Number of credit cards: FICO High Achievers have an average of 4 to 5 credit cards (including open and closed cards, bank cards and department store cards).This has got to come from the days of "Hazel" and Mr. and Mrs. B. Americans use credit very differently these days. I make money off my cards, so although I'm going to start cutting them back, there is no way I would confine myself to 5 cards over my lifetime. (I'd need a time machine to do this, as I'm already beyond this point!) My 80-year-old mother is very conservative financially, but she has had store cards since the fifties, and she probably has two entire Visas as well, so even she doesn't fit this. IMO, this is one of those dinosaur statistics that needs to be re-examined and updated.