This is what the mortgage delinquency rate looks like: (darker colors are worse)
The map shows the % of people with bank cards that are 60 days past due and mortgages that are 90% past due. For example you can hover over Southern Nevada and see that Clark county (Las Vegas) has a 6% delinquency rate on mortgages and then compare that to King county (Seattle) in Washington state and see that their delinquency rate is 1%.