Washington, DC Dialing Codes - At a Glance

Below is a recap of the important dialing codes you may need for making calls to, from, or within Washington, DC.

Follow links for additional information on any code - or to look up that code for other countries.

Washington, DC phone numbers are 10-digits long consisting of a 3-digit area code and a 7-digit local subscriber number. The phone number format is the same for both landline and mobile phones.

Additional Washington, DC dialing and calling information is provided throughout this site.

Washington, DC dialing instructions

Washington, DC phone numbers

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