Wealth is flowing through the suburbs of our nation's capital.
Loudoun is followed on the list by Fairfax County, Va. (2); and Howard County, Md. (3). Also among the richest are Arlington County, Va. (9); Montgomery County, Md. (10); Calvert County, Md. (13); Prince William County, Va. (14); Charles County, Md. (21); and Stafford County, Va. (12); as well as the Virginia cities of Fairfax (6) and Alexandria (23).
Now the big question: Why are those areas more well off while others continue to struggle?
The federal government generates a wealth of jobs, keeping unemployment in the D.C. metro area at a low 6.2% (the national average is still near 10% nationally).
There's something else to be proud of: 19 of the 25 richest counties in the country are on the East Coast.
Take that, glitzy California!