North American Numbers
State · 2 area codes
District of Columbia area codes
Washington, D.C. is served by an overlay of two area codes, 202 and 771.
A · Metros
Major metro areas
Washington
B · Directory
All District of Columbia area codes
Every code opens its profile — codes with a full write-up show their place; the rest show live numbering data while their detailed profile is added.
Sources
Wikipedia ↗
List of NANP area codes (secondary)
Compiled by North American Numbers, last checked 2026-09-19. How this is made.