571 Area Code 🌍☎️

The most populous cities in area code 571 are: Arlington, Herndon, Woodbridge, Manassas, and Leesburg.

Other cities in the 571 area code include: Dunn Loring, Vienna, Lorton, Triangle, Mc Lean, Haymarket, Centreville, Aldie, Alexandria, Sterling, Nokesville, Falls Church, Waterford, Ashburn, Reston, Springfield, Merrifield, Fairfax, and Oakton.

Arlington County is a county in the Commonwealth of Virginia. It is coterminous with the U.S. Census Bureau - census-designated place of Arlington, which is the second-largest principal city of the Washington metropolitan area. As a result, the county is often referred to in the region simply as " Arlington " or " Arlington, Virginia ". In 2015, the county's population was estimated at 229,164, which would make it the fourth-largest city in the Commonwealth if it were incorporated as such.The land that became Arlington was originally donated by Virginia to the United States government to form part of the new federal capital district of Columbia. On February 27, 1801, a year after moving from the temporary National Capital at Philadelphia to the City of Washington, the United States Congress organized the area as a subdivision of the District named Alexandria County. In 1846, Congress returned the land southwest of the Potomac River donated by Virginia due to issues involving Congressional representation and the abolition of slavery. The General Assembly of Virginia changed the county's name to Arlington in 1920 to avoid confusion with the adjacent City of Alexandria.The county is situated in Northern Virginia on the south bank of the Potomac River directly across from Washington, D.C. Arlington is also bordered by Fairfax County and City of Falls Church to the northwest, west and southwest, and the City of Alexandria to the southeast. With a land area of 26 square miles (67 km 2), Arlington is the geographically smallest self-governing county in the United States, and due to state law regarding population density, has no incorporated towns within its borders. As of the 2010 census, the population was 207,627. Due to the county's proximity to downtown Washington, D.C., Arlington is the headquarters for many departments and agencies of the federal government of the United States, including the Department of Defense (DoD) at the Pentagon, Drug Enforcement Administration, Transportation Security Administration (TSA), and Defense Advanced Research Projects Agency (DARPA). It is also home to Ronald Reagan Washington National Airport. The many federal agencies, government contractors, and service industries contribute to Arlington's stable economy. Arlington is also the location of national memorials and museums, including Arlington National Cemetery, the Pentagon Memorial, the Marine Corps War Memorial, and the United States Air Force Memorial.It is the highest-income county in the United States by median family income, though it has the highest concentration of singles in the region. According to a 2016 study by Bankrate.com, Arlington is the best place to retire, with nearby Alexandria coming in at second place. Criteria of the study included cost of living, rates of violent and property crimes, walkability, health care quality, state and local tax rates, weather, local culture and well-being for senior citizens.

Herndon is a town in Fairfax County, Virginia, in the Washington, D.C. metropolitan area of the United States. The population was 23,292 at the 2010 census, which makes it the largest of three incorporated towns in the county.

Woodbridge is a census-designated place (CDP) in Prince William County, Virginia, United States, located 20 miles (32 km) south of Washington, D.C. Bounded by the Occoquan and Potomac rivers, Woodbridge Magisterial District had 54,275 residents at the 2010 census. The Woodbridge census-designated place comprises just one portion of the magisterial district and had a population of 4,055 in the 2010 census. The census-designated place consists solely of the section north of Occoquan Road and Dawson Beach Road, and east of Interstate 95.Woodbridge offers a variety of amenities for residents and visitors, including the Potomac Mills shopping mall and the Stonebridge at Potomac Town Centre Shopping Centers. Woodbridge is served by the Prince William County Public Schools, and the Woodbridge campus of Northern Virginia Community College borders the district. Sentara Northern Virginia Medical Center, formerly Potomac Hospital, recently expanded and now has the capacity to serve 183 patients. Transportation includes access to Interstate 95, two VRE commuter train stations, bus service, and a local “ slugging ” system, offering residents a variety of transit options.Woodbridge offers a wide range of recreational opportunities for resident and visitors. The Occoquan Bay National Wildlife Refuge is a natural habitat for a variety of plant and animal life including the bald eagles and ospreys. Veteran’s Park and Leesylvania State Park are located on the Potomac River and provide swimming, boating, picnic and hiking services. Close by is Rippon Lodge, the oldest house in Prince William County, which is open for tours throughout the summer. Trails at Leesylvania Park lead to the ancestral home of the Lee family.

The 571 area code lies within the Eastern Daylight Time Zone (or EDT). The current time in Eastern Daylight Time is 07:21 AM on Mar 10, 2026.