The four richest counties in the US, as measured by median household income, are in the Virginia and Maryland suburbs of Washington DC. Â We can thank the federal government for making us wealthy. Loudoun county is again on top with a median household income of $125,900 in 2015. Next was Falls Church City, Va., where median income was $122,092; Fairfax County, Va., where it was $112,844; and Howard County, Md., where it was $110,224.
According to the census bureau, nationwide the average median household income in 2015 was $55,755. That means the DC suburbs average more than twice the national average.
Of the top 20 richest counties in the nation, nine are Washington DC suburbs, with 6 of those being in Northern Virginia. From CNSnews.com:
Does being richer make the citizens happier? Â In many instances the answer is yes. Loudoun is both the richest county in the country and the happiest, from the Washingtonian.com: