Pyrex
Last verified: April 2026
Read our full verification: Is Pyrex Made in USA?Verification Summary
American Score
Manufacturing Location
Charleroi, PA
Headquarters
Rosemont, IL
Founded
1915
Products Verified
16 products
Evidence Breakdown
Factory Location Specificity
Specific factory city identified
Website Claim
Brand website explicitly claims Made in USA
Manufacturing History
20+ years of USA manufacturing
Known Overseas Production
No known overseas production
Verification Notes
Glass bakeware manufactured in Charleroi, PA since 1915 (now under World Kitchen). USA-made glass bakeware line.
Last verified: April 2026
Pyrex has been manufacturing products in Charleroi, PA since 1915. We carry 16 verified American-made Pyrex products.
Heritage & History
Pyrex was born from a practical experiment by Bessie Littleton in 1913. Her husband Jesse, a physicist at Corning Glass Works in Corning, New York, brought home a sawed-off battery jar made from Corning's new borosilicate glass. Bessie baked a sponge cake in it and found it cooked more evenly than her metal pan. By 1915, Corning had commercialized the concept and Pyrex glass bakeware entered American kitchens.
For decades, Pyrex was synonymous with borosilicate glass — a formulation that handles thermal shock far better than standard glass. The brand passed through several corporate owners over the century, and consumer-grade Pyrex sold in the United States today is made from tempered soda-lime glass, while laboratory Pyrex retains the original borosilicate formula.
American Manufacturing
Consumer Pyrex products — the measuring cups, baking dishes, and storage containers found in millions of American homes — are manufactured domestically at facilities operated by Corelle Brands in the United States. The Charleroi, Pennsylvania glass plant has been a cornerstone of Pyrex production for generations.
The classic Pyrex measuring cup, with its red lettering on clear glass, has remained essentially unchanged in form for over a century. It is a design so well resolved that it has never needed a redesign — the shape pours cleanly, the graduations read clearly, and the glass is heavy enough to feel authoritative without being cumbersome.
A Kitchen Standard
Few kitchen products have achieved the cultural penetration of Pyrex. The brand appears in virtually every American kitchen regardless of income level, region, or cooking style. Vintage Pyrex pieces from the 1950s through 1980s — often featuring bold patterned designs — have become sought-after collectibles, with active communities of enthusiasts who hunt for intact sets at estate sales.
The utilitarian simplicity of Pyrex — glass you can put in the oven, the refrigerator, and the microwave — reflects a kind of honest American kitchen philosophy: functional, durable, and built to outlast trends.
Quick Picks
Frequently Asked Questions
Is Pyrex made in the USA?
Yes. Pyrex manufactures 16 verified products in Charleroi, PA. Pyrex glass bakeware has been made in the United States since 1915 and remains one of the most trusted names in American kitchens, known for its thermal durability and timeless utilitarian design.
Where is Pyrex manufactured?
Pyrex is headquartered in Rosemont, IL. Manufacturing takes place in Charleroi, PA.
What Pyrex products can I buy?
We carry 16 verified Pyrex products across Home & Kitchen. Every listing links directly to Amazon with verified American manufacturing.
When was Pyrex founded?
Pyrex was founded in 1915. Pyrex glass bakeware has been made in the United States since 1915 and remains one of the most trusted names in American kitchens, known for its thermal durability and timeless utilitarian design.
Does Pyrex ship from Amazon?
Yes, all Pyrex products listed here are available on Amazon with free shipping for Prime members.