If you prefer to shop in-store at Costco with a credit card, then make sure you have a Visa-backed credit card. Here are CNBC Select's picks for the top credit cards for shopping at Costco.

Best credit cards for groceries Best for cash back: Blue Cash Preferred® Card from American Express Best for travel rewards: American Express® Gold Card Best for online grocery shopping ...

Your Costco Shop Card will be emailed within two weeks after sign-up to qualifying members. A physical membership card is not required to shop online or receive your included gift card.

Take into account that Costco only accepts Visa credit cards in person, but you can pay with a few other credit cards online.