The average person has between 2 to 3 credit cards and anymore than 3 credit cards would not be considered average.
My sister has 5 credit cards ranging from store credit cards to capital one and other credit card companies that I can't remember exactly right now who they are.
She is in debt though and barely making the payments on most of those credit cards.
I have only 2 credit cards and one of them is Capital One credit card and the other is a credit card for Walmart.
That is enough credit cards for me and I only use those credit cards when I know I can pay the balance off in full to keep the balance down and build my credit.