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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
Signicast LLCHartfordWI500+ ACTIVE
Silver City AluminumTauntonMA20–99 ACTIVE
Sioux City Foundry CompanySioux CityIA— ACTIVE
Sipi Metals CORPChicagoIL100–499 ACTIVE
Smith Ironworks INCLyerlyGA— ACTIVE
Solidiform, INCFort WorthTX20–99 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
Spectro Alloys CORPRosemountMN100–499 ACTIVE
Spi Mobile Pulley Works, LLCMobileAL20–99 ACTIVE
Spuncast INCWatertownWI100–499 ACTIVE
Ssab Alabama INCAxisAL— ACTIVE
Ssab Enterprises LLCMobileAL100–499 ACTIVE
Ssab Iowa INCMuscatineIA100–499 ACTIVE
StadcoLos AngelesCA20–99 ACTIVE
Stahl Specialty Co-warrensburg PlantWarrensburgMO20–99 ACTIVE
Stainless Foundry & Engineering INCMilwaukeeWI100–499 ACTIVE
Standard Steel-burnham PlantBurnhamPA500+ ACTIVE
Star Manufacturing INCLexingtonKY100–499 ACTIVE
State Metal Industries INCCamdenNJ20–99 ACTIVE
Steel Dust Recycling LLCMillportAL100–499 ACTIVE
Steel Dynamics HeartlandTerre HauteIN100–499 ACTIVE
Steel Edge, INCLas VegasNV— ACTIVE
Steel Forgings, INC.ShreveportLA20–99 ACTIVE
Steelscape INCKalamaWA100–499 ACTIVE
Steeltech, LLCGrand RapidsMI20–99 ACTIVE
Stephens Pipe & Steel LLCRussell SpringsKY100–499 ACTIVE
Sterling Metal Works LLCSterling HeightsMI— ACTIVE
Steward Advanced Materials LLCChattanoogaTN20–99 ACTIVE
St Paul Brass Foundry COSaint PaulMN1–19 ACTIVE
St Products LLCDuncansvillePA100–499 ACTIVE
St. Regis Culvert, INCCharlotteMI1–19 ACTIVE
Strohecker INCEast PalestineOH20–99 ACTIVE
Stupp Bridge CompanyBowling GreenKY100–499 ACTIVE
Stupp Bros., INC.Saint LouisMO20–99 ACTIVE
Sulzer Metco (us) TroyTroyMI20–99 ACTIVE
Sunshine Minting INCHendersonNV100–499 ACTIVE
Supercon, IncorporatedShrewsburyMA20–99 ACTIVE
Superior Brass & Aluminum Casting COEast LansingMI20–99 ACTIVE
Superior Extrusion, INCGwinnMI100–499 ACTIVE
Superior Forge & Steel CORPLimaOH— ACTIVE
Superior Tube Company, INC.CollegevillePA100–499 ACTIVE
Sycast, INC.HartfordCT1–19 ACTIVE
Tampa Brass and Aluminum Corporation.TampaFL100–499 ACTIVE
Taubensee Steel and Wire COWheelingIL100–499 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.