Area codes in Fairfax, Virginia
Fairfax, Virginia uses 2 area codes — 703 and 571. The main Fairfax area code is 703.
Area codes serving Fairfax
Phone numbers in Fairfax are written as ten digits — for example (703) 555-0190 — and fall in the Eastern Time zone.
How Fairfax came to have 2 area codes
The original Fairfax area code is 703, in service since 1947. As the area ran low on available numbers, an overlay code was added over the same region for new phone lines: 571 (2000). Existing numbers kept their original code — an overlay never forces anyone to change their number — which is why Fairfax now uses all 2 codes and every local call is dialed with ten digits.
All Virginia area codes · Is a Fairfax call a scam?
Nearby cities
- Alexandria area codes
- Manassas area codes
- Washington area codes
- Rockville area codes
- Silver Spring area codes
- Frederick area codes
- Baltimore area codes
- Annapolis area codes
More cities in Virginia
- Richmond area codes
- Virginia Beach area codes
- Norfolk area codes
- Charlottesville area codes
- Roanoke area codes
- Blacksburg area codes
- Chesapeake area codes
- Newport News area codes
Frequently asked questions
What is the area code for Fairfax?
The main area code for Fairfax, Virginia is 703. Fairfax is now served by 2 area codes in total: 703, 571.
How many area codes does Fairfax have?
Fairfax has 2 area codes: 703, 571.
Why does Fairfax have more than one area code?
As Fairfax used up the numbers available in its original area code (703, in service since 1947), additional "overlay" codes were added over the same area so new phone numbers could keep being assigned.
How do you dial a Fairfax number?
Dial all 10 digits — the area code (703 or 571) followed by the 7-digit local number. From abroad, dial +1, then the area code and number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.