Shopping is about to get supersized in Highland. A new Costco warehouse will open Saturday in the San Bernardino County community about 65 miles east of Los Angeles. The warehouse is one of eight ...

BRENTWOOD, Calif. (KGO) -- Costco is marking the grand opening of their largest store in the state of California. Nestled into the East Bay, the store is in Brentwood off of Heidorn Ranch Road.

Editor’s note: This article has been updated to clarify the locations of the California Costco stores. Costco is bringing its behemoth retail warehouses (and nearly as behemoth hot dogs) to ...