WinCo Foods is a privately held, employee-owned American supermarket chain founded in 1967 and based in Boise, Idaho. Known for a "no-frills" warehouse-style, low-price approach, it operates over 140 stores in 10 states. WinCo, which stands for "Winning Company," operates as an ESOP (Employee Stock Ownership Plan) and does not accept credit cards to maintain low prices.