Area code vs country code

A US area code (like 646 or 305) identifies a region inside the United States. A country code is the international prefix for a whole country — for the US that's +1.

One frequent mix-up worth settling first: 555 is neither an area code nor a country code — it's the reserved exchange prefix movies use.

Area code vs country code at a glance

Country codeArea code
What it identifiesAn entire countryA region inside a country
Example (US)+1646, 305, 213
Digits1–3 (varies by country)3 (US / NANP)
Where it sits in a number(+1) 646 555-0123+1 (646) 555-0123

So in +1 646 555-0123, +1 is the country code (USA) and 646 is the area code (New York City).

Because the US shares +1 with Canada and much of the Caribbean, some “+1” numbers are actually international — the basis of the one-ring scam.

Frequently asked questions

Is a US area code the same as a country code?

No. A US area code is a 3-digit code that identifies a region inside the United States (and the wider North American Numbering Plan). A country code is the international prefix you dial to reach a whole country. The United States country code is +1.

What is the country code for the USA?

The country (calling) code for the United States is +1. The US shares +1 with Canada and much of the Caribbean under the North American Numbering Plan, so a full international US number is +1, then the 3-digit area code, then the 7-digit local number.

Why do people search '[area code] country code'?

It's a common mix-up. A number like 646 or 305 is a US area code, not a country code. If you saw a +1 number, the +1 is the country code and the 3 digits after it are the area code.

How do I dial a US number from another country?

Dial your country's exit code (often 00, or just use +), then 1 (the US country code), then the 3-digit area code, then the 7-digit number. Example: +1 212 555 0123.

Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.