Plastic injection molding companies in Illinois
Illinois has 147 plastic injection molders in EPA records, facilities that list codes for plastic parts and products made by molding, including injection-molded components. The most are in Elk Grove Village, West Chicago and Chicago. That is 4% of the 3,730 such facilities nationwide, and Illinois ranks #8 of 49 states.
- Product
- Plastic injection molding companies
- Facilities
- 147
- State rank
- #8
- NAICS
- 326121, 326122, 326199
- Revised
- November 1, 2026
Facilities in Illinois
These are active facilities in EPA's ECHO database that list a code for plastic parts and products made by molding, including injection-molded components. The 40 shown first are the ones with the most EPA program records, which usually means the larger sites.
| Facility | City | What EPA lists |
|---|---|---|
| Viscofan USA, Inc. | Danville | Unlaminated Plastics Profile Shape Manufacturing |
| Armstrong Flooring Inc | Kankakee | All Other Plastics Product Manufacturing |
| Amcor Flexibles Healthcare Inc | Mundelein | All Other Plastics Product Manufacturing |
| Caterpillar Inc - Mossville Facility | Mossville | All Other Plastics Product Manufacturing |
| Prairie State Generating Station | Marissa | All Other Plastics Product Manufacturing |
| Custom Marble Inc | Millstadt | All Other Plastics Product Manufacturing |
| New Wincup Holdings Inc | West Chicago | All Other Plastics Product Manufacturing |
| Southern Illinois Storm Shelters Inc | Benton | All Other Plastics Product Manufacturing |
| Sweetheart Solo Cup Co | Chicago | Unlaminated Plastics Profile Shape Manufacturing |
| Carstin Brands Inc | Arthur | All Other Plastics Product Manufacturing |
| Eakas Corp | Peru | All Other Plastics Product Manufacturing |
| Valto Inc | Channahon | All Other Plastics Product Manufacturing |
| Imperial Marble Corp | Somonauk | All Other Plastics Product Manufacturing |
| Latham Pool Products Inc D/B/A Viking Pools-Il | Dix | All Other Plastics Product Manufacturing |
| Marble Works | South Elgin | All Other Plastics Product Manufacturing |
| The Dow Chemical Co | Joliet | All Other Plastics Product Manufacturing |
| Apollo Plastics | Chicago | All Other Plastics Product Manufacturing |
| Silgan White Cap Corp | Champaign | All Other Plastics Product Manufacturing |
| Vanseal Corp | Vandalia | All Other Plastics Product Manufacturing |
| Beecher Protective Solutions Packaging Plant | Beecher | Plastics Pipe and Pipe Fitting Manufacturing |
| Bema Inc | Elmhurst | All Other Plastics Product Manufacturing |
| Bio Star Films LLC | Chicago | All Other Plastics Product Manufacturing |
| Clear Pack Company | Franklin Park | All Other Plastics Product Manufacturing |
| Com-Pac International Inc | Carbondale | All Other Plastics Product Manufacturing |
| Consolidated Container Co | Elk Grove Village | All Other Plastics Product Manufacturing |
| Custom Coating Innovations Inc | Belleville | All Other Plastics Product Manufacturing |
| Davies Molding Co LLC | Carol Stream | All Other Plastics Product Manufacturing |
| Diller Tile Company Inc. | Chatsworth | Plastics Pipe and Pipe Fitting Manufacturing |
| Dow Chemical Co | Charleston | All Other Plastics Product Manufacturing |
| Hoffer Plastics Corp | South Elgin | All Other Plastics Product Manufacturing |
| Huntsman | Ringwood | All Other Plastics Product Manufacturing |
| Industrial Fiber Glass Inc | Melrose Park | All Other Plastics Product Manufacturing |
| Itw Hi-Cone | Charleston | All Other Plastics Product Manufacturing |
| Kastalon Inc | Alsip | All Other Plastics Product Manufacturing |
| Medline Inc. | Mundelein | All Other Plastics Product Manufacturing |
| Mikron Midwest | Winnebago | All Other Plastics Product Manufacturing |
| Olon Industries Inc | Geneva | All Other Plastics Product Manufacturing |
| Pactiv LLC | Grant Park | All Other Plastics Product Manufacturing |
| Pactiv LLC | Manteno | All Other Plastics Product Manufacturing |
| Perfect Plastic Printing Corp | Saint Charles | All Other Plastics Product Manufacturing |
Industry codes are reported by facilities to EPA programs and are not checked here. A few listings may be repair shops, distributors or recyclers. How these records work.
Where they are
- Elk Grove Village: 8
- West Chicago: 7
- Chicago: 7
- Saint Charles: 4
- Des Plaines: 4
- Mundelein: 3
By product code
- All Other Plastics Product Manufacturing (NAICS 326199): 36 of those shown
- Unlaminated Plastics Profile Shape Manufacturing (NAICS 326121): 2 of those shown
- Plastics Pipe and Pipe Fitting Manufacturing (NAICS 326122): 2 of those shown
All plastics and rubber manufacturing in Illinois: 262 facilities and Census job counts.