Richest Counties in America 2021 | America's Richest Counties, Wealthiest Counties, Richest Counties, Highest Income Counties

Richest Counties in America

May 2021

**An entrance to Brambleton, one of Loudoun County's largest and wealthiest master planned communities (credit: BramLife)**

America's richest counties are mostly clustered around just three major cities: Washington, DC, San Francisco and New York, which also have the highest cost of living. 8 of the top 20 richest counties are in the DC area (including the top 2), 4 are in the New York area, and 4 are in the Bay Area.

And once again Loudoun County, Virginia takes the top spot with the highest median household income by far and second lowest poverty rate. Loudoun County lies about 25 miles west of Washington, DC and is home to Washington-Dulles International Airport and the largest concentration of internet data centers in the world. Its strategic location and high paying jobs at private companies like Verizon, Northrop Grumman and Raytheon have made it not only the wealthiest but one of the fastest growing counties in America for the last 3 decades.

	County	Median Household Income	Poverty Rate	Population	Metro Area
1.	Loudoun County, VA	$142,299	3.1%	413,538	Washington, DC
2.	Fairfax County, VA	$124,831	6%	1,147,532	Washington, DC
3.	Santa Clara County, CA	$124,055	8.2%	1,927,852	San Francisco Bay
4.	San Mateo County, CA	$122,641	6.1%	766,573	San Francisco Bay
5.	Los Alamos County, NM	$121,324	3.5%	19,369	Santa Fe
6.	Howard County, MD	$121,161	5%	325,690	Washington/Baltimore
7.	Arlington County, VA	$120,071	7.6%	236,842	Washington, DC
8.	Douglas County, CO	$119,730	2.7%	351,154	Denver
9.	Nassau County, NY	$116,100	5.6%	1,356,924	New York City
10.	Morris County, NJ	$115,527	5.3%	491,845	New York City
11.	Hunterdon County, NJ	$115,379	4%	124,371	New York City
12.	Marin County, CA	$115,246	6.9%	258,826	San Francisco Bay
13.	Somerset County, NJ	$113,611	5.4%	328,934	New York City
14.	Williamson County, TN	$112,962	4.3%	238,412	Nashville
15.	San Francisco County, CA	$112,449	9.5%	881,549	San Francisco Bay
16.	Stafford County, VA	$112,449	5.4%	152,882	Washington, DC
17.	Calvert County, MD	$109,313	5.7%	92,525	Washington, DC
18.	Montgomery County, MD	$108,820	7.3%	1,050,688	Washington, DC
19.	Forsyth County, GA	$107,218	4.5%	244,252	Atlanta
20.	Prince William County, VA	$107,132	6.1%	470,335	Washington, DC
	National Average	$62,843	10.5%	328,239,523

Statistics represent the latest (2019) US Census Bureau estimates.