Private company

CalPortland Company

Logo: CalPortland Company, PD, via Wikipedia3

American corporation specializing in cement and other building materials

CalPortland Company, or simply CalPortland, is an American corporation that produces cement and other building materials. It was founded in 1891 and claims to be the largest such company in the Western United States.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

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CalPortland Company, or simply CalPortland, is an American corporation that produces cement and other building materials. It was founded in 1891 and claims to be the largest such company in the Western United States.2

Sources

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