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You live in nation's richest counties

When it comes to median household income, Loudoun County takes the No. 1 spot, followed by Fairfax County. Five other area counties also make the list.

Tags: Charles County , Calvert County , Loudoun County , Arlington County , fairfax county , Montgomery County , Howard County , Newsweek , Mark Segraves , Gary Emerling , richest counties ,

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