Costco

Business (ask staff) · Costco

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200 Costco Way, St. Peters, MO 63376-4385

Mo-Fr 10:00-20:30; Sa 09:30-18:00; Su 10:00-18:00; Dec 23 09:30-19:00; Dec 24 09:00-17:00; Dec 25 off; Dec 31 09:00-18:00; Jan 01 off

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Last updated November 5, 2026.