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 Illinois18 FACILITIES
Listing 18 of 30: the facilities with a website, a size band or two sources on record. The rest are in site search.
| Facility | City | Employees | Status |
|---|---|---|---|
| Alu-bra Foundry, INC. | Bensenville | 20–99 | ACTIVE |
| Round Ground Metals, INC. | Hanover Park | 100–499 | ACTIVE |
| Billco CORP. | Addison | — | ACTIVE |
| Teledyne Defense Electronics, LLC | Woodridge | — | ACTIVE |
| Associated Fastening Products, INC. | Itasca | — | ACTIVE |
| Alpha Assembly Solutions INC | Itasca | 100–499 | LIKELY ACTIVE |
| Anchor Brake Shoe CO | West Chicago | 20–99 | LIKELY ACTIVE |
| G&m Die Casting CO INC | Wood Dale | 20–99 | LIKELY ACTIVE |
| Plymouth Tube Company - Warrenville | Warrenville | 20–99 | LIKELY ACTIVE |
| Krueger Steel & Wire, INC. | Elmhurst | — | LIKELY ACTIVE |
| Chicago White Metal Castings, INC. | Bensenville | 100–499 | LIKELY ACTIVE |
| Nta Precision Axle CORP | Carol Stream | — | LIKELY ACTIVE |
| Qualitek International INC | Addison | — | LIKELY ACTIVE |
| Amcast INC | Bensenville | — | UNVERIFIED |
| Odermath USA INC | Naperville | — | UNVERIFIED |
| Precision Extrusions LLC | Bensenville | — | UNVERIFIED |
| Sims Recycling Solutions | West Chicago | — | UNVERIFIED |
| Naperville | Naperville | 500+ | LIKELY ACTIVE |
All primary metal manufacturing nationwide · All manufacturing in Illinois