There are 3,033 counties in the United States. Which 10 are the richest in terms of median household income? Not surprisingly, those near major economic centers rank high. In a study based on household income estimates from the Census Bureau's American Community Survey, Loudoun County, Virginia captures the number one spot in America's Richest Counties. Loudoun County is a Washington, D.C. suburb and is home to Dulles International Airport, as well as a well-educated workforce. The … [Read more...]