Costco Wholesale Corporation Headquarters: Address, Location & Contact Details

Costco Wholesale Corporation is one of the world’s largest membership-based warehouse retailers. The company serves millions of members through its warehouses, website, and various business services. Shoppers can find groceries, electronics, furniture, appliances, clothing, household products, and many other everyday essentials at Costco.

For customers, suppliers, job seekers, investors, and business researchers, knowing the location of the Costco Wholesale Corporation headquarters can be helpful. The company’s corporate headquarters is located in Issaquah, Washington, near the Seattle metropolitan area.

This guide covers the Costco headquarters address, location, phone number, mailing address, corporate functions, and other useful information. In addition, it explains the difference between Costco’s headquarters and its local warehouse locations.

Where Is the Costco Wholesale Corporation Headquarters?

The Costco Wholesale Corporation headquarters is located in Issaquah, Washington, United States.

Costco Headquarters Address

Costco Wholesale Corporation
999 Lake Drive
Issaquah, WA 98027
United States

The headquarters is situated in the Seattle metropolitan area. Issaquah is located east of Seattle and is surrounded by the natural landscape of the Cascade foothills.

Because Costco operates a large international retail network, its corporate headquarters plays an important role in coordinating company-wide operations. Various corporate departments work together to support Costco’s warehouses, online business, employees, suppliers, and members.

Costco Headquarters Location

The Costco corporate office is located at 999 Lake Drive, Issaquah, Washington 98027.

This location is different from a typical Costco shopping warehouse. A corporate headquarters primarily supports management and business operations. In contrast, warehouses are designed for customers who want to shop, use services, or handle membership-related needs.

Therefore, people looking for the Costco headquarters should make sure they have the correct address before traveling to Issaquah.

Costco Corporate Office Phone Number

The commonly listed phone number for Costco’s corporate office is:

425-313-8100

This number is associated with Costco’s corporate office in Issaquah.

However, the corporate office is not necessarily the fastest option for everyday customer questions. For example, someone asking about a membership renewal, online order, return, or warehouse service may receive better assistance through Costco’s dedicated customer service channels.

As a result, it is important to choose the right contact method based on the reason for your inquiry.

Costco Corporate Mailing Address

Costco also provides a corporate mailing address:

Costco Wholesale Corporation
P.O. Box 34331
Seattle, WA 98124
United States

This mailing address can be useful for formal correspondence. Nevertheless, customers should verify the appropriate department and current mailing instructions before sending important documents.

For business-related communication, identifying the correct department can help prevent delays.

Costco Headquarters vs. Costco Warehouse

One of the most common points of confusion involves the difference between the Costco Wholesale Corporation headquarters and a Costco warehouse.

Although both may be located in the same city, they serve different purposes.

The headquarters is a corporate office. It supports company management, administration, finance, technology, merchandising, human resources, legal operations, and other business functions.

A warehouse, on the other hand, is a retail location. Members visit warehouses to purchase products, use selected services, pick up orders, and handle certain membership needs.

For example, Costco has a warehouse in Issaquah at:

1801 10th Ave NW
Issaquah, WA 98027-5384

That location is a Costco warehouse and should not be confused with the corporate headquarters at 999 Lake Drive.

Therefore, if your goal is shopping or getting help with a local warehouse issue, the warehouse address is more relevant.

What Does Costco Headquarters Do?

A company with a large international retail network requires many departments to coordinate daily operations. Costco’s corporate teams help manage and support activities across its business.

Major corporate functions can include:

• Executive management
• Finance and accounting
• Human resources
• Information technology
• Legal services
• Marketing
• Merchandising
• Supply chain management
• Real estate
• E-commerce
• Membership operations
• Vendor relationships
• Business planning

For instance, merchandising teams help determine which products Costco sells. Meanwhile, supply chain teams help coordinate the movement of products from suppliers to warehouses.

Similarly, technology teams support Costco’s digital services and internal systems. Finance departments handle financial planning and reporting, while human resources supports employees and workplace programs.

Together, these functions allow Costco warehouses and online operations to work as part of one larger organization.

About Costco Wholesale Corporation

Costco Wholesale Corporation operates a membership-based retail business. Customers generally need a Costco membership to shop at its warehouses and access many of its services.

The company offers a broad selection of merchandise. These products include food, beverages, electronics, appliances, furniture, clothing, household supplies, health and beauty products, automotive items, and more.

In addition, Costco operates services that may vary by location. These can include pharmacy, optical, hearing aid, tire, food court, and other member-focused services.

Costco also operates an online shopping platform. Consequently, customers can purchase many products without visiting a physical warehouse.

The combination of physical warehouses and online shopping allows Costco to serve members through multiple channels.

Why Is Costco Headquarters in Issaquah?

Issaquah has a strong connection to Costco’s corporate history. The city is located east of Seattle and provides access to the wider Seattle metropolitan region.

Moreover, the area offers access to transportation routes, a large workforce, and a well-established business environment.

Costco’s corporate presence has also made Issaquah closely associated with the company. Although Costco has grown into an international retailer, its corporate headquarters remains in Washington State.

The Issaquah location therefore represents an important part of Costco’s corporate identity.

How to Contact Costco

The best way to contact Costco depends on what you need.

Membership Questions

If you have a question about membership, renewal, account information, or membership benefits, Costco’s customer service resources are generally the appropriate starting point.

For example, a membership issue may be resolved more quickly through customer support than by contacting the corporate headquarters.

Online Orders

Customers with questions about Costco.com orders, deliveries, online returns, or digital purchases should use Costco’s online customer service options.

This approach is especially useful because online orders may be handled by teams that are separate from the corporate office.

Warehouse Questions

If your question concerns a particular Costco warehouse, contacting that warehouse directly can be more useful.

You may need information about warehouse hours, local services, product availability, tire services, pharmacy services, or other location-specific matters.

Corporate or Business Matters

Suppliers, vendors, investors, business partners, and other organizations may need corporate contact information.

In these situations, the Costco headquarters address can be useful for formal business correspondence. However, contacting the correct corporate department remains important.

Can Customers Visit Costco Headquarters?

The Costco corporate headquarters is primarily a business office rather than a retail shopping location.

Consequently, customers should not visit the headquarters expecting to shop for products or receive the same services available at a Costco warehouse.

Instead, shoppers should visit their nearest Costco warehouse. Likewise, membership and customer service questions should generally be handled through the appropriate customer service channels.

If you need to send corporate correspondence, the headquarters or official mailing address may be more appropriate.

Why Do People Search for Costco Headquarters?

There are several reasons people search for the Costco Wholesale Corporation Headquarters.

Business Communication

Suppliers and business partners may need the corporate address for official correspondence. In such cases, accurate address information is important.

Employment Opportunities

Job seekers may search for Costco’s corporate office when exploring career opportunities outside individual warehouse positions.

Corporate jobs can involve areas such as technology, finance, marketing, human resources, merchandising, and administration.

Business Research

Students, journalists, researchers, and business professionals may need the headquarters address while researching Costco Wholesale Corporation.

The location can also help people understand where the company’s corporate operations are based.

Customer Escalation

Some customers search for the corporate headquarters when they have a problem that they believe requires additional attention.

Even so, most regular customer service issues can usually be handled through Costco’s official customer support channels or the relevant warehouse.

General Information

Others simply want to know where Costco is headquartered.

Since Costco operates in many countries, identifying its corporate headquarters provides a useful point of reference when researching the company.

Costco’s Global Retail Operations

Costco has expanded far beyond its original warehouse retail footprint. Today, the company operates a large network of warehouses and serves members through both physical stores and digital channels.

As the company grows, corporate coordination becomes increasingly important. Teams working from corporate offices help support purchasing, logistics, technology, finance, employee operations, and other functions.

Furthermore, Costco’s membership model creates a strong connection between its warehouses, digital services, and corporate operations.

This structure allows the company to maintain a consistent business model while serving customers across different markets.

Important Costco Addresses at a Glance

For convenience, here are the key addresses discussed in this guide:

Costco Corporate Headquarters
999 Lake Drive
Issaquah, WA 98027
United States

Corporate Mailing Address
P.O. Box 34331
Seattle, WA 98124
United States

Issaquah Costco Warehouse
1801 10th Ave NW
Issaquah, WA 98027-5384
United States

These addresses serve different purposes. Therefore, make sure you use the appropriate one for your specific need.

Frequently Asked Questions

What is the Costco Wholesale Corporation Headquarters address?

The Costco corporate headquarters is located at 999 Lake Drive, Issaquah, WA 98027, United States.

What is the Costco headquarters phone number?

The commonly listed corporate office phone number is 425-313-8100.

Is Costco headquarters in Seattle?

No. Costco’s corporate headquarters is located in Issaquah, Washington. However, the company also has a Seattle mailing address.

Is the Issaquah Costco warehouse the corporate headquarters?

No. The Issaquah Costco warehouse at 1801 10th Ave NW is a retail warehouse. The corporate headquarters is located at 999 Lake Drive.

Can customers shop at Costco headquarters?

No. The headquarters is a corporate office, not a standard retail warehouse. Customers should visit a Costco warehouse for shopping.

Where is Costco based?

Costco Wholesale Corporation is headquartered in Issaquah, Washington, United States.

What is Costco’s corporate mailing address?

The corporate mailing address is commonly listed as P.O. Box 34331, Seattle, WA 98124.

How can I contact Costco about a membership problem?

For membership issues, it is generally better to use Costco’s official customer service resources or contact the relevant warehouse rather than visiting the corporate headquarters.

Can I send business correspondence to Costco headquarters?

Corporate correspondence may be directed to the appropriate Costco corporate department. However, businesses should verify the correct contact information before sending important documents.

Final Thoughts

The Costco Wholesale Corporation Headquarters is located at 999 Lake Drive in Issaquah, Washington. This corporate office supports the company’s broad business operations and helps coordinate activities across its warehouse and online network.

At the same time, the headquarters should not be confused with a Costco warehouse. The corporate office handles business functions, while warehouses provide direct retail services to members.

For shopping, returns, membership assistance, and local services, customers should generally contact the appropriate Costco warehouse or customer service team. On the other hand, suppliers, business partners, researchers, and other organizations may need the corporate address for formal communication.

Knowing the correct Costco headquarters address and understanding the difference between a corporate office and a warehouse can save time and help you reach the right part of the company.

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