We’ve divided Fairfax County into three parts to more easily understand the region. Northern Fairfax County is real estate north of Rt. 66, a major commuter artery. Northern Fairfax County borders Arlington County and Falls Church. Great Falls and Mclean are home to some of the most expensive and most sought-after properties in Northern Virginia. Chantilly and Centreville are commuter communities. Vienna the last stop on the Orange Line Metro as just as Reston is the last stop on the Silver Line. Tysons Corner includes some of the most urbanized parts of Fairfax County but much of Northern Fairfax County is green with suburbs, parks and lawns.