National retailers and delivery apps have been racing to expand same-day grocery service as shoppers increasingly split purchases between in-store trips and app-based orders. Costco is the latest major chain to widen those options, rolling out broader nationwide delivery access through third-party platforms across its U.S. warehouse network. The change affects Costco members in 47 states, where the company operates its U.S. warehouse footprint.
Costco adds broader nationwide delivery through Uber Eats and DoorDash
Costco’s latest delivery change is a nationwide expansion of app-based ordering through Uber Eats and DoorDash, according to company announcements issued on September 16 and September 17. Uber said Costco delivery through Uber Eats has expanded to 47 states, up from 17, and that nearly 600 Costco locations are now available on the platform. DoorDash confirmed a day later that Costco is now live across the U.S. on its marketplace, with members able to order from all U.S. warehouses for same-day delivery.
The scale is significant because Costco has long limited its fastest delivery options mostly to Instacart-powered service and more selective third-party partnerships. The Associated Press reported that Costco has 639 U.S. stores in 47 states and that DoorDash will deliver groceries, household goods, and electronics from all of them. Uber’s announcement also said members can choose either on-demand or scheduled delivery, widening flexibility beyond a traditional warehouse shopping trip.
The new offers also come with membership-linked perks. Uber said eligible Costco members can get 50% off an annual Uber One membership for the first year, followed by 20% off in later years, while also allowing customers to link their Costco membership at checkout. DoorDash stated that members can shop more than 4,000 products through its app after linking an active Costco membership.
What the nationwide change means in U.S. markets
For shoppers across the United States, the confirmed change is broader access rather than a warehouse closure, product restriction, or pricing overhaul. Costco members in the 47 states where the company operates warehouses can now place same-day orders through DoorDash nationwide, while Uber Eats has expanded its Costco service from 17 states to 47. That means the change is national in scope, but availability still depends on a member’s local warehouse and delivery coverage area.
What is not yet fully public is a warehouse-by-warehouse list showing every individual market where product selection, delivery windows, or service fees may differ. The companies have not released a comprehensive public breakdown of affected cities by state, even though both said the launch covers Costco’s U.S. warehouse footprint. Uber noted that nearly 600 locations are now on its platform, while AP reported Costco operates 639 U.S. stores, a difference that suggests some rollout details may vary by location or timing.
The expansion also does not replace Costco’s existing delivery channels outright. Costco has continued to offer same-day delivery through Instacart for years, and its customer service pages still describe Instacart-powered same-day service alongside other grocery delivery options. For customers, the immediate impact is more checkout paths for the same warehouse membership rather than a confirmed end to older delivery arrangements.
Why Costco is widening delivery now and what customers should expect
The clearest reason for the move is demand for convenience and the growing competition among delivery platforms for grocery and general merchandise orders. DoorDash said Costco ranked among the most-searched retailers not yet available on its platform in the U.S., while Uber described the expansion as a way to give Costco members more ways to shop. AP also noted that DoorDash and Uber Eats have been expanding their grocery businesses in recent years, including deals with other major food retailers.
This broader rollout also fits Costco’s existing pattern of leaning on partners rather than building every delivery function alone. AP reported that Costco has worked with Instacart for nearly a decade, and Uber said its Costco partnership already extends beyond the U.S. to countries including Canada, Mexico, Japan, Taiwan, France, and Spain. DoorDash likewise said its global Costco relationship already included markets such as Australia, New Zealand, Sweden, Iceland, and Puerto Rico before the U.S. launch.
For customers, the practical takeaway is straightforward: Costco members should expect to see more same-day delivery options in the apps they may already use, with local warehouse inventory, timing, and fees still varying by market. Members will need to link an active Costco account to use these services, and nonmembers are being directed to buy memberships before ordering. As of mid-September 2026, Costco has not announced that these new app partnerships will replace its other delivery channels.