The area code 571 is located in Alexandria, Virginia.
Area code 571 serves Alexandria, Virginia and the wider Northern Virginia region as an overlay to 703, covering the Virginia suburbs of Washington, D.C. It was introduced in 2000 to add more phone number capacity without changing existing 703 numbers, and it uses mandatory 10-digit dialing. This area code connects a busy mix of historic neighborhoods, federal sites, and fast-growing suburbs in the Washington–Arlington–Alexandria metro area. If you get a call from a 571 number, it likely traces to Northern Virginia, including Alexandria.
Established: 2000; overlay of 703 (Source: North American Numbering Plan Administrator)
Centered on the Potomac River, Alexandria is known for Old Town’s waterfront, brick streets, and the George Washington Masonic National Memorial. The 571/703 service area also includes major regional landmarks like the Pentagon in Arlington, Reagan National Airport (DCA), and Washington Dulles International Airport (IAD). Because 571 overlays 703, both area codes appear across the same communities, and new lines in the region are often assigned 571. Local time is Eastern Time (ET).
Common cities and communities in the 571/703 region include:
For residents and businesses, the key takeaway is simple: 571 and 703 cover the same Northern Virginia footprint, so you’ll see both on caller ID throughout the area. Keeping contacts saved with the full 10-digit number helps with dialing across Alexandria and nearby cities. Whether it’s a historic tour in Old Town, a flight through DCA or IAD, or a call from a tech hub in Reston or Tysons, area code 571 is part of everyday life across Northern Virginia.