CountryCode.org is your complete guide to make a call from anywhere in the world, to anywhere in the world. This page details United States phone code.
The United States country code 1 will allow you to call United States from another country. United States telephone code 1 is dialed after the IDD. United States international dialing 1 is followed by an area code.
The United States area code table below shows the various city codes for United States. United States country codes are followed by these area codes. With the complete United States dialing code, you can make your international call.