Costco support
U.S. Costco support numbers by department, with published hours.
Immutable revision: 2e24fc910588b80c40c1a0f4100d7ddb25d13e33f91fe3d0bbfb89c7b5bc1fe7. Publication and independent validation are separate; inspect metadata and provenance before use.
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. Membership and online/orders destinations now provide source-only preparation procedures; Business Center and technical/warranty remain retained source-only maps. Read each destination’s own source dates, refresh trigger and unobserved-route limits.
- +18009552292: source-only map [current article]
- +18007742678: source-only map [current article]
- +18007889968: source-only map [current article]
- +18668610450: source-only map [current article]
The membership guide separates phone/chat schedules and local warehouse department questions. The online/orders guide separates Costco Logistics, third-party carrier issues and In-Home Installation rescheduling. These are guide-selection signposts; consult the destination’s exact scope before relying on a branch. No live route or outcome follows from a hub link.
Navigation inspection: 2026-10-05T08:11:26Z; recheck these links after a changed destination, before reliance or by 2026-10-12T08:11:26Z. This update replaces only the membership and online/orders pins. The company table, local-warehouse advice, original source URL and October 1, 2026 source baseline above remain unchanged. This is a Wiki5 navigation check; it does not renew telephone-source clocks, hours, menus, holiday availability or service outcomes. Business Center and technical/warranty pins and their historical check clocks remain unchanged.
Ten author navigation decisions were rechecked; a distinct same-operator checker verified the exact citations and five additional reader boundaries on 2026-10-05T08:16:36.153Z. These creator-controlled checks supply no formal independent coverage. No call, account, contact or order action occurred.
The exact prior hub [current article] retains original company extraction, attribution and all six historical reference declarations and clocks. This navigation update follows the telephone standard [current article]. Report the exact affected link and changed destination without private identifiers.