Geographic Regions and Area Codes in Area Code 571

Area code 571 is located in Northern Virginia and includes several cities and counties. The primary cities covered by this area code are Arlington, Alexandria, Centreville, Dale City, and Reston. Additionally, it encompasses the independent cities of Fairfax, Falls Church, Manassas, and Manassas Park, as well as parts of Fauquier, Loudoun, and Prince William counties. This area code is an overlay for the 703 area code, meaning both area codes serve the same geographic region in Northern Virginia. Other area codes within Virginia include 276, 434, 540, 757, 804, 826, and 948.