United States Dialing Code — +1
The international dialing code for United States is +1. To call United States from the United States or Canada, dial 011 + 1 + area code + local number. From Europe, dial 00 + 1 + area code + local number. On mobile phones worldwide, use +1 followed by the area code and local number.
How to Call United States
From USA/Canada: 011 + 1 + local number. From UK/Europe: 00 + 1 + local number. From mobile phones: +1 + local number.
United States City Area Codes
- New York City, NY — +1 212
- Los Angeles, CA — +1 213
- Chicago, IL — +1 312
- Houston, TX — +1 713
- Phoenix, AZ — +1 602
- Philadelphia, PA — +1 215
- San Antonio, TX — +1 210
- San Diego, CA — +1 619
- Dallas, TX — +1 214
- San Jose, CA — +1 408
Related United States references
About United States International Dialing
Country calling codes are standardized by the International Telecommunication Union (ITU). The United States country code +1 is used to route international telephone calls to United States from any country in the world.