The Pew Charitable Trust has released an interesting map on the “unbanked”: American households that eschew the formal banking system. It shows some pretty big geographic variation.

The standout here is Mississippi, where more than 16 percent of the residents don’t use banks, the highest rate in the nation. What factors increase “unbanked” rates? Pew’s researchers told me their study didn’t dig that deep, but they did point me to other research suggesting that banking fees are often a culprit."

Read the full article at washingtonpost.com.