Area Codes of the United States

The United States area code system is a numerical designation used to divide the country into distinct geographic regions for the purpose of routing telephone calls. Area codes, typically comprised of three digits, serve as an essential component of the North American Numbering Plan (NANP) and are used to distinguish one part of the country from another.

US Country Code

The country code for the United States is +1. It is added to the beginning of any phone number you are dialing that's in the US.

Area Codes by State

Other US Area Codes

Washington D.C.
  • 202
American Samoa
  • 684
  • 671
Marianas Island
  • 670
Puerto Rico
  • 787
  • 939
US Virgin Islands
  • 340

Toll Free Number Area Codes

Often called 1-800 numbers, toll-free numbers, often indicated by a unique 3-digit code, offer free landline connections and can originate from anywhere in the United States and Canada.

  • 800
  • 833
  • 844
  • 855
  • 866
  • 877
  • 888
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