costco opening line
Customers at the membership desk of an early Costco warehouse.
  • Costco opened its first location in Seattle in 1983, building off Price Club's warehouse format.
  • Today's company is the product of a 1993 merger between Costco and Price Club, which opened in 1976.
  • Costco provided Business Insider with historical photos of the chain's inaugural warehouse. 

Costco is a staple of the big-box-store landscape. Since its beginning in 1983, it has attracted a devoted flock of members thanks to its low prices and bulk sizes.

But the wholesale retailer's origin story is a bit complicated.