"Numerator found that Costco's typical shopper in the US is an Asian American woman between 35 and 44 years old who is married and living in a city in the Pacific Northwest. (Costco was founded in Seattle and is based in Washington.) She typically has a four-year degree or higher level of education and earns more than $125,000 a year."
I'm not sure whether the income of the "typical shopper" was defined based on a median or mode, so there could well be a large variance of customers with a lower socioeconomic status. A separate article by Investopedia [1] also asserts that Costco mostly opens stores in affluent suburban areas, and originally targeted college-educated and financially wealthier customers.
So, Costco's customers are likely skewed to have a higher socioeconomic status, based on the location of most of its stores in wealthier suburban areas and findings from an analytics report (with some skepticism towards the article about the report, as the raw data and methods weren't shared, as far as I could see).
[0] https://www.businessinsider.com/typical-costco-shopper-demog...
[1] https://www.investopedia.com/articles/insights/061516/whats-...
What the heck does that mean? Am I supposed to believe that the most common category of people are that category, or that those attributes are the more common ones? I'm positive I see an almost even split of male/female when I go to Costco. Otherwise, that wording is jacked by any metric.
This is obvious simply by searching for Costcos on a map. Or the fact that any time your total is less than $100, the cashier and the customer joke about how lucky and rare the sub $100 receipt is.
https://www.businessinsider.com/typical-walmart-shopper-demo...