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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
Kennametal, INC - HuntsvilleHuntsvilleAL100–499 ACTIVE
Kenwalt Die Casting CORP.Sun ValleyCA20–99 ACTIVE
Kortick ManufacturingPittsburgCA20–99 ACTIVE
Krengel Equipment LLCEastlakeOH20–99 ACTIVE
Lacy Foundries LLCBaltimoreMD1–19 ACTIVE
Lancaster Alloys Company, INC.LancasterCA1–19 ACTIVE
L&n IndustriesRushvilleIL1–19 ACTIVE
Lodi Iron Works, INC.LodiCA— ACTIVE
Lovejoy, LLCSouth HavenMI— ACTIVE
Lucas-milhaupt, INC.CudahyWI100–499 ACTIVE
Luxfer Magtech INCSaxonburgPA— ACTIVE
Marlin Steel Wire Products LLCBaltimoreMD— ACTIVE
Materion Brush INCMayfield HeightsOH— ACTIVE
Materion Newton INCNewtonMA100–499 ACTIVE
Metal Fabrication and Art LLCLos AngelesCA1–19 ACTIVE
Metalor Technologies USA CorporationNorth AttleboroMA— ACTIVE
Metalwerks, INC.AliquippaPA— ACTIVE
Michigan Metals & Manufacturing INCSouthfieldMI1–19 ACTIVE
Microcast Technologies CORPLindenNJ— ACTIVE
Midwest Aerospace Casting, LLCMerrillvilleIN— ACTIVE
Moody Construction Services, Inc.DuetteFL20–99 ACTIVE
Mountain Ridge Metals INCMillersburgPA100–499 ACTIVE
Mti Partners, LLCAlbanyOR20–99 ACTIVE
National Chimney Supply-vermont, INC.South BurlingtonVT— ACTIVE
National Fence Systems INC.AvenelNJ— ACTIVE
Nemak AlabamaSylacaugaAL500+ ACTIVE
New England Castings, LLCStandishME20–99 ACTIVE
New England Trading Global INCPembrokeMA1–19 ACTIVE
New Source CorporationOrlandoFL— ACTIVE
Non-ferrous Casting CompanyDaytonOH1–19 ACTIVE
Norican Group North American, INC.LagrangeGA100–499 ACTIVE
Northern States Metals LLCYoungstownOH20–99 ACTIVE
Nucor Steel - LexingtonLexingtonNC100–499 ACTIVE
Nucor Steel West Virginia LLCApple GroveWV100–499 ACTIVE
Nugreen Metals LLCSan AntonioTX— ACTIVE
Nwpx Infrastructure, INC.VancouverWA500+ ACTIVE
Oerlikon Metco US INCWestburyNY— ACTIVE
Oertel Metal Works, INC.DavenportIA20–99 ACTIVE
Opta WalkertonWalkertonIN20–99 ACTIVE
Orrvilon, INCOrrvilleOH100–499 ACTIVE
Pace Industries LLCNoviMI— ACTIVE
Pac Foundries, INC.Port HuenemeCA— ACTIVE
Pacific Corrugated Pipe Company LLCFontanaCA— ACTIVE
Pac - Rancho, INC.Rancho CucamongaCA— ACTIVE
Phelps Dodge Refining CorporationEl PasoTX100–499 ACTIVE
Pier Tech LLCChesterfieldMO1–19 ACTIVE
Pompanette, LLCCharlestownNH— ACTIVE
Portsmouth Lumber CorporationPortsmouthVA— ACTIVE
Precision M/c Manufacturing, INC.WylieTX1–19 ACTIVE
Primetals Technologies USA LLCAlpharettaGA— 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.