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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
Pelican Wire CONaplesFL20–99 ACTIVE
Pennex Aluminum COWellsvillePA100–499 ACTIVE
Petersen IncorporatedOgdenUT100–499 ACTIVE
Phelps Dodge Copper Products COEl PasoTX100–499 ACTIVE
Phelps Dodge High Performance ConductorsInmanSC100–499 ACTIVE
P Kay Metal LLC - Lewiston FacilityLewistonID20–99 ACTIVE
Plymouth Tube CompanySalisburyMD20–99 ACTIVE
Precision Components & Assemblies, INCSaint PetersMO1–19 ACTIVE
Prysmian Cables & Systems USA LLCDu QuoinIL100–499 ACTIVE
Prysmian Cables & Sys USA Llc/williamsport PltWilliamsportPA100–499 ACTIVE
Purity Zinc Metals, LLCClarksvilleTN20–99 ACTIVE
Pyromet LLCAstonPA20–99 ACTIVE
Quality Machine of Iowa Acquisition, INC.AudubonIA20–99 ACTIVE
Radcliff Wire INCBristolCT20–99 ACTIVE
Ramco Electric Motors, INC.GreenvilleOH100–499 ACTIVE
Rathbone Precision Metals, INCPalmerMA20–99 ACTIVE
Real Alloy Recycling LLCMorgantownKY100–499 ACTIVE
Rea Magnet Wire Company INCLafayetteIN100–499 ACTIVE
Regent Die & Tool Co, INCMilwaukeeWI20–99 ACTIVE
ResoneticsNew HartfordNY20–99 ACTIVE
Riverdale Mills CORPNorthbridgeMA20–99 ACTIVE
Roscoe Moss Manufacturing COLos AngelesCA100–499 ACTIVE
Rubadue Wire CO INCLovelandCO20–99 ACTIVE
Sanders Lead CompanyTroyAL500+ ACTIVE
Sawbrook Steel Casting LLCCincinnatiOH— ACTIVE
Sea Shield Marine Products, INC.WalnutCA— ACTIVE
Selmet, INC.AlbanyOR500+ ACTIVE
Senior Aerospace SspBurbankCA500+ ACTIVE
Shalmet CORPOrwigsburgPA100–499 ACTIVE
Shelmet Precision Casting CO. INC.Wild RoseWI20–99 ACTIVE
Shultz Steel LLCSouth GateCA100–499 ACTIVE
Signicast LLCHartfordWI500+ ACTIVE
Sioux City Foundry CompanySioux CityIA— ACTIVE
Sipi Metals CORPChicagoIL100–499 ACTIVE
Solventum Purification INC.MeridenCT100–499 ACTIVE
Southern Cast Products INCMeridianMS20–99 ACTIVE
Southern Tool LLCOxfordAL100–499 ACTIVE
Southwest Fabrication LLCPhoenixAZ20–99 ACTIVE
Southwest Steel Casting Company, LLCLongviewTX20–99 ACTIVE
Southwire Company, LLCCarrolltonGA— ACTIVE
Spartan Light Metal Products, INC.SpartaIL100–499 ACTIVE
Special Metals Welding Products CompanyNewtonNC20–99 ACTIVE
Spectro Alloys CORPRosemountMN100–499 ACTIVE
Spi Mobile Pulley Works, LLCMobileAL20–99 ACTIVE
Ssab Iowa INCMuscatineIA100–499 ACTIVE
Stahl Specialty Co-warrensburg PlantWarrensburgMO20–99 ACTIVE
Standard Steel-burnham PlantBurnhamPA500+ ACTIVE
State Metal Industries INCCamdenNJ20–99 ACTIVE
Steel Dust Recycling LLCMillportAL100–499 ACTIVE
Steel Dynamics HeartlandTerre HauteIN100–499 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.