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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
Halliday Products, INC.OrlandoFL— ACTIVE
Haynes International, INCArcadiaLA100–499 ACTIVE
Haynes International, INC.KokomoIN500+ ACTIVE
Hcmp, INC.HaydenID20–99 ACTIVE
H Cross CompanyMoonachieNJ20–99 ACTIVE
H.c. Starck Solutions Coldwater LLCColdwaterMI— ACTIVE
Heidtman Steel ProductsButlerIN100–499 ACTIVE
Heidtman Steel Products INCGranite CityIL20–99 ACTIVE
Hensley Industries, INC.DallasTX100–499 ACTIVE
Heraeus Precious Metals North America LLCSanta Fe SpringsCA100–499 ACTIVE
Heraeus Precious Metals North America, LLCWartburgTN1–19 ACTIVE
Heritage Die Casting Company, INC.DenverCO1–19 ACTIVE
Heyco Metals INCReadingPA20–99 ACTIVE
H & H Sheet Metal FabricatorsRussellvilleKY100–499 ACTIVE
High Plains Steel Services, LLCWindsorCO20–99 ACTIVE
H. Kramer & COChicagoIL100–499 ACTIVE
Hme INCTopekaKS100–499 ACTIVE
Hoeganaes CORPWatsontownPA20–99 ACTIVE
Honeywell Electronic MaterialsFombellPA20–99 ACTIVE
Howard Engineering CONaugatuckCT1–19 ACTIVE
Howmet Castings & Services, INC.HamptonVA— ACTIVE
Howmet CORP - Dover AlloyDoverNJ500+ ACTIVE
Hughes Bros., Aircrafters, INC.South GateCA— ACTIVE
Huntington Alloys CorporationHuntingtonWV500+ ACTIVE
Huron Casting INCPigeonMI100–499 ACTIVE
Hyatt Die Cast and Engineering Corporation - SouthCypressCA100–499 ACTIVE
Hybar LLCOsceolaAR100–499 ACTIVE
Hydro Aluminum Metals USA LLCHendersonKY20–99 ACTIVE
Hydro Extrusion Portland, INC.PortlandOR20–99 ACTIVE
Hydro Extrusion USA LLC - Cressona FacilityCressonaPA— ACTIVE
Hygrade Metal Moulding Manufacturing CORP.BethlehemPA— ACTIVE
Idaho Laboratories CORPIdaho FallsID20–99 ACTIVE
Id Castings of Illinois LLCMartinsvilleIL20–99 ACTIVE
Indiana Pickling & Processing CompanyPortageIN20–99 ACTIVE
Indium Corporation of America, theElk Grove VillageIL— ACTIVE
Indium Corporation of America, theClintonNY— ACTIVE
Industrial Alloys INCIndian TrailNC20–99 ACTIVE
Innovative Works INC.ChesterfieldMI20–99 ACTIVE
Integra-cast, LLC.New BritainCT1–19 ACTIVE
Interamerica Stage, INC.SanfordFL100–499 ACTIVE
Interconnect Solutions CO LLCFountain ValleyCA100–499 ACTIVE
Intramicron, INCAuburnAL1–19 ACTIVE
Invest Cast IncorporatedColumbia HeightsMN100–499 ACTIVE
Iowa Steel Treating, INC.BettendorfIA1–19 ACTIVE
Jamestown North America, LLCHoustonTX20–99 ACTIVE
Jd Machine CORPOgdenUT100–499 ACTIVE
Jersey Shore Steel COJersey ShorePA100–499 ACTIVE
J. H. Botts, LLCJolietIL20–99 ACTIVE
J. K. Pulley Company, INC.Saint LouisMO20–99 ACTIVE
Johnson Brass & Machine Foundry INCSaukvilleWI20–99 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.