5 Richest Counties In The U.S.A

#5 Arlington County, Virginia

Median HHI: $112,138
Population: 229,534

#4 Falls Church City, Virginia

Median HHI: $114,795
Population: 13,843

#3 Howard County, Maryland

Median HHI: $115,576
Population: 312,495

#2 Fairfax County, Virginia

Median HHI: $117,515
Population: 1.1 million

#1 Loudoun County, Virginia

Median HHI: $129,588
Population: 374,558