Costco.com Online Orders
1-800-955-2292
*including orders delivered by Costco Logistics

Phone Hours:
Mon - Fri: 5am - 8pm PT
Sat - Sun: 5am - 7pm PT
Chat Hours:
Mon - Fri: 5am - 8pm PT
Sat - Sun: 5am - 7pm PT

Membership and Warehouse
1-800-774-2678

Phone Hours:
Mon - Fri: 6am - 6pm PT
Sat - Sun: 8am - 5pm PT
Chat Hours:
Mon - Fri: 6:30am - 5:30pm PT
Sat - Sun: 8am - 5pm PT

Find and Call a Costco Near You
View Costco Services for Members

Costco Business Center Orders
1-800-788-9968

Phone Hours:
Mon - Fri: 6am - 5pm PT
Chat Hours:
Mon - Fri: 8am - 5pm PT

Costco Technical & Warranty Services Technical Support
1-866-861-0450

Mon - Sun: 5am - 8pm PT

Costco Home Improvement Installed Products

For Graber Window Treatments: 1-855-742-9130
For Lennox HVAC: 1-877-483-6226
For Sunrun Solar: 1-800-776-0260
For Shaw Flooring & Carpet:1-866-222-9340
For all other items: 1-866-455-1788

Mon - Fri: 5am - 7pm PT
Sat - Sun: 7am - 5pm PT

Costco Mail Order Pharmacy
1-800-607-6861

Mon - Fri: 5am - 7pm PT
Sat: 9:30am - 2pm PT

Costco Travel
1-877-849-2730

Mon - Fri: 5am - 7pm PT
Sat - Sun: 6am - 5pm PT