US Factory Map

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.

FacilityCityWhat EPA lists
Arcosa Marine Products - Plant #73CaruthersvilleUnlaminated Plastics Profile Shape Manufacturing
Shelter WorksSt. LouisAll Other Plastics Product Manufacturing
Srg Global Coatings, Inc.PortagevilleUnlaminated Plastics Profile Shape Manufacturing
Manchester Packaging CompanySt JamesUnlaminated Plastics Profile Shape Manufacturing
Superior Home Products IncWentzvilleUnlaminated Plastics Profile Shape Manufacturing
Atlas Eps PerryvillePerryvilleUnlaminated Plastics Profile Shape Manufacturing
Continental Products LLCMexicoAll Other Plastics Product Manufacturing
Edwards Fiberglass Inc SedaliaSedaliaUnlaminated Plastics Profile Shape Manufacturing
Redneck Outdoor ProductsLamarAll Other Plastics Product Manufacturing
S-R Finishing-Div Siegel-Robert IncPortagevilleUnlaminated Plastics Profile Shape Manufacturing
Henniges Automotive Sealing Systems NA Danny Scott DriveNew HavenAll Other Plastics Product Manufacturing
Alltrista Plastics LLCSpringfieldAll Other Plastics Product Manufacturing
Meramec Industries Inc Ramsey St PlantSullivanUnlaminated Plastics Profile Shape Manufacturing
Permea Inc-Div Of Air Products And ChemicalsSaint LouisAll Other Plastics Product Manufacturing
Aurora Technologies Inc.PacificUnlaminated Plastics Profile Shape Manufacturing
Caterpillar Inc.BoonvilleAll Other Plastics Product Manufacturing
Star Boards Inc -Star Boards IncNorth Kansas CityUnlaminated Plastics Profile Shape Manufacturing
Terra Star LLCRogersvillePlastics Pipe and Pipe Fitting Manufacturing
A B Chance Co Plastics PlantCentraliaAll Other Plastics Product Manufacturing
Allen Industries LLCSedaliaAll Other Plastics Product Manufacturing
Buckhorn IncSpringfieldAll Other Plastics Product Manufacturing
Cabka North AmericaHazelwoodAll Other Plastics Product Manufacturing
Collins & Aikman-Columbia OperationsColumbiaUnlaminated Plastics Profile Shape Manufacturing
Flex-O-Lators DivisionCarthageAll Other Plastics Product Manufacturing
Greenstreak Group IncKirkwoodAll Other Plastics Product Manufacturing
Niagara Bottling LLCKansas CityAll Other Plastics Product Manufacturing
Paccor Packaging SolutionsExcelsior SpringsUnlaminated Plastics Profile Shape Manufacturing
Perry Machine & Die Inc.PerryAll Other Plastics Product Manufacturing
Plastic Enterprises Co IncLees SummitUnlaminated Plastics Profile Shape Manufacturing
Ply Gem - Siding GroupKearneyAll Other Plastics Product Manufacturing
Quality Custom MoldingHermannAll Other Plastics Product Manufacturing
Rayco Services LLCLagrangeUnlaminated Plastics Profile Shape Manufacturing
Sinclair & Rush - Arnold PlantArnoldUnlaminated Plastics Profile Shape Manufacturing
Sinclair And RushFentonAll Other Plastics Product Manufacturing
Tiffany MarbleLees SummitUnlaminated Plastics Profile Shape Manufacturing
Toppan Thermoformed Packaging, Inc.ChillicotheAll Other Plastics Product Manufacturing
U. S. Poly Enterprises IncDexterUnlaminated Plastics Profile Shape Manufacturing
United Poly SystemsSpringfieldPlastics Pipe and Pipe Fitting Manufacturing
WintechCassvilleAll Other Plastics Product Manufacturing
Yanfeng Automotive InteriorsRiversideAll 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.