US Factory Map

Plastic injection molding companies in Maryland

Maryland has 34 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 Elkton, Williamsport and Baltimore. That is under 1% of the 3,730 such facilities nationwide, and Maryland ranks #30 of 49 states.

Product
Plastic injection molding companies
Facilities
34
State rank
#30
NAICS
326121, 326122, 326199
Revised
November 1, 2026

Facilities in Maryland

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.

FacilityCityWhat EPA lists
Congoleum IndustriesFinksburgAll Other Plastics Product Manufacturing
Xerxes CorpWilliamsportAll Other Plastics Product Manufacturing
Certainteed CorpWilliamsportAll Other Plastics Product Manufacturing
Solo Cup Operating CompanyFederalsburgAll Other Plastics Product Manufacturing
W. L. Gore & Associates, Inc.ElktonAll Other Plastics Product Manufacturing
Wl Gore & Associates Inc Elk Mills 2ElktonAll Other Plastics Product Manufacturing
Monarch Manufacturing, Inc.BelcampUnlaminated Plastics Profile Shape Manufacturing
W. L. Gore & Associates Inc. Appleton South SiteElktonAll Other Plastics Product Manufacturing
W.l. Gore & Associates- Lovett 1ElktonAll Other Plastics Product Manufacturing
Ats Scientific Products - Bel ArtPocomoke CityAll Other Plastics Product Manufacturing
Baycraft Fiberglass EngineeringHavre De GraceAll Other Plastics Product Manufacturing
Becton DickinsonPylesvilleAll Other Plastics Product Manufacturing
C R DanielsEllicott CityAll Other Plastics Product Manufacturing
Chevron Phillips Chemical Co Performance Pipe DivHagerstownPlastics Pipe and Pipe Fitting Manufacturing
Composites USA IncBay ViewPlastics Pipe and Pipe Fitting Manufacturing
Creative PlasticsRosedaleAll Other Plastics Product Manufacturing
Cushion CraftCumberlandAll Other Plastics Product Manufacturing
Eaton Aeroquip IncWilliamsportAll Other Plastics Product Manufacturing
Fibrefine InternationalLaurelAll Other Plastics Product Manufacturing
Fluoron, IncElktonUnlaminated Plastics Profile Shape Manufacturing
Foundary Ser & SuplyPikesvilleAll Other Plastics Product Manufacturing
Harbor City PlasticsAbingdonAll Other Plastics Product Manufacturing
Hedwin CorporationBaltimoreAll Other Plastics Product Manufacturing
Jamotuf, LLCWilliamsportAll Other Plastics Product Manufacturing
Maryland PlasticsFederalsburgAll Other Plastics Product Manufacturing
Moldcraft Inc.BaltimoreAll Other Plastics Product Manufacturing
Niagara Bottling, LLCBaltimoreAll Other Plastics Product Manufacturing
Old Line Plastics IncForest HillAll Other Plastics Product Manufacturing
Plastipak IncHavre De GraceAll Other Plastics Product Manufacturing
Poly-Seal CorpBaltimoreAll Other Plastics Product Manufacturing
Pressure Technology IncHanoverPlastics Pipe and Pipe Fitting Manufacturing
Superfos PackagingCumberlandAll Other Plastics Product Manufacturing
W. L. Gore And AssociatesElktonAll Other Plastics Product Manufacturing
Waldorf MarbleWhite PlainsPlastics Pipe and Pipe Fitting 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

  • Elkton: 6
  • Williamsport: 4
  • Baltimore: 4
  • Federalsburg: 2
  • Havre De Grace: 2
  • Cumberland: 2

By product code

  • All Other Plastics Product Manufacturing (NAICS 326199): 28
  • Plastics Pipe and Pipe Fitting Manufacturing (NAICS 326122): 4
  • Unlaminated Plastics Profile Shape Manufacturing (NAICS 326121): 2

All plastics and rubber manufacturing in Maryland: 76 facilities and Census job counts.