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Primary Metal Manufacturing in Illinois

NAICS 331 · IL

This register lists 550 facilities in Illinois. The Bureau of Labor Statistics counted 336 establishments in the Primary Metal Manufacturing industry in Illinois in 2025. Mapleton Foundry in Mapleton employed 1,186 people in 2025.

SUMMARIZED FROM THE FEDERAL FIGURES ON THIS PAGE

Map, cities and product lines

Biggest counties

Cook200DuPage30Madison27Kane26Winnebago25Lake20McHenry18DeKalb15

Biggest cities

Plants in Illinois384 FACILITIES

Listing 384 of 550: the facilities with a website, a size band or two sources on record. The rest are in site search.

FacilityCityEmployeesStatus
Coleman Cable INCWaukegan— UNVERIFIED
Alcast- PeoriaPeoria100–499 LIKELY ACTIVE
Century Aluminum COChicago— LIKELY ACTIVE
Hydro Extrusion USA LLCRosemont500+ LIKELY ACTIVE
Keystone Consolidated Industries, Inc., d/b/a Liberty Steel & Wire-PeoriaPeoria500+ LIKELY ACTIVE
Plymouth Tube Company - WarrenvilleWarrenville20–99 LIKELY ACTIVE
Cosmos Manufacturing, INC.South Chicago Heights100–499 LIKELY ACTIVE
Granite City SteelGranite City1–19 LIKELY ACTIVE
K. N. M. Industries, INC.Harwood Heights20–99 LIKELY ACTIVE
Krueger Steel & Wire, INC.Elmhurst— LIKELY ACTIVE
Leitelt Brothers Foundry, INCChicago1–19 LIKELY ACTIVE
Sterling Steel CO LLCSterling— LIKELY ACTIVE
Branchfield CastingGalva20–99 UNVERIFIED
Castwell Products INCSkokie— UNVERIFIED
Century Brass Works INCSwansea1–19 UNVERIFIED
Conex Cable LLCDekalb20–99 UNVERIFIED
Illini Wire Works INCOlney20–99 UNVERIFIED
National Metalwares L.p.Aurora100–499 UNVERIFIED
Oakley Steel Products COBellwood20–99 UNVERIFIED
Plymouth Tube COStreator— UNVERIFIED
Tricast/presfore CORPCrystal Lake— UNVERIFIED
Westwick Foundry LTDGalena1–19 UNVERIFIED
ABC Coating Co of IllinoisManteno20–99 LIKELY ACTIVE
Amco MachineSomonauk20–99 LIKELY ACTIVE
American Aluminum Extrusion HQ (Roscoe IL)Roscoe100–499 LIKELY ACTIVE
Andy's Deli & MikolajczkChicago— LIKELY ACTIVE
Batavia Foundry & Machine COBatavia— LIKELY ACTIVE
Behr Iron & MetalRockford— LIKELY ACTIVE
Bluewater Thermal Solutions - Chicago 3Melrose Park20–99 LIKELY ACTIVE
ChemetcoHartford— LIKELY ACTIVE
Chicago Magnesium Casting COBlue Island— LIKELY ACTIVE
Chicago White Metal Castings, INC.Bensenville100–499 LIKELY ACTIVE
Clingan Steel INC.Elk Grove Village20–99 LIKELY ACTIVE
Coilplus ILPlainfield20–99 LIKELY ACTIVE
Duro CastSomonauk20–99 LIKELY ACTIVE
Excel Machine Technology, INC.Elk Grove Village— LIKELY ACTIVE
Farmweld INC.Teutopolis20–99 LIKELY ACTIVE
Granite City WorksGranite City500+ LIKELY ACTIVE
Ims-amco Engineered Products LLCDes Plaines— LIKELY ACTIVE
Jet Enterprises & Holding CO LLCSauget— LIKELY ACTIVE
L&n IndustriesRushville1–19 LIKELY ACTIVE
Mid-States Recycling & RefiningDes Plaines20–99 LIKELY ACTIVE
M.s. Action Machining CORPMchenry20–99 LIKELY ACTIVE
Noramco Chicago INCLemont— LIKELY ACTIVE
Rock Island ArsenalRock Island— LIKELY ACTIVE
Sipi Metals CORPChicago100–499 LIKELY ACTIVE
Stateline Foundries IncRoscoe20–99 LIKELY ACTIVE
Wire Mesh, LLCOglesby20–99 LIKELY ACTIVE
Worth Steel and Machinery, INC.Alsip20–99 LIKELY ACTIVE
Abc-naco INCChicago Heights— LIKELY ACTIVE

Search all 550 facilities

All primary metal manufacturing nationwide · All manufacturing in Illinois