Who Is the Average Costco Customer? (COST)

Ask people who shop at Costco Wholesale Corp. (COST) store if they like it and you will probably hear exuberant praise, along with a list of the great deals they scored on their last visit. More than 86 million people pay an annual membership fee just to get in the door, with fewer than 10% each year deciding the experience isn’t worth the price of renewing.

To some, Costco shopping is close to a religious experience, which…