Costco Customer Service

Costco Wholesale Corporation is one of the largest retailers not only in the Unites States, but also far beyond the border. Costco locations are in the United States and Canada, the United Kingdom and Mexico, Australia and Japan, South Korea and Taiwan. The headquarter of this large membership warehouse chain is in Issaquah, Washington.

Costco Corporation was founded on September 15, 1983 by Jeffrey H. Brotman and James Sinegal. Both men had been involved in retail distribution since early years: Brotman was an attorney from an old retailing family in Seattle, and Sinegal had started working for Sol Price at Price Club and FedMart.

The first Costco location was in Seattle, Washington. The business size and model were similar to Price Club. When the companies combined, their annual sales guaranteed $16 billion in annual sales.

Costco Locations and Income

Costco Wholesale Corporation was the first company that grew from 0 to $3 billlion in sales in less than 6 years. As with every year the number of locations grew, for the August, 2009 the sales of the company equaled $ 71, 42 billion.

The Corporation focuses on selling goods at low prices. Their goods are bulk-packaged and are marketed to businesses and large families. The company saves cash by not stocking extra packing materials and bags: each customer should bring his own bag. Besides, here you won't find multiple brands, as Costco sells only essential things.

As for today, Costco has 600 warehouses all around the world. The largest number of locations is in the USA, and the smallest is in Australia:

  1. Australia: 3 warehouses - in Sydney, Canberra and Melbourne;
  2. Puerto Rico: 4 warehouses;
  3. South Korea: 7 warehouses;
  4. Taiwan: 8 warehouses;
  5. Japan: 13 warehouses;
  6. the United Kingdom: 22 warehouses;
  7. Mexico: 32 warehouses;
  8. Canada: 82 warehouses;
  9. the USA: 437 warehouses.

Today Costco Wholesale Corporation is regarded to as the 6th largest retailer in this country and the 7th in the world.

Costco Hours of Operation:

Monday - Friday
Business and Executive Members, 10 a.m. to 8:30 p.m.
Gold Star Members, 10 a.m. to 8:30 p.m.
All members, 9:30 a.m. to 6 p.m.
All members, 10 a.m. to 6 p.m

Holiday Hours.
New Year's Eve: 9:00 AM - 6:00 PM.
New Year's Day: Closed.
Labor Day: Closed.
Thanksgiving: Closed.
Christmas Eve: 9:00 AM - 5:00 PM.
Ch ristmas: Closed.

Costco Website:

There are a few numbers customers can choose from when attempting to contact Costco customer service.

  • Costco online member services: 1-800-955-2292
  • General member services: 1-800-774-2678
  • Costco travel customer service: 1-877-849-2730
  • Costco pharmacy: 1-800-607-6861
  • Business customer service: 1-800-788-9968

Costco Mailing Address

We found two addresses for customer service contact. One is a mailing address for the corporate office and the other is the physical address for the Costco corporate office building.

Costco Corporate

P.O. Box 34331

Seattle, WA 98124


Costco Corporate Physical Address

999 Lake Drive

Issaquah, WA 98027

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