America's 5 richest counties

Just as counties are made up of more than towns and cities, the income of county residents depends on more than the local businesses. What follows are the five richest counties in America, according to the Average Income by County report from the Census Bureau, which includes the average annual household income from 2006-2010.

These counties don’t just contain Fortune 500 business headquarters (though some of them do), and they're not just appealing vacation destinations (although two are) and it’s not just the acres of upscale retail that at least one county has that’s providing all the jobs and high incomes. In many of the following cases, the high income of a county is directly tied to the nearest commutable city.  Although the workplace is becoming ever more virtual and working remotely has never been more possible, commuting to major metropolitan centers is clearly still a factor driving local economies.

See full story: America's 10 Richest Counties

5. Hunterdon County, NJ
Average income:

Hunterdon County is located in the northwestern part of New Jersey between this list’s No. 9 county, Morris, to the northeast, and No. 7, Somerset County, to the east. It’s more rural than its Central Jersey neighbors and is a destination for fishing and hunting white tail deer. In Hunterdon, commuters are split between New York City and Philadelphia.

4. Fairfax County, Va.
Average income:

Fairfax is a bedroom community to Washington, DC, as well as home to the CIA such companies as Volkswagen, Capital One and Sallie Mae.  In addition, the county has three large malls in the unincorporated census-designated place of Tysons Corner: Tysons Corner Center, Tysons Galleria and Fairfax Square. Tysons Corner was the 12 th -largest employment center in the country in 2008, the New York Times reported.

3. Loudoun County, Va.
Average income:

Historic Loudoun County, another suburb of Washington, DC, is the neighbor to this list’s No. 4 county, Fairfax. However, in another 2010 ranking from the United States Department of Agriculture Economic Research Service, Loudoun County was the highest-income county in the U.S. for 2010 (with Fairfax still coming in at No. 4 on that ranking). Loudoun is the site of numerous vineyards and the headquarters for Verizon Business, Telos Corporation, MCI and others.

2. Pitkin County, Colo.
Average income:

Pitkin County — a mountainous area in the center of  Colorado with fewer than 20,000 residents — might not ring a bell. But considering that Pitkin’s county seat is the upscale ski resort city of Aspen, it all makes sense that this is the No. 2 wealthiest county in the U.S. The many luxury ski chalets of Aspen earned it the distinction of being the most expensive real estate market in America, with average home prices at $6 million in 2010.

1. Nantucket County, Mass.
Average income:

Let’s just say if all the old men in Nantucket kept all their cash in a bucket, they would need a lot of buckets. The island of Nantucket (along with the two smaller islands making up Nantucket County), located south of Cape Cod off the coast of Massachusetts, is an upscale vacation destination and summer colony. The entire island is an historic district, with many pre-Civil War structures as well as a cobblestone Main Street and the oldest functioning windmill in the country. Tommy Hilfiger, John Kerry and Teresa Heinz, and Jerry Stiller and Anne Meara all have summer homes on Nantucket.

See full story: America's 10 Richest Counties

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