Why I've never been in a WalMart

I always thought that America was full of Wal-Marts. And despite having been here about 18 months, I've never been in one. That's not for principled reasons (like the fact that Wal-Mart is the country's leading seller of guns) , it's because I've almost never seen one. I saw one for the first time today (which is why I mention it), but didn't go in.

Then I get home and see these graphs. It turns out (if you're too lazy to click the link) that California (along with Massachusetts) has fewer Wal-Marts per person than all the other states.