United States Calling Code
United States of America
- Last reviewed
- Last reviewed:
- Reviewed by
- Reviewed by countrycalling.codes editorial team
Key Facts
- International Calling Code
- +1
- Country Name
- United States
- Official Name
- United States of America
- Capital City
- Washington, D.C.
- Region
- Americas
- Subregion
- Northern America
- ISO 3166-1 Alpha-2
- US
- ISO 3166-1 Alpha-3
- USA
- International Exit Prefix
- 011
How to Dial United States
Saving the number in contacts
Start with +1, then use the reviewed national significant number. There is no separate domestic trunk digit to remove. The digit 1 may be used before the ten-digit number for long-distance dialling, but it is also the shared country code in international notation.
Calling from abroad
On a mobile, use the + form. If a network requires digits instead, replace + with that origin network's international prefix. United States's own standard exit prefix for outbound calls is 011.
Part of the North American Numbering Plan (NANP). Shares +1 with Canada and other NANP territories.
Calling a United States mobile
Add +1 before the ten-digit NANP number; do not remove any digit.
- Domestic display
- (202) 555-01XX
- International display
- +1 202 555 01XX
- +1Country code: North American Numbering Plan
- 202Area code: Washington, D.C. example area
- 555 01XXLocal number: Fictional-use pattern
The 555-01XX range is shown as a fictional-use pattern rather than a subscriber number.
Calling a United States landline
Add +1 before the ten-digit NANP number; do not remove any digit.
- Domestic display
- (212) 555-01XX
- International display
- +1 212 555 01XX
- +1Country code: North American Numbering Plan
- 212Area code: New York example area
- 555 01XXLocal number: Fictional-use pattern
Exceptions and Routing Notes
Common United States Formatting Mistakes
- Assuming every +1 number is in the United States.
- Adding both +1 and a separate 1 long-distance prefix.
- Saving only seven local digits without an area code.
Number Portability and Carrier Data
Mobile number portability means a prefix may not identify the current carrier. Treat carrier data as a timestamped lookup result, not a permanent property of the number.
Primary sources
- National numbering plan: United StatesInternational Telecommunication Union. Verified 2026-07-19.
- ITU-T E.164: The international public telecommunication numbering planInternational Telecommunication Union. Verified 2026-07-19.
See our editorial and sourcing methodology.
Other Countries Sharing +1
Calling Code