Plastic injection molding companies in Missouri
Missouri has 95 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 Kansas City, Saint Louis and Lees Summit. That is 3% of the 3,730 such facilities nationwide, and Missouri ranks #13 of 49 states.
- Product
- Plastic injection molding companies
- Facilities
- 95
- State rank
- #13
- NAICS
- 326121, 326122, 326199
- Revised
- November 1, 2026
Facilities in Missouri
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 |
|---|---|---|
| Arcosa Marine Products - Plant #73 | Caruthersville | Unlaminated Plastics Profile Shape Manufacturing |
| Shelter Works | St. Louis | All Other Plastics Product Manufacturing |
| Srg Global Coatings, Inc. | Portageville | Unlaminated Plastics Profile Shape Manufacturing |
| Manchester Packaging Company | St James | Unlaminated Plastics Profile Shape Manufacturing |
| Superior Home Products Inc | Wentzville | Unlaminated Plastics Profile Shape Manufacturing |
| Atlas Eps Perryville | Perryville | Unlaminated Plastics Profile Shape Manufacturing |
| Continental Products LLC | Mexico | All Other Plastics Product Manufacturing |
| Edwards Fiberglass Inc Sedalia | Sedalia | Unlaminated Plastics Profile Shape Manufacturing |
| Redneck Outdoor Products | Lamar | All Other Plastics Product Manufacturing |
| S-R Finishing-Div Siegel-Robert Inc | Portageville | Unlaminated Plastics Profile Shape Manufacturing |
| Henniges Automotive Sealing Systems NA Danny Scott Drive | New Haven | All Other Plastics Product Manufacturing |
| Alltrista Plastics LLC | Springfield | All Other Plastics Product Manufacturing |
| Meramec Industries Inc Ramsey St Plant | Sullivan | Unlaminated Plastics Profile Shape Manufacturing |
| Permea Inc-Div Of Air Products And Chemicals | Saint Louis | All Other Plastics Product Manufacturing |
| Aurora Technologies Inc. | Pacific | Unlaminated Plastics Profile Shape Manufacturing |
| Caterpillar Inc. | Boonville | All Other Plastics Product Manufacturing |
| Star Boards Inc -Star Boards Inc | North Kansas City | Unlaminated Plastics Profile Shape Manufacturing |
| Terra Star LLC | Rogersville | Plastics Pipe and Pipe Fitting Manufacturing |
| A B Chance Co Plastics Plant | Centralia | All Other Plastics Product Manufacturing |
| Allen Industries LLC | Sedalia | All Other Plastics Product Manufacturing |
| Buckhorn Inc | Springfield | All Other Plastics Product Manufacturing |
| Cabka North America | Hazelwood | All Other Plastics Product Manufacturing |
| Collins & Aikman-Columbia Operations | Columbia | Unlaminated Plastics Profile Shape Manufacturing |
| Flex-O-Lators Division | Carthage | All Other Plastics Product Manufacturing |
| Greenstreak Group Inc | Kirkwood | All Other Plastics Product Manufacturing |
| Niagara Bottling LLC | Kansas City | All Other Plastics Product Manufacturing |
| Paccor Packaging Solutions | Excelsior Springs | Unlaminated Plastics Profile Shape Manufacturing |
| Perry Machine & Die Inc. | Perry | All Other Plastics Product Manufacturing |
| Plastic Enterprises Co Inc | Lees Summit | Unlaminated Plastics Profile Shape Manufacturing |
| Ply Gem - Siding Group | Kearney | All Other Plastics Product Manufacturing |
| Quality Custom Molding | Hermann | All Other Plastics Product Manufacturing |
| Rayco Services LLC | Lagrange | Unlaminated Plastics Profile Shape Manufacturing |
| Sinclair & Rush - Arnold Plant | Arnold | Unlaminated Plastics Profile Shape Manufacturing |
| Sinclair And Rush | Fenton | All Other Plastics Product Manufacturing |
| Tiffany Marble | Lees Summit | Unlaminated Plastics Profile Shape Manufacturing |
| Toppan Thermoformed Packaging, Inc. | Chillicothe | All Other Plastics Product Manufacturing |
| U. S. Poly Enterprises Inc | Dexter | Unlaminated Plastics Profile Shape Manufacturing |
| United Poly Systems | Springfield | Plastics Pipe and Pipe Fitting Manufacturing |
| Wintech | Cassville | All Other Plastics Product Manufacturing |
| Yanfeng Automotive Interiors | Riverside | 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
- Kansas City: 8
- Saint Louis: 7
- Lees Summit: 4
- Lamar: 3
- Springfield: 3
- Columbia: 3
By product code
- All Other Plastics Product Manufacturing (NAICS 326199): 21 of those shown
- Unlaminated Plastics Profile Shape Manufacturing (NAICS 326121): 17 of those shown
- Plastics Pipe and Pipe Fitting Manufacturing (NAICS 326122): 2 of those shown
All plastics and rubber manufacturing in Missouri: 146 facilities and Census job counts.