Pfizer Kalamazoo (Portage) Manufacturing Site
Pfizer, Portage, Michigan
Pfizer's Kalamazoo site in Portage, Michigan, is a 1,300-acre facility that Pfizer calls the largest manufacturing site in its network. It makes about 1,200 metric tons of active pharmaceutical ingredients and 140 million units of sterile injectables and other medicines a year, shipping to 113 countries, and has made some U.S. supply of the COVID-19 vaccine. About 3,000 people worked across the west Michigan site in late 2022.
- Company
- Pfizer
- Status
- Operating
- Opened
- Not stated
- Employees
- 3,000
- news
- Industry
- Pharmaceuticals
- Revised
- November 12, 2026
What is made here
Active pharmaceutical ingredients, sterile injectable and liquid/semi-solid medicines and a surgical hemostat device; it has also made the Pfizer-BioNTech COVID-19 vaccine.
Facts
| Site size | A 1,300-acre facility, the largest manufacturing site in the Pfizer network (company: pfizer.com) |
|---|---|
| API output | 1,200 metric tons of active pharmaceutical ingredients a year, from fermentation, synthesis and biologic antibody production (company: pfizer.com) |
| Drug products | 140 million units a year of sterile injectables and liquid/semi-solid medicines (company: pfizer.com) |
| Reach | Ships to 113 countries (company: pfizer.com) |
| Workforce | About 3,000 people work across the west Michigan site (December 2022) (news: bridgemi.com) |
| Modular aseptic center | A 400,000-square-foot modular aseptic processing center, announced in 2018 with an initial $465 million investment (news: bridgemi.com) |
Figures are as stated by the source named next to each one. Company figures are the company's own claims.
Can you visit?
We haven't found a public tour of this factory. See factory tours in Michigan.
Sources
- Pfizer Global Supply: Kalamazoo, Michigan (company, checked November 12, 2026)
- Bridge Michigan: Pfizer expansion near Kalamazoo (news, checked November 11, 2026)
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