District of Columbia · Eastern Time
Washington, DC Area Codes
Washington is served by 2 area codes (202, 771). Here's which is original, which are overlays, and how to pick one for a new local number.
Last updated October 1, 2026
Area codes serving Washington
Washington sits in District of Columbia, part of the South region and the Eastern Time zone. Its numbers are spread across an overlay of 2 codes that all cover the same ground: 202, 771.
The original code is 202 (in service since 1947). As the area ran low on numbers, regulators added overlay codes on top instead of splitting the city, so longtime residents kept their numbers while new lines received a newer code.
| Code | Area served | In service |
|---|---|---|
| 202 | The entire District of Columbia (Washington, D.C.) | January 1, 1947 |
| 771 | The entire District of Columbia (Washington, D.C.) | November 9, 2021 |
How to pick an area code for a new number
When you activate a new line in Washington, the carrier assigns whichever code has numbers available — you usually can't choose. If a specific code matters to you (for example the prestige of 202), ask the carrier whether any blocks remain, or request a number transfer. All codes here dial identically and cost the same.
Dialing in Washington
Because Washington is an overlay area, 10-digit dialing is mandatory: always dial the area code plus the seven-digit number, even for a neighbor. See 10-digit dialing and overlay area codes for the background. For every code in District of Columbia, visit the District of Columbia area codes page.
Quick answers
Washington area code FAQ
What area codes does Washington use?
Washington, DC is served by 2 area codes: 202, 771.
Which is the original Washington area code?
202 is the original code for Washington, in service since 1947; the others were added later for more numbers.
Do I need to dial the area code in Washington?
Yes. With multiple overlapping codes, 10-digit dialing is required for every call in this area.