Courtesy of Citybizlist โ€“ Maryland lays claim to five of Americaโ€™s 15 richest counties, led by Howard County with a median household income of $101,771, according to a report by The Street.

The Street looked at Census Bureau data from 2010, selecting the 15 counties with the highest median household income โ€“ boasting a combined median income nearly double the national average of $49,445.

Americanโ€™s richest county is Loudon County, Va., with a $119,540 median income.

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Here is what The Street said about the five counties in Maryland that made the list.

3rd Richest: Howard County, Md.

Median Household Income: $101,771

With an astounding 58.3% of residents holding a bachelorโ€™s degree or higher, Howard County shows that higher education can pay. One of only three counties that have a six-figure median household income in the U.S., Howard is located between Baltimore and Washington, D.C., attracting the extremely affluent. The median value of owner-occupied homes in the county is $456,200.

12th Richest: Montgomery County, Md.

Median Household Income: $89,155

With almost 1 million residents, Montgomery is one of the largest counties on our list. Itโ€™s no surprise that this county is so large, since itโ€™s situated just north of Washington, D.C. and only an hour from Baltimore.

More than half of the countyโ€™s population has a bachelorโ€™s degree or higher and the home values in this area are astounding. The median value of owner-occupied homes was $482,900 from 2006-2010.

13th Richest: Calvert County, Md.

Median Household Income: $88,862

Calvert lies just across the Patuxent River from St. Maryโ€™s County, which holds the 14th spot on our list. The median household income in this county didnโ€™t see the same boom that St. Maryโ€™s saw year over year, though. Its income remained essentially flat, decreasing less than 1% from 2009.

Veterans make up roughly 10% of the population, according to the most recent census data.

Read the rest of the story at citybizlist.com