Costco Executive Membership 2026 is the most commercially powerful consumer demographic in American retail — and understanding it in precise detail is one of the most important things any brand pursuing a Costco Roadshow can do before setting up their first booth. The statistic that defines this reality is striking: Executive Members represent less than 49 percent of Costco's total paid membership base, yet they account for approximately 75 percent of Costco's total net sales