What are Costco’s hours of operation? There may be slight variations in hours for each warehouse. We recommend that you view the location information for a warehouse near you …

Find your nearest Costco warehouse location and explore helpful self-service options for customer support.

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

For more information on our Costco Travel program, please visit our Costco Travel website at www.costcotravel.com. Costco Travel can also be reached by calling them directly at 1-877 …

Costco Gas Station FAQs As our valued member, you expect Costco to always offer the finest quality products at the best possible price. Our Kirkland Signature™ fuel is no exception to the …

For self-service assistance, see the What is Costco’s return policy? Diamonds: 1.00ct or larger: Members returning a diamond over 1.00ct must also present all original paperwork (IGI and/or …

Chat Hours: Mon - Fri: 6:30am - 5:30pm PT Sat - Sun: 8am - 5pm PT December 31, 2025 (New Year's Eve): 8am - 3pm PT January 1, 2026 (New Year's Day): Closed To speak to any …

The Costco Tire Center offers several installation and maintenance services to get our members on the road, including rotation, balance, nitrogen inflation, nitrogen conversion, and flat repair.

Costco Technical & Warranty Services Volume Sales: Export & Domestic Order Status Preventing Fraud Shipping Rebates Recalls & Product Notices Returns and Exchanges Returns Policy …

Costco Technical & Warranty Services Volume Sales: Export & Domestic Order Status Preventing Fraud Shipping Rebates Recalls & Product Notices Returns and Exchanges Returns Policy …