Washington DC Area Code Information
Washington DC Area Codes
Washington, DC is currently using one area code. Washington, DC does not currently utilize any area code overlays. Area code 202 covers all of the District of Columbia.
Changes and History of Washington, DC Area Codes:
Area code 202 was put into service.
Area code 771 will be put into service as an all services overlay of area code 202. Ten digit dialing (area code + seven digit number) will be necessary in the 202/771 overlay effective October 9, 2021 because different homes in the same geographic area can have the same seven digit phone number but each would have a different area code.