Loudoun County (pronounced “LOUD-un”) is a county located in Northern Virginia, and is part of the Washington Metropolitan Area. As of July 2006, the county is estimated to be home to 268,817 people, a 58% increase over the 2000 figure of 169,599. That increase makes the county the fastest growing in the United States during that period. As of 2007, the town of Leesburg had been county seat for 249 of the last 250 years.

Fairfax County is a county in Northern Virginia, in the United States. As of April 2009[update], the estimated population of the county is 1,037,605[1] making it by far the most populous jurisdiction in the Commonwealth of Virginia, with 13.1% of Virginia’s population, and the most populous jurisdiction in the Washington Metropolitan Area. Fairfax was the first county in the United States to reach a six-figure median household income, and has the second-highest median household income of any county with a population of 250,000 or more in the United States after neighboring Loudoun County.[2]

Arlington VA Real Estate is the topic of water cooler chat in Northern Virginia. It’s a very attractive place to live because of the convenience to Washington DC, the orange line metro, and the possibility of going green and ditching your car. When Northern Virginia was at the peak of the market in 2003 and 2004, Arlington VA real estate was the place to buy. When the real estate outlook was not too promising in 2006 and 2007, Arlington VA real estate was one of the only markets to actually increase its home sales.