What is the Phone Number Format in United States?

Most phone numbers in United States are written in the following formats:

   Prefix: long distance or international
   --------------------------------------
   |   Carrier or area code 
   |   --------------------
   |   |   Subscriber number
   |   |   -----------------
   v   v   v
       AAA SSS-SSSS     - Local format
  +1   AAA SSS-SSSS     - International format

Most telephone numbers in United States have 10 digits and are written in the format of "AAA SSS-SSSS". Here are some examples: 800 335-2247; 305 876-7000.

When dialing locally inside United States, dial the phone number directly as "AAA SSS-SSSS". Long distance prefix is not needed.

When dialing from outside of United States, the international dial-in prefix "+1" is required. So the format becomes "+1 AAA SSS-SSSS".

When dialing from United States to other countries, the international dail-out prefix "+" or "011" required.

To see phone number formats for other countries or regions, see our Generic Phone Number Format Browser.

To see phone number examples in United States, try our Test Phone Number Generator.

To validate phone numbers in United States, try our Phone Number Format Validator.

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