACTIVE
Ark Technologies, INC.Saint CharlesIL20–99 ACTIVE
Armstrong Mold CorporationEast SyracuseNY20–99 ACTIVE
Asama Coldwater Manufacturing, INC.ColdwaterMI100–499 ACTIVE
Asc Engineered Solutions Llc/columbia Fka AnvilColumbiaPA500+ ACTIVE
Ashland Foundry & Machine Works, LLCAshlandPA100–499 ACTIVE
Ashley Machine & Tool COWyomingPA20–99 ACTIVE
Atlantic Casting & Engineering CORPCliftonNJ100–499 ACTIVE
A. T. Wall COWarwickRI20–99 ACTIVE
Audubon Metals LLCHendersonKY100–499 ACTIVE
Auris Noble LLCAkronOH— ACTIVE
Aurora Metals Division LLCMontgomeryIL20–99 ACTIVE
Barron Industries INCOxfordMI20–99 ACTIVE
Basf Metals LLCSenecaSC100–499 ACTIVE
Bay Shore Steel Works LLCCharlevoixMI20–99 ACTIVE
Bci Solutions, INCBremenIN100–499 ACTIVE

Search all 8,651 facilities

Common questions

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

As of AUG 2026, FactoryRegistry lists 8,651 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 877 facilities listed.

How many primary metal manufacturing facilities are still operating?

3,820 of the 8,651 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.