If you’ve ever received a call from the Arlington, Virginia area and wondered what area code covers it, you’re not alone. The area code Arlington VA residents and businesses use is 703 — and in some cases, 571 as an overlay. Whether you’re a new resident, a business owner, or just someone trying to figure out if that unknown number is local, this guide breaks it all down in plain English.
Understanding the Area Code for Arlington, VA
Arlington is one of the most densely populated counties in the United States, sitting right across the Potomac River from Washington, D.C. Given its location and growth, it’s no surprise that phone numbers here come with a bit of history.
The Primary Area Code: 703
Area code 703 has served Northern Virginia since 1947. Back then, it covered the entire state of Virginia. Over the decades, as the population boomed and more phone lines were needed, Virginia was split into multiple area codes.
Today, 703 covers:
- Arlington County
- Alexandria
- Fairfax County
- Prince William County
- Parts of the Shenandoah Valley
If someone calls you from a 703 number, there’s a solid chance they’re somewhere in Northern Virginia — including Arlington.
The Overlay Code: 571
As demand for phone numbers increased in the early 2000s, the 571 area code was introduced as an overlay for the same geographic region. An overlay means two area codes serve the exact same area — not different parts of it.
So yes, an Arlington phone number could start with either 703 or 571. Both are equally valid and equally local.
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Why Arlington Has Two Area Codes
This confuses a lot of people, and honestly, it’s a fair question. Why would one county need two area codes?
The short answer is demand. Northern Virginia grew rapidly — especially with the explosion of tech companies, government contractors, and federal agencies in the region. Cell phones, fax machines, internet lines, and business phone systems all required new numbers. Eventually, 703 was running low on available combinations.
Rather than splitting the region geographically (which would have forced many people and businesses to change their numbers), regulators introduced 571 as an overlay. New numbers were assigned from either pool going forward.
This is actually a pretty common solution in major metro areas across the U.S.
Practical Examples: What This Looks Like Day to Day
Let’s say you move to Arlington and sign up for a new cell phone plan. Your carrier might assign you a number starting with either 703 or 571 — you usually don’t get to choose which one. Both work the same way.
Or maybe you’re setting up a business landline in Rosslyn or Clarendon. Same deal. Your provider pulls from whichever pool has availability.
Here’s a quick example of what local numbers might look like:
- (703) 555-0198 — a Fairfax County business
- (571) 555-0247 — an Arlington cell phone
- (703) 555-0312 — an Alexandria residential line
All three of those are considered local calls within the Northern Virginia region.
Pros and Cons of the 703/571 Overlay System
Like any system, the overlay approach has its upsides and downsides.
Pros
- No forced number changes — Existing 703 customers kept their numbers when 571 launched
- Plenty of number availability — Two pools mean more combinations for a growing region
- Simple for users — You don’t need to know which code belongs to which part of town
- Works seamlessly — Calls between 703 and 571 numbers are treated as local
Cons
- 10-digit dialing is required — Even for local calls, you must dial the full area code plus the seven-digit number
- Confusion for newcomers — People unfamiliar with overlays sometimes assume 571 numbers are from a different area
- Spam and scam calls — Both area codes are used by robocallers targeting Northern Virginia residents
- No geographic distinction — You can’t tell from the area code alone whether someone is in Arlington versus Fairfax
Common Mistakes People Make
A few mistakes come up again and again when it comes to Arlington area codes. Let’s clear them up.
Assuming 571 is long distance. It’s not. Both 703 and 571 are local to Northern Virginia. Treating a 571 number as out-of-area is a common misunderstanding, especially for people who moved here from places without overlays.
Forgetting to dial 10 digits. Since the overlay was introduced, you can’t just dial seven digits for a local call. You need to include the area code every time — even if the person is a mile away.
Thinking D.C. area codes cover Arlington. Washington, D.C. uses area code 202. Maryland suburbs use 301 and 240. Arlington is in Virginia, so it’s 703 or 571 — not 202, even though you can practically see the Capitol from parts of the county.
Blocking all unfamiliar area codes. Some people set their phones to block calls from area codes they don’t recognize. If you’ve blocked 571 thinking it’s suspicious, you might be missing legitimate calls from neighbors and local businesses.
Best Practices for Dealing With Arlington Area Codes
Whether you’re a resident, a small business owner, or a professional working in the D.C. metro area, here are some solid habits to keep in mind.
Save contacts with full 10-digit numbers. Always store numbers with the area code included. This avoids confusion and ensures calls go through correctly.
Verify unknown numbers before calling back. If you get a missed call from a 703 or 571 number you don’t recognize, a quick reverse lookup can tell you if it’s a business, a known spam line, or something legitimate.
Use local area codes for business credibility. If you’re running a business in Arlington, having a 703 or 571 number signals to customers that you’re local. Many people are more likely to pick up or call back a number they recognize as regional.
Be aware of spoofing. Scammers often spoof local area codes to make their calls look familiar. If someone claiming to be the IRS, a utility company, or a government agency calls from a 703 or 571 number demanding immediate payment, that’s a red flag.
Teach family members the overlay system. Older relatives or kids new to the area might not understand why local calls come from two different area codes. A quick explanation saves a lot of confusion.
Conclusion
The area code situation in Arlington, VA is pretty straightforward once you understand the basics. The region uses 703 as its original code and 571 as an overlay — both covering the same geographic area in Northern Virginia. Neither is more “local” than the other, and both are widely used by residents, businesses, and organizations throughout Arlington and the surrounding counties.
If you’re new to the area, just remember: dial all 10 digits for every call, don’t dismiss 571 numbers as out-of-area, and stay alert for spoofed numbers that try to look local. With those habits in place, navigating phone calls in Arlington becomes second nature pretty quickly.
Frequently Asked Questions
1. What area code is used in Arlington, VA?
Arlington, VA primarily uses area code 703. The overlay code 571 also serves the same region and is equally common for local numbers.
2. Is 571 a local area code for Arlington?
Yes. The 571 area code is an overlay for Northern Virginia, meaning it covers the same geographic area as 703 — including Arlington. Calls between 703 and 571 numbers are treated as local.
3. What is the difference between area codes 703 and 571?
There is no geographic difference. Both codes serve Northern Virginia. The 571 code was introduced as an overlay when 703 was running low on available number combinations.
4. Do I need to dial 10 digits for local calls in Arlington, VA?
Yes. Because of the overlay system, all local calls in Northern Virginia require 10-digit dialing — meaning you must include the area code even for calls within the same city or county.
5. Does Washington, D.C. share an area code with Arlington, VA?
No. Washington, D.C. uses area code 202, while Arlington and the rest of Northern Virginia use 703 and 571. Despite being geographically close, they are served by different area codes.
