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Where Is 571 Area Code?

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Database Updated: August 13, 2025
Virginia Phone Number Lookups
Where Is 571 Area Code?

Where is Area Code 571?

Area code 571 is located in the state of Virginia. It serves a significant portion of Northern Virginia, encompassing several major cities and counties. This area code is an overlay, meaning it was introduced to cover the same geographic region as an existing area code due to the high demand for new numbers. The regions covered by area code 571 include:

  • Arlington County
  • Fairfax County
  • Loudoun County
  • Prince William County
  • Alexandria County
  • Cities such as Alexandria, Fairfax, Centreville, Dale City, and Reston

For more information about the regions covered by area code 571, visit the Virginia State Corporation Commission (SCC).

Virginia State Corporation Commission (SCC)
1300 E. Main St., Richmond, Virginia 23219
Phone: 804-371-9733 or 1-866-722-2551 
E-mail: sccefile@scc.virginia.gov
Mailing Address
P.O. Box 1197, Richmond, Virginia 23218 

What time zone is 571 area code in the USA?

The 571 area code is situated in the Eastern Time Zone (ET) of the United States. This time zone observes daylight saving time, shifting from Eastern Standard Time (EST) to Eastern Daylight Time (EDT) during the warmer months. For accurate timekeeping, refer to the National Institute of Standards and Technology.

History of the 571 Area Code

The 571 area code was introduced in 2000 as an overlay to the existing 703 area code. The primary reason for this addition was the rapid growth in the region, which led to an increased demand for new telephone numbers. Overlays are a common solution to address the exhaustion of available numbers in a given area without requiring existing customers to change their phone numbers. For more details on the history and administration of area codes, visit the North American Numbering Plan Administrator (NANPA).

NANPA Mailing Address
One Tower Center Boulevard
Suite 800
East Brunswick, NJ 08816

NANPA Customer Support
Tel: 1-866-623-2282
Email: support@nanpa.com
Fax: 571-363-3838

How Many People Use the 571 Area Code?

The 571 area code serves a densely populated region in Northern Virginia. The population within this area is substantial, reflecting the urban and suburban nature of the region. For detailed demographic information, consult the U.S. Census Bureau.

U.S. Census Bureau
4600 Silver Hill Road, Washington, DC 20233
Tel: 301-763-INFO (4636) or 800-923-8282

Is the 571 Area Code Toll-Free?

The 571 area code is a geographic area code, not a toll-free number. It is designated for a specific region in Virginia and is used for local calls within that area. Toll-free numbers in the United States typically begin with prefixes such as 800, 888, 877, 866, 855, 844, and 833. For more information on toll-free numbers and their operation, visit the Federal Communications Commission.

Federal Communications Commission
45 L Street NE, Washington, DC 20554
Tel: 1-888-CALL FCC (225-5322)
https://www.fcc.gov/

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