at what time does costco open.
Costco Pharmacy Hours. The Costco Pharmacy hours are the same as the normal Costco Warehouse hours, see above. The Costco Home Delivery service is open 24/7. The Costco Home Delivery Pharmacy is available 24/7 to refill prescriptions, order new prescriptions and check prescription status. Monday- Friday: 5:00 a.m. to 7:00 p.m. PT.