Major employers in Cobourg

8 employers, 2 of them head offices: 1 worldwide, 0 national and 1 regional. Headcounts are for the site here, with the page that publishes them.

Cobourg — the /local page · Who represents Cobourg · Companies

Employers8
Worldwide HQ1
National HQ0
Regional HQ1
1

Employers, largest first

People employed at the site in this city where a source publishes it; head offices without a published count follow.

CompanyHereEmployees hereWorldwide HQJobs
Custom Plastics InternationalManufacturing — plastic injection mouldingWorldwide HQglobal (injection-moulding company located in Cobourg)—Cobourg, Ontario—
Northumberland CountyPublic administration — countyRegional HQNorthumberland County (upper-tier municipal government)—Cobourg, OntarioCareers →
Cameco Fuel Manufacturing — CobourgManufacturing — nuclear fuel and reactor componentspart of Cameco CorporationMajor site—Saskatoon, SaskatchewanCareers →
Cobourg Police ServicePublic administration — policeMajor site—Cobourg, OntarioCareers →
Fleming College — Cobourg CampusEducation — collegeMajor site—Peterborough, OntarioCareers →
Graphic Packaging International — CobourgManufacturing — paperboard packagingpart of Graphic Packaging Holding CompanyMajor site—Atlanta, GeorgiaCareers →
Northumberland Hills HospitalHealth care — hospitalMajor site—Cobourg, OntarioCareers →
Town of CobourgPublic administration — municipalMajor site—Cobourg, OntarioCareers →
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Notes on this record

  • No published Cobourg or Northumberland 'top employers' list with headcounts was found; the Town's old Key Sectors and Community Profile pages now return 404 (search snippets of the old page said the plastics sector is Cobourg's highest employer, many at Horizon Plastics).
  • Not added (site could not be opened): Horizon Plastics (horizonplastics.com and .ca — connection failed); Beneco Packaging (beneco.ca — 403); Baxter's Bakery (connection failed). Post Consumer Brands' Cobourg cereal plant has closed (Town job-fair notice).
  • No venture-funded software/tech company headquartered in Cobourg was found; the Town runs the Venture13 Innovation Centre.
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Sources

Prepared 2026-10-30. Each headcount links to the page it is read from; each company to its own site or its /company page.