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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
Lucas-milhaupt, INC.CudahyWI100–499 ACTIVE
Luvata Appleton LLCKimberlyWI— ACTIVE
Luxfer Gas CylindersRiversideCA100–499 ACTIVE
Luxfer Magtech INCSaxonburgPA— ACTIVE
Madison Electric CompanyFraserMI— ACTIVE
Markin TubingWyomingNY20–99 ACTIVE
Materion Newton INCNewtonMA100–499 ACTIVE
Mdc Precision LLCHaywardCA— ACTIVE
Med-pac INCLake ParkMN— ACTIVE
Metallus INC.CantonOH500+ ACTIVE
Metalor Technologies USA CorporationNorth AttleboroMA— ACTIVE
Metalwerks, INC.AliquippaPA— ACTIVE
Metro Steel & Pipe Supply, INC.TavaresFL20–99 ACTIVE
Microcast Technologies CORPLindenNJ— ACTIVE
Mid-south Wire CompanyNashvilleTN100–499 ACTIVE
Midwest Aerospace Casting, LLCMerrillvilleIN— ACTIVE
Midwest Bale Ties INCCrawfordsvilleIN— ACTIVE
Milwaukee Precision Casting INCMilwaukeeWI— ACTIVE
Minova USA INCGeorgetownKY— ACTIVE
Morel Industries, INCArlingtonWA— ACTIVE
Mountain Ridge Metals INCMillersburgPA100–499 ACTIVE
Multimetco INCAnnistonAL20–99 ACTIVE
National Chimney Supply-vermont, INC.South BurlingtonVT— ACTIVE
National Fence Systems INC.AvenelNJ— ACTIVE
Nebraska Aluminum Castings INCHastingsNE20–99 ACTIVE
Nemak AlabamaSylacaugaAL500+ ACTIVE
Neuman Aluminium Impact Extrusion, INC.WaynesboroVA— ACTIVE
Noble Metals Services, INC.CranstonRI— ACTIVE
Norican Group North American, INC.LagrangeGA100–499 ACTIVE
North American Hoganas CompanyHollsopplePA— ACTIVE
Northern Stainless CORPPewaukeeWI— ACTIVE
Northfield Manufacturing, INCWestlandMI20–99 ACTIVE
North Jackson Specialty Steel LLCNorth JacksonOH— ACTIVE
Nuclead Manufacturing, Co., INC.West BridgewaterMA— ACTIVE
Nucor Steel BrandenburgBrandenburgKY500+ ACTIVE
Nucor Steel - LexingtonLexingtonNC100–499 ACTIVE
Nucor Steel Tuscaloosa, INC.TuscaloosaAL100–499 ACTIVE
Nugreen Metals LLCSan AntonioTX— ACTIVE
Oertel Metal Works, INC.DavenportIA20–99 ACTIVE
Ohio Coatings CO.YorkvilleOH20–99 ACTIVE
Oliver & Dahlman Equipment Co., INC.ElktonFL— ACTIVE
Opta WalkertonWalkertonIN20–99 ACTIVE
Orrvilon, INCOrrvilleOH100–499 ACTIVE
Pac Foundries, INC.Port HuenemeCA— ACTIVE
Pacific Corrugated Pipe Company LLCFontanaCA— ACTIVE
Pac - Rancho, INC.Rancho CucamongaCA— ACTIVE
Pbm Supply & Mfg. INC.ChicoCA— ACTIVE
Pcc Rollmet, INCIrvineCA— ACTIVE
Perryman COHoustonPA— ACTIVE
Phb INCFairviewPA— 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.