Costco is a leading wholesale grocery retailer offering a vast selection of products, groceries, and household items to customers across the United States and beyond, primarily in Westminster, California.
Operator computes a Health score every night at 2 am HST. It's the one number that tells you if this shop is winning, losing, or steady. Here's how Costco broke down on May 9, 2026.
Costco is indexed in Operator's Wholesalegrocer market index for Westminster, CA.
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The Wholesalegrocer shops Costco competes with most often, ranked by Operator's health score. Tap any row for that shop's full page.
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