I have a Costco store near my home and I was thinking of applying for their credit card. My credit is not the best, but I heard store cards are easier to get than traditional credit cards. What kind of credit do I need to be approved for their card?

Store credit cards are not easier to get than traditional credit cards. The important factor is when you apply for a card make sure you apply for one that has criteria that fits your creditworthiness. Store credit cards will generally not approve those with bad credit. If you have bad credit or your credit is on the borderline of bad and fair, it is not a good idea to apply for this card because a hard pull can further lower your credit score. Not to mention they do not have a basic store card. Both of their cards are branded by Visa. This could set the bar slightly higher. Instead apply for a card that you know you will be approved for that caters to your type of credit.