District of Columbia Area Codes

About District of Columbia Area Codes

The U.S. state of District of Columbia uses a total of 1 telephone area codes in this dataset. These calling codes serve large metropolitan areas, suburbs, small towns, and rural communities across the state.

Major cities served by these area codes include Washington. Each area code can cover multiple cities and counties, while some dense urban regions may be split across more than one code.

List of Area Codes in District of Columbia

The table below lists all area codes used in District of Columbia, along with a sample of major cities for each code.