Cities in area code 571

19 localities · NANPA data, current as of July 28, 2026.

These are the cities and communities covered by 571 in Virginia. "Covered" means the locality is a rate center holding 571 prefixes; the largest are Washington Zone 8, Washington Zone 17, Herndon.

Ranked by active prefixes, the code's territory runs through Washington Zone 8, Washington Zone 17, Herndon, Washington Zone 19, Leesburg, Manassas, Dale City and Engleside, and 10 smaller communities down to single-prefix localities.

19 of the localities fall within FCC top-100 metropolitan statistical areas; the rest are smaller communities.

19 of these localities are also reachable through other area codes — overlay territory where the same place answers to several codes.

All of the code's territory keeps Eastern time.

Remember that people keep numbers when they relocate, so a 571 number is a where-it-was-issued fact, not a where-they-are fact.

FAQ

What is the biggest city in area code 571?

Washington Zone 8 holds the most active prefixes (124), making it the code's largest numbering locality.

How many places does 571 cover?

19 rate centers in Virginia hold active 571 prefixes, from Washington Zone 8 down to communities with a single prefix.

Does a 571 number guarantee the caller lives in one of these places?

No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.