Five Guys Costa Mesa Square 11:00 AM - 9:00 PM 11:00 AM - 9:00 PM 11:00 AM - 9:00 PM 11:00 AM - 9:00 PM 11:00 AM - 9:00 PM 11:00 AM - 9:00 PM 11:00 AM - 9:00 PM3030 Harbor Blvd. Costa Mesa, CA 92626 USGet DirectionsVisit Store Website