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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
Norsk Titanium US INCPlattsburghNY20–99 ACTIVE
North American Hoganas CompanyHollsopplePA100–499 ACTIVE
North American StainlessGhentKY500+ ACTIVE
Northern Stainless CORPPewaukeeWI— ACTIVE
Northfield Manufacturing, INCWestlandMI20–99 ACTIVE
North Jackson Specialty Steel LLCNorth JacksonOH— ACTIVE
Northlake Steel CORPValley CityOH20–99 ACTIVE
North Star Bluescope Steel LLCDeltaOH500+ ACTIVE
Novamet Specialty Products CorporationLebanonTN20–99 ACTIVE
Nuclead Manufacturing, Co., INC.West BridgewaterMA1–19 ACTIVE
Nuclear Lead Co, INC.Oak RidgeTN1–19 ACTIVE
Nucor CorporationNorfolkNE— ACTIVE
Nucor SteelCrawfordsvilleIN500+ ACTIVE
Nucor Steel- BerkeleyHugerSC500+ ACTIVE
Nucor Steel BrandenburgBrandenburgKY500+ ACTIVE
Nucor Steel DecaturTrinityAL500+ ACTIVE
Nucor Steel Florida, INC.FrostproofFL100–499 ACTIVE
Nucor Steel Kankakee INCBourbonnaisIL100–499 ACTIVE
Nucor Steel Kingman LLCKingmanAZ100–499 ACTIVE
Nucor Steel Memphis, INCMemphisTN500+ ACTIVE
Nucor Steel Tuscaloosa, INC.TuscaloosaAL100–499 ACTIVE
O'fallon Casting, L.l.c.O FallonMO100–499 ACTIVE
Ohio Coatings CO.YorkvilleOH20–99 ACTIVE
Ohio Star Forge CO.ChampionOH100–499 ACTIVE
Oil City Iron Works, INCCorsicanaTX100–499 ACTIVE
Oliver & Dahlman Equipment Co., INC.ElktonFL1–19 ACTIVE
Olympic Industries, LLCCordovaTN20–99 ACTIVE
Omega Castings, INCBattle CreekMI1–19 ACTIVE
Optical Cable CORPRoanokeVA100–499 ACTIVE
Oregon Steel Mills LLCPortlandOR— ACTIVE
Pace Industries - Cambridge DivNorth BillericaMA100–499 ACTIVE
Padgett INCNew AlbanyIN100–499 ACTIVE
Parmatech CorporationPetalumaCA20–99 ACTIVE
Parrish Enterprises, LTD.EnidOK— ACTIVE
Pcc Airfoils LLC Smp INCWickliffeOH100–499 ACTIVE
Pcc Airfoils MentorMentorOH100–499 ACTIVE
Pcc Rollmet, INCIrvineCA— ACTIVE
Pcc Structurals, INC.PortlandOR— ACTIVE
Pcc Structurals - San LeandroSan LeandroCA100–499 ACTIVE
Pelican Wire CONaplesFL20–99 ACTIVE
Pennex Aluminum COWellsvillePA100–499 ACTIVE
Perryman COHoustonPA500+ ACTIVE
Petersen IncorporatedOgdenUT100–499 ACTIVE
Phelps Dodge High Performance ConductorsInmanSC100–499 ACTIVE
P Kay Metal INCLos AngelesCA— ACTIVE
P Kay Metal LLC - Lewiston FacilityLewistonID20–99 ACTIVE
Plymouth Tube CompanyEast TroyWI20–99 ACTIVE
Plymouth Tube CompanySalisburyMD20–99 ACTIVE
Pmx Industries, INC.Cedar RapidsIA100–499 ACTIVE
Prairie View Industries, INC.FairburyNE20–99 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.