US Factory Map

Plastic injection molding companies in Pennsylvania

Pennsylvania has 171 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 Erie, Lancaster and Hanover. That is 5% of the 3,730 such facilities nationwide, and Pennsylvania ranks #7 of 49 states.

Product
Plastic injection molding companies
Facilities
171
State rank
#7
NAICS
326121, 326122, 326199
Revised
November 1, 2026

Facilities in Pennsylvania

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
Aquatic Co/W Donegal TwpElizabethtownAll Other Plastics Product Manufacturing
Armstrong World Ind Inc/Floor CLancasterAll Other Plastics Product Manufacturing
Congoleum Corp/trainer PltTrainerAll Other Plastics Product Manufacturing
Rynone Manufacturing CorpSayreAll Other Plastics Product Manufacturing
Creative Pultrusions Bldg No 5 Tower TechAlum BankAll Other Plastics Product Manufacturing
Dart Container Corp Of PennsylvaniaLeolaUnlaminated Plastics Profile Shape Manufacturing
Haysite Reinforced Plastics Llc/erieErieUnlaminated Plastics Profile Shape Manufacturing
Kerrico Corp/pennSelinsgroveUnlaminated Plastics Profile Shape Manufacturing
Molded Fiber Glass Co/union CityUnion CityUnlaminated Plastics Profile Shape Manufacturing
Occidental Chemical CorpPottstownAll Other Plastics Product Manufacturing
Fiber Glass Sys Inc/mt Union PltMount UnionAll Other Plastics Product Manufacturing
Foam FabricatorsBloomsburgAll Other Plastics Product Manufacturing
Molded Fiber Glass Tray CoLinesvilleAll Other Plastics Product Manufacturing
Clarion BathwareMarbleUnlaminated Plastics Profile Shape Manufacturing
Mcclarin Plastics Llc/blettner AveHanoverUnlaminated Plastics Profile Shape Manufacturing
Surteco North Amer Inc/jeannette PltJeannetteAll Other Plastics Product Manufacturing
Armstrong World Industries IncLancasterAll Other Plastics Product Manufacturing
Donaldson Co Ivyland FacIvylandAll Other Plastics Product Manufacturing
GafNew ColumbiaAll Other Plastics Product Manufacturing
L & P Berwick Div Leggett & Platt/salem TwpBerwickAll Other Plastics Product Manufacturing
Leer East IncMiltonAll Other Plastics Product Manufacturing
North Amer Pipe Corp/leolaLeolaPlastics Pipe and Pipe Fitting Manufacturing
Retal Pa LLCDonoraAll Other Plastics Product Manufacturing
Sylvin Technologies IncDenverUnlaminated Plastics Profile Shape Manufacturing
Veka IncFombellUnlaminated Plastics Profile Shape Manufacturing
Brentwood Ind Lebanon Plastic Extrusion PltLebanonUnlaminated Plastics Profile Shape Manufacturing
Bway Pkg Div Bway Corp York Can PltYorkAll Other Plastics Product Manufacturing
Craigg Mfg Llc/sinking SpringSinking SpringAll Other Plastics Product Manufacturing
Fxi Inc - Corry FacilityCorryUnlaminated Plastics Profile Shape Manufacturing
Mi Windows & Doors IncHeginsAll Other Plastics Product Manufacturing
Optinova Plymouth Meeting FacilityNorristownUnlaminated Plastics Profile Shape Manufacturing
Optinova Valley Forge/plymouth MeetingPlymouth MeetingUnlaminated Plastics Profile Shape Manufacturing
Pretium Pkg Llc/yorkManchesterUnlaminated Plastics Profile Shape Manufacturing
Ahf LLC DBA Ahf Prod/lancasterLancasterAll Other Plastics Product Manufacturing
Airlite Plastics CoNazarethAll Other Plastics Product Manufacturing
Brentwood Industries SpgReadingAll Other Plastics Product Manufacturing
Carpenter CoAllentownAll Other Plastics Product Manufacturing
Congoleum Corporation Plant No. 3TrainerAll Other Plastics Product Manufacturing
Crestwood Membranes Inc/wright TwpMountain TopUnlaminated Plastics Profile Shape Manufacturing
Donaldson Co IncFeastervilleAll 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

  • Erie: 10
  • Lancaster: 8
  • Hanover: 7
  • Easton: 4
  • Reading: 3
  • Allentown: 3

By product code

  • All Other Plastics Product Manufacturing (NAICS 326199): 25 of those shown
  • Unlaminated Plastics Profile Shape Manufacturing (NAICS 326121): 14 of those shown
  • Plastics Pipe and Pipe Fitting Manufacturing (NAICS 326122): 1 of those shown

All plastics and rubber manufacturing in Pennsylvania: 313 facilities and Census job counts.