Last week, I posted about the richest U.S. states, as measured by the number of ultrahigh net-worth residents. The post generated a number of requests for more-precise data, since the ultrarich list was really just a list of the largest states. Many also wanted income
Right on cue come fresh data from the U.S. Census. The data, gathered from 2005 through 2009, show the top 10 counties as ranked by median income
The list follows below. But it reflects two interesting trends. First, high-income
and high-education households are 'clumping' into tighter and tighter geographies, according to a University of Maryland professor.
这个榜单请见下文。它反映了两个有趣的趋势：第一，高收入和高教育程度家庭在地理学上越来越集中了，这是马里兰大学(University of Maryland)一位教授的观点。
'The dispersion of income
is larger than it's ever been,' said Douglas Besharov, a professor at the University of Maryland's School of Public Policy told Bloomberg. 'There used to be a much wider spread of income
s within geographic areas than there is now. There's much more of a clumping together.'
The other trend is that the suburbs of Washington D.C. have replaced New York, California, Connecticut and New Jersey as home to the top-earning counties. Four of the highest earning areas in the U.S. are commuting towns to D.C., either in Virginia or Maryland.
Government, it seems, is catching up to finance
and technology as the largest generators of high income
Here is the list:
Top 10 U.S. Areas by Median Household Income (in 2009 inflation-adjusted dollars).
Falls Church city, Va.