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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
Johnson Manufacturing Company, INCPrincetonIA20–99 ACTIVE
Johnson Matthey INC.West ChesterPA100–499 ACTIVE
Jordan Aluminum Company, LLCMemphisTN100–499 ACTIVE
Judd Wire INC.Turners FallsMA100–499 ACTIVE
Jupiter Aluminum CORPHammondIN100–499 ACTIVE
Jw Aluminum CompanyGoose CreekSC100–499 ACTIVE
Kaba Ilco CorporationRocky MountNC100–499 ACTIVE
Kaiser Aluminum Alexco LLCChandlerAZ100–499 ACTIVE
Kaiser Aluminum Fabricated Products LLCChandlerAZ— ACTIVE
Kaiser Aluminum Fabricated Products, LLCFlorenceAL20–99 ACTIVE
Kamtek INCBirminghamAL500+ ACTIVE
Kanthal CorporationBethelCT20–99 ACTIVE
Kapp Alloy & Wire, INCOil CityPA1–19 ACTIVE
Karan and Associates, INCFontanaCA1–19 ACTIVE
Kawneer CO INCBloomsburgPA100–499 ACTIVE
Kennametal INCLa VergneTN100–499 ACTIVE
Kennedy Valve Div Mc Wane INCElmiraNY100–499 ACTIVE
Kentucky Smelting Technology INCParisKY— ACTIVE
Keymark CORP of FloridaLakelandFL100–499 ACTIVE
K & H Precision Products, INC.Honeoye FallsNY— ACTIVE
Kimura Foundry America, INCShelbyvilleIN20–99 ACTIVE
Kingsbury Castings DivisionKingsburyIN20–99 ACTIVE
Kirsh Foundry INCBeaver DamWI20–99 ACTIVE
Kittyhawk INCGarden GroveCA20–99 ACTIVE
Knoxville Sheet Metal Works, INCKnoxvilleTN20–99 ACTIVE
Kobelco Aluminum Products & Extrusions INCBowling GreenKY100–499 ACTIVE
Korff Holdings, LLCSalemOH20–99 ACTIVE
Kovatch Castings, INCUniontownOH100–499 ACTIVE
Kreisler Industrial CorporationElmwood ParkNJ100–499 ACTIVE
Kuprion, INC.San JoseCA20–99 ACTIVE
Kutztown Foundry & Machine LLCKutztownPA20–99 ACTIVE
Kvf-quad, CorporationEast MolineIL20–99 ACTIVE
Kyocera Senco Industrial Tools, INCCincinnatiOH100–499 ACTIVE
Langeloth Metallurgical Company LLCLangelothPA20–99 ACTIVE
Latrobe Specialty Metals Co, LLCLatrobePA— ACTIVE
Leachgarner, INC.AttleboroMA100–499 ACTIVE
L E Jones COMenomineeMI100–499 ACTIVE
Leroy Tool & Die INCLeroyMI20–99 ACTIVE
Le Sueur, IncorporatedLe SueurMN100–499 ACTIVE
Libertas CopperLeetsdalePA100–499 ACTIVE
Linear Motion LLCSaginawMI100–499 ACTIVE
Lite Magnesium Products INCRavennaOH20–99 ACTIVE
Littlestown Hdwr & FoundryLittlestownPA20–99 ACTIVE
Lodge Manufacturing CompanySouth PittsburgTN500+ ACTIVE
Logan Aluminum INCRussellvilleKY500+ ACTIVE
Luvata Appleton LLCKimberlyWI— ACTIVE
Luvata Waterbury, INC.WaterburyCT100–499 ACTIVE
Madden Bolt CorporationHoustonTX20–99 ACTIVE
Magellan Aerospace GlendaleGlendaleAZ100–499 ACTIVE
Magotteaux, INC.FranklinTN100–499 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.