The four richest counties in the United States, when measured by median household income, are all suburbs of Washington, D.C., according to newly released data from the Census Bureau.

They are Loudoun County, Va., where the median household income was $125,900 in 2015; Falls Church City, Va., where it was $122,092; Fairfax County, Va., where it was $112,844; and Howard County, Md., where it was $110,224.

The Census Bureau treats independent cities such as Falls Church, Va., as the equivalent of a county when calculating its median household income statistics.

Nationwide, the median household income in 2015 was $55,755, according to the Census Bureau. That means the local median household income in each of the nation’s three richest counties—all of which are Washington suburbs in Northern Virginia—are more than twice the national median household income.

Of the Top 20 richest counties in the nation, nine are suburbs of the city that serves as the seat of a federal government that in fiscal 2016 taxed away $3,266,774,000,000 from the American people, spent $3,854,100,000,000, and ran a $587,326,000,000 deficit.

Six of the Top 20 richest counties are in Northern Virginia. That gives Virginia twice as many counties in the Top 20 as any other state.

Maryland, New Jersey and California all put three counties on the Top 20 list. New York, New Mexico, Colorado, Tennessee and Georgia each had one.


Maryland’s three counties in the Top 20—Howard, Calvert and Montgomery—are all suburbs of Washington, D.C.

New Jersey’s three—Hunterdon, Morris and Somerset County—are in the suburbs and outer suburbs of New York City.

California’s three include two in Silicon Valley—Santa Clara and San Mateo—and Marin County, which sits just north of San Francisco on the other side of the Golden Gate Bridge.