Costco support
U.S. Costco support numbers by department, with published hours.
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Costco support
| For | Call | Hours |
|---|---|---|
| Online orders and Logistics | 1-800-955-2292 | Mon–Fri 5am–8pm PT; weekends 5am–7pm PT |
| Membership and warehouses | 1-800-774-2678 | Mon–Fri 6am–6pm PT; weekends 8am–5pm PT |
| Business Center orders | 1-800-788-9968 | Mon–Fri 6am–5pm PT |
| Technical and warranty support | 1-866-861-0450 | Daily 5am–8pm PT |
For a specific warehouse department, such as the Tire Center, use that warehouse’s local number.
Sources: Contact page
U.S. numbers. Sources checked October 1, 2026. Phone menus and delays have not been tested.
Individual number maps
This short company hub helps select a number. Each link below opens a separate single-number source-only skeleton with original provenance and unknown menu/timing fields. No calls or verified live routes were added by this split.