The richest counties in the U.S. are found about where one would expect. The metro areas of Washington, D.C. dominate the list, and rich counties from around the country are represented, including Colorado, Ohio and Tennessee.
Metro areas from New York City and the San Francisco Bay Area are notably absent. Take a look at the 10 Most Expensive Places to Live to see the off-the-charts cost of living in these areas. That factor may have kept them off the list.
But as is usually the case with such things, the richest counties in the U.S. also tend to be the most expensive counties. So, although residents of the richest counties might enjoy the highest incomes, they also often bear the highest costs of living…