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
Plants in Illinois12 FACILITIES
Listing 12 of 18: the facilities with a website, a size band or two sources on record. The rest are in site search.
| Facility | City | Employees | Status |
|---|---|---|---|
| Central Wire, INC. | Union | 20–99 | ACTIVE |
| Charter Dura-bar, INC. | Woodstock | — | ACTIVE |
| Maass Midwest Manufacturing INC | Huntley | 1–19 | LIKELY ACTIVE |
| Techalloy CO INC | Union | — | LIKELY ACTIVE |
| Arntzen CORP | Woodstock | — | LIKELY ACTIVE |
| Charter Manufacturing CO INC | Woodstock | — | LIKELY ACTIVE |
| Tricast/presfore CORP | Crystal Lake | — | UNVERIFIED |
| M.s. Action Machining CORP | Mchenry | 20–99 | LIKELY ACTIVE |
| Allied Die Casting CORP | Mchenry | — | UNVERIFIED |
| Heartland Foundry CORP | Marengo | — | UNVERIFIED |
| Dura-Bar | Woodstock | 100–499 | LIKELY ACTIVE |
| EMS Industrial and Service Company | Richmond | 20–99 | UNVERIFIED |
All primary metal manufacturing nationwide · All manufacturing in Illinois