The Costco new locations 2026 fall wave is underway — with 10 new U.S. warehouses scheduled to open across October and November 2026, bringing the warehouse club's institutional pricing, $4.99 rotisserie chicken, $1.50 hot dog, and member-exclusive services to communities that have been driving 30 to 45 minutes to the nearest Costco. Costco is planning to open 10 new stores during October and November 2026. The new branches will be distributed across nine states and are part