Virginia · Eastern Time
571 Area Code
Area code 571 is in Virginia, serving northern Virginia suburbs of Washington, D.C., including Arlington, Alexandria and Fairfax. It is in the Eastern Time zone. It shares its territory with overlay code 703, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 571 area code?
571 is a Virginia area code covering northern Virginia suburbs of Washington, D.C., including Arlington, Alexandria and Fairfax. In the wider directory it sits in the South region.
Cities in the 571 area code
- Arlington
- Alexandria
- Reston
- Herndon
- Fairfax
- Falls Church
- Manassas
- Leesburg
- Vienna
- McLean
- Woodbridge
- Annandale
- Centreville
- Dale City
Counties served by 571
Fairfax County, Arlington County, Loudoun County and Prince William County.
571 overlay codes and dialing
The 571 territory is covered by an overlay of 2 area codes: 571, 703. All of them serve the same geographic area, and the original code is 703. Because more than one code covers the same ground, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes.
History of the 571 area code
571 went into service on March 1, 2000 as an overlay of 703, relieving number exhaustion in the Arlington area. Rather than splitting the region, the overlay lets existing customers keep their numbers while new lines draw from the added code. Learn more in our overlay guide.
Is 571 a scam or spam risk?
571 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 571 number on your screen is no guarantee the caller is in Arlington, VA or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Virginia area codes
Explore more
See every code in Virginia, compare codes across the South region, or view all Eastern Time codes. You can also browse the 5XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
571 area code FAQ
Where is the 571 area code?
The 571 area code is in Virginia, covering northern Virginia suburbs of Washington, D.C., including Arlington, Alexandria and Fairfax, in the South region.
What cities are in the 571 area code?
Cities in the 571 area code include Arlington, Alexandria, Reston, Herndon, Fairfax, Falls Church, Manassas, Leesburg, Vienna and McLean.
What time zone is 571 in?
571 is in the Eastern Time zone.
What is the overlay for the 571 area code?
571 shares its territory with 703. Both codes (571, 703) serve the same area, so 10-digit dialing is required for every call.
When did the 571 area code start?
571 went into service on March 1, 2000 as an overlay of 703.
Do I have to dial 10 digits for 571?
Yes. Because 571 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 571 a toll-free or premium code?
No. 571 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.