US Factory Map

Plastic injection molding companies in Massachusetts

Massachusetts has 133 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 Leominster, Pittsfield and Holyoke. That is 4% of the 3,730 such facilities nationwide, and Massachusetts ranks #10 of 49 states.

Product
Plastic injection molding companies
Facilities
133
State rank
#10
NAICS
326121, 326122, 326199
Revised
November 1, 2026

Facilities in Massachusetts

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
Solutia Inc - Indian Orchard PlantSpringfieldAll Other Plastics Product Manufacturing
Jain Americas - Nucedar MillsChicopeeAll Other Plastics Product Manufacturing
Entegris IncBillericaAll Other Plastics Product Manufacturing
Georgiapacific Consumer Operations LLCLeominsterAll Other Plastics Product Manufacturing
Advanced Drainage SystemLudlowPlastics Pipe and Pipe Fitting Manufacturing
Amcor IncSterlingAll Other Plastics Product Manufacturing
Americad TechnologyNorwood, Town OfAll Other Plastics Product Manufacturing
Anika TherapeuticsBedfordAll Other Plastics Product Manufacturing
Berry PlasticsEasthamptonUnlaminated Plastics Profile Shape Manufacturing
Createk Stone IncSouthbridgeAll Other Plastics Product Manufacturing
Double A Molding IncMonsonAll Other Plastics Product Manufacturing
EntegrisBedfordAll Other Plastics Product Manufacturing
G&f IndustriesSturbridgeAll Other Plastics Product Manufacturing
Leaktite CorporationLeominsterAll Other Plastics Product Manufacturing
Mark Richey Woodworking & Design IncNewburyportAll Other Plastics Product Manufacturing
Micron Medical ProductsFitchburg, City OfAll Other Plastics Product Manufacturing
Nypro DevensDevensAll Other Plastics Product Manufacturing
Pittsfield Plastics Engineering LLCPittsfieldAll Other Plastics Product Manufacturing
Placon Im IncWest SpringfieldAll Other Plastics Product Manufacturing
Polymer CorpPalmerAll Other Plastics Product Manufacturing
Polymer DesignRocklandAll Other Plastics Product Manufacturing
Sealed Air CorpHolyokeAll Other Plastics Product Manufacturing
Select EngineeringFitchburgAll Other Plastics Product Manufacturing
Sheffield PlasticsSheffieldAll Other Plastics Product Manufacturing
Thermo-FabShirleyAll Other Plastics Product Manufacturing
Universal Plastics CorpHolyokeAll Other Plastics Product Manufacturing
Beacon Medtech Solutions JytekLeominsterAll Other Plastics Product Manufacturing
Hardigg IndustriesDeerfieldAll Other Plastics Product Manufacturing
Lacerta GroupMansfieldAll Other Plastics Product Manufacturing
Mold Tech NortheastChicopeeAll Other Plastics Product Manufacturing
Pcl Packaging IncDightonAll Other Plastics Product Manufacturing
Pelican ProductsSouth DeerfieldAll Other Plastics Product Manufacturing
Sika Corp Sika Sarnafil DivCantonAll Other Plastics Product Manufacturing
Solo Cup Operating CorpNorth AndoverAll Other Plastics Product Manufacturing
United SolutionsLeominsterAll Other Plastics Product Manufacturing
3M Co Static Control SystemsChelmsfordUnlaminated Plastics Profile Shape Manufacturing
Ace-Lon CorpAyerAll Other Plastics Product Manufacturing
Adhesive PackagingPeabodyAll Other Plastics Product Manufacturing
AmarayPittsfieldAll Other Plastics Product Manufacturing
Anderson Power Prod Div Anderson IntercoSterlingAll 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

  • Leominster: 12
  • Pittsfield: 4
  • Holyoke: 4
  • Canton: 4
  • Woburn: 4
  • Sterling: 3

By product code

  • All Other Plastics Product Manufacturing (NAICS 326199): 37 of those shown
  • Unlaminated Plastics Profile Shape Manufacturing (NAICS 326121): 2 of those shown
  • Plastics Pipe and Pipe Fitting Manufacturing (NAICS 326122): 1 of those shown

All plastics and rubber manufacturing in Massachusetts: 269 facilities and Census job counts.