Costco Expands US Delivery Reach with Nationwide DoorDash Rollout

Costco Wholesale (NASDAQ: COST) this week unveiled a significant expansion of its long-standing partnership with DoorDash. On September 17, 2026, Costco made its full U.S. inventory—from groceries and household essentials to electronics and Kirkland Signature items—available for same‑day delivery via the DoorDash Marketplace at all U.S. warehouse locations.

The announcement follows prior international availability of the service in regions like Australia, New Zealand, Sweden, Iceland and Puerto Rico. The new U.S. rollout lets Costco members access more than 4,000 products through the DoorDash app, where they can link an existing membership or, if needed, sign up for a new one to complete orders. Consumers without memberships are prompted to purchase through Costco.com before returning to DoorDash to link the new account.

Mike Goldblatt, Vice President of Enterprise Partnerships at DoorDash, noted that this availability fulfills a long-standing member demand for flexibility in shopping, combining Costco’s “quality, value and selection” with DoorDash’s delivery capabilities.

Why This Matters

This U.S. launch marks a major step in Costco’s omni‑channel strategy, offering members an enhanced, convenient option to access warehouse prices and selections without a trip to physical stores. It also positions Costco alongside eight of North America’s ten largest food retailers now partnered with DoorDash, expanding its reach in the online-to-offline retail arena.

Potential Implications for COST Stock

While the stock market’s reaction isn’t disclosed in available announcements, the development could broaden Costco’s digital footprint and drive incremental membership engagement. Investors should watch for upcoming data points such as same‑club sales trends, digital adoption metrics, and membership renewal behavior when Costco reports its fiscal Q4 earnings—all scheduled for September 24, 2026.

Separately, Costco’s monthly sales metrics—including the August update released earlier this month—will provide insight into how this new delivery offering may influence revenue mix and shopping patterns going forward.