The Washington Post posted a blog entry Tuesday morning with a map looking at which U.S. counties have the highest percentage of residents with college degrees.

The map shows concentrations of highly educated populations around Denver, Boston, Philadelphia and San Francisco, with a comparative lack of degrees in the rural South.

We wanted to take a closer look at Dane County and Wisconsin, so we grabbed similar data from the U.S. Census Bureau's American Community Survey, which reports on the educational attainment of residents age 25 and older.

Considering it's the home of Wisconsin's flagship state university, Dane County has the highest percentage of residents with at least a bachelor's degree in the state, 45.8 percent.

That puts Dane County in the top 2 percent of U.S. counties.

It trails Ozaukee and Waukesha counties, however, in terms of percentage of residents with at least a high school diploma or equivalent.