About Area Code 571
- Region Code
- 571
- City
- Arlington
- State
- Virginia
- Population
- 2,500,000
- Largest City
- Alexandria
- Neighboring Codes
- Time Zone
- Eastern Time
Manassas, Virginia
$459.99
Area Code 571 — Arlington, Virginia
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Map of Area Code 571
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History & Cultural Notes
In Northern Virginia, numbering relief arrived in 2000 when area code 571 overlaid long‑standing 703. Arlington and nearby jurisdictions had exhausted lines after decades of growth: 703 once spanned all of Virginia (1947) before yielding 804 (1973) and 540 (1995). The overlay made ten‑digit dialing standard and aligned with rapid federal hiring, defense contracting, and the late‑1990s internet buildout across Rosslyn–Ballston and Crystal City, as offices, apartments, and mobile users drove demand for new assignments.
Arlington’s economy rests on the federal presence—the Pentagon and a dense network of contractors, consultancies, and policy institutes—augmented by cybersecurity and cloud firms, transit‑served urban nodes, and National Landing’s reinvestment, including Amazon HQ2. Proximity to Reagan National Airport and data‑center‑heavy Loudoun County shapes workforce and infrastructure, sustaining an international, highly educated population and cross‑jurisdictional commuting patterns.
- Federal government, defense, and intelligence contracting
- Cybersecurity, cloud services, and enterprise IT
- Management consulting, policy research, and international development NGOs
- Aviation, hospitality, and business travel linked to DCA