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District of Columbia State in United States
Description
Washington, D.C., the nation’s capital, is the heart of American political life and a hub for museums, monuments, and global diplomacy. In addition to its governmental importance, D.C. is a vibrant city known for its arts, diverse neighborhoods, and dynamic culture.

The District is served by area code 202, one of the original area codes established in 1947. Due to increasing demand in the digital age, area code 771 was added as an overlay in 2021. These Washington, D.C. area codes reflect the city’s high telecom usage and population density, covering federal institutions, businesses, and residents.
Map
Area Codes
Major Cities
CityPrefixes
Washington
Catonsville
Falls Church
Arlington
Fairfax
Aberdeen Proving Ground
Washington Navy Yard
Gaithersburg
Rockville
Beltsville
Upper Marlboro
Naval Anacost Annex
Silver Spring
Herndon
College Park
Alexandria
Bowie
Capitol Heights
Laurel
Hyattsville
Riverdale
Bethesda
Williamsburg
Mc Lean
Temple Hills
Springfield
Oakton
Baltimore
Leonardtown
Mount Rainier
Vienna
Pasadena
Linthicum Heights
Centreville