When does Costco open?

It opens at 11:00

Edit: Most Costco's do not enforce the Executive, Gold Star and Business hours. I have yet to go to one that does.

Hours are as following:

M-F Opens at 10:00 AM and closes at 8:30 PM

Sat Opens at 9:30 AM and closes at 6:00 PM

Sun Opens at 10:00 AM and closes at 6:00 PM

All departments, with exception of Gas Station, some Hearing Aid depts, and Pharmacy, share the same opening hours.

Pharmacy - Opens when store opens, closes at 7 PM. Pharmacy is CLOSED on Sundays.

Gas Station - Opens well before the store at 6 AM, and closes an hour after the warehouse.

Hearing Aid - Varies for different locations.

Holiday Hours:

Costco is closed 7 days out of the year.

- New Year's Day

- Easter

- Memorial Day

- Independence Day

- Labor Day

- Thanksgiving

- Christmas

Costco closes early on the following days:

- Christmas Eve - 5 PM

- New Years Eve - 5PM

During the Christmas season, Costco is open until 7 PM on Saturdays. On the day after Thanksgiving, Costco opens an hour earlier, 9 AM.