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

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.

Facility	City	Employees	Status
AAAlpha Assembly Solutions INC	Itasca	100–499	◐ LIKELY ACTIVE
AHAmerican Highway	Kankakee	20–99	◐ LIKELY ACTIVE
ABAnchor Brake Shoe CO	West Chicago	20–99	◐ LIKELY ACTIVE
ATAtlas Tube INC	Chicago	100–499	◐ LIKELY ACTIVE
AGAzz Galvanizing Peoria	Peoria	20–99	◐ LIKELY ACTIVE
CPCast Products INC	Norridge	100–499	◐ LIKELY ACTIVE
Combined Metals Company LLC - Hampshire	Hampshire	100–499	◐ LIKELY ACTIVE
CLCurto Ligonier Foundries CO	Melrose Park	1–19	◐ LIKELY ACTIVE
DFDecatur Foundry, INC.	Decatur	100–499	◐ LIKELY ACTIVE
GDG&m Die Casting CO INC	Wood Dale	20–99	◐ LIKELY ACTIVE
GLGreat Lakes Precision Tube, INC.	Aurora	20–99	◐ LIKELY ACTIVE
IZImperial Zinc CORP	Chicago	20–99	◐ LIKELY ACTIVE
IDInland Die Casting INC	Wheeling	100–499	◐ LIKELY ACTIVE
LILemfco INC	Galena	1–19	◐ LIKELY ACTIVE
LIL&n Industries INC	Rushville	1–19	◐ LIKELY ACTIVE
MBMeskan Brass Foundry	Chicago	20–99	◐ LIKELY ACTIVE
MIMorton Industries LLC	Morton	100–499	◐ LIKELY ACTIVE
NPNaylor Pipe CO	Chicago	20–99	◐ LIKELY ACTIVE
POPeerless of America INC	Effingham	20–99	◐ LIKELY ACTIVE
PTPtc Tubular Products LLC	Fairbury	20–99	◐ LIKELY ACTIVE
RCRollex CORP	Elk Grove Village	100–499	◐ LIKELY ACTIVE
SMSoudan Metals Company INC.	Chicago	20–99	◐ LIKELY ACTIVE
TMTazewell Machine Works INC	Pekin	20–99	◐ LIKELY ACTIVE
TDTop Die Casting CO	South Beloit	100–499	◐ LIKELY ACTIVE
TFTrio Foundry Inc	Montgomery	20–99	◐ LIKELY ACTIVE
Tri-star Metals LLC	Freeport	100–499	◐ LIKELY ACTIVE
UWUnified Wire and Cable, INC.	Dekalb	20–99	◐ LIKELY ACTIVE
VFVermont Foundry CO	Vermont	20–99	◐ LIKELY ACTIVE
WTWheatland Tube CO - Chicago Div	Chicago	100–499	◐ LIKELY ACTIVE
WMWieland Metals INC	Wheeling	20–99	◐ LIKELY ACTIVE
ASArlington Structural Steel	Arlington Heights	1–19	◐ LIKELY ACTIVE
BIBerkshire Investments LLC Dba Chicago Extruded Metals Company	Cicero	20–99	◐ LIKELY ACTIVE
HWHorning Wire CORP	Lake Zurich	20–99	◐ LIKELY ACTIVE
MMMaass Midwest Manufacturing INC	Huntley	1–19	◐ LIKELY ACTIVE
MIMetal-matic INC	Bedford Park	—	◐ LIKELY ACTIVE
MIMidland Industries INC	Chicago	20–99	◐ LIKELY ACTIVE
OKO & K American CORP.	Chicago	100–499	◐ LIKELY ACTIVE
Quality Metal Finishing	Byron	—	◐ LIKELY ACTIVE
RFRockford Foundries	Rockford	1–19	◐ LIKELY ACTIVE
SLState Line Foundries INC	Roscoe	100–499	◐ LIKELY ACTIVE
WMWh Maze CO	Peru	1–19	◐ LIKELY ACTIVE
ADAallied Die Casting CO of Illinois	Franklin Park	—	◐ LIKELY ACTIVE
ARArcelormittal Riverdale, INC. - Riverdale Facility	Riverdale	—	◐ LIKELY ACTIVE
CICaterpillar INC - Mapleton Facility	Mapleton	—	◐ LIKELY ACTIVE
CECom Ed - United Scrap Metal INC	Cicero	500+	◐ LIKELY ACTIVE
CSCustom Steel Processing (2)	Madison	20–99	◐ LIKELY ACTIVE
DCDart Casting, Inc. Lombard Lane	Alsip	20–99	◐ LIKELY ACTIVE
DCDuro Cast INC	Somonauk	20–99	◐ LIKELY ACTIVE
EFExcel Foundry & Machine a Dba of Flsmidth INC	Pekin	—	◐ LIKELY ACTIVE
GCGranite City Works of United States Steel CORP	Granite City	—	◐ LIKELY ACTIVE

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