South region · Eastern Time
District of Columbia Area Codes
All 1 area code serving District of Columbia, the cities each one covers, and which are overlays. District of Columbia is served by 1 area code in the Eastern Time zone.
Last updated June 5, 2026
Full list
Every District of Columbia area code
District of Columbia is served by 1 area code in the Eastern Time zone. It is a single-code state, so seven-digit local dialing may still work in many places.
| Code | Main city | Type | Status |
|---|---|---|---|
| 202 | Washington | Geographic | In service |
Area codes and dialing in District of Columbia
District of Columbia is one of the few US states still covered by a single area code, 202. Because there's no overlap, many local calls can still be completed with seven digits, although dialing the full 10-digit number always works and is the safer habit. 202 serves Washington and the rest of the state, all in the Eastern Time zone.
If District of Columbia ever exhausts its supply of numbers, regulators would almost certainly add an overlay rather than split the state — the modern approach that lets everyone keep their existing number. For now, every District of Columbia number shares the 202 code. Learn the background in how area codes work.
Browse District of Columbia another way
Explore by South region, by time zone, or jump to the city index. You can also see the complete numeric list of every US area code.
Quick answers
District of Columbia area code FAQ
How many area codes does District of Columbia have?
District of Columbia currently has 1 area code: 202.
What is the main area code for District of Columbia?
The busiest metro in District of Columbia is served by the 202 code. Major cities include Washington.
Does District of Columbia require 10-digit dialing?
Much of the state still permits 7-digit local calls, though 10-digit dialing always works. Ten-digit dialing is the national standard.