Here's Where You Can Find The Oldest Costco In The US - Tasting Table
Briefly

The oldest Costco in the United States, opened on September 15, 1983, is located in Seattle, Washington. Known as Warehouse #1, it was a commercial hit, becoming the first company to reach $3 billion in sales within six years. Although the original building has been replaced, some remnants like a wall and window of the first store remain, featuring a historical display. This Costco operates standard store amenities, including a pharmacy and a food court, and maintains regular hours throughout the week.
Costco's oldest operational warehouse, located in Seattle, Washington, opened on September 15, 1983, marking the beginning of its remarkable journey in retail.
This location quickly became a commercial success, achieving sales of $3 billion in under six years, setting a remarkable industry benchmark.
While the original Costco store structure has been replaced, the current site retains part of the original wall and history displays to honor its legacy.
With open hours spanning weekdays to Sundays, the Seattle store maintains the typical Costco amenities, such as a pharmacy, gas station, and food court.
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