Country calling code

United States country code: +1

Q: What is the exit code for international calls from the United States?

To call another country from the United States, dial 011, then the other country's code and number. On mobile phones you can always use + instead.

To call the United States from another country, dial your exit code, then 1, then the national number without the leading 1. A United States mobile number dialled from abroad looks like +1 201-555-0123.

Country code: +1
Exit code (IDD): 011
Trunk prefix: 1
Mobile number length: 10 digits
ISO country code: US
Time zone: 8 time zones, UTC−10 to UTC−5 (UTC−4 in summer)
Capital: Washington
Currency: USD

How to call the United States

1
Dial the exit code of the country you are in. 011 in the US and Canada, 00 in the UK and most of Europe, 0011 in Australia. On a mobile phone, press and hold 0 to type + instead.
2
Dial 1, the country code of the United States.
3
Dial the local number without the leading 1. Numbers written for callers inside the United States start with the trunk prefix 1; it is dropped when you call from abroad.

Calling from	You dial
Inside the United States	(201) 555-0123
Any mobile phone	+1 201-555-0123
UK, Germany, India and most countries	00 1 201-555-0123
Australia	0011 1 201-555-0123
Japan	010 1 201-555-0123

Example with the United States sample number +12015550123.

Calling abroad from the United States

Dial the exit code 011, then the country code and the number. Calls to Canada and the other +1 countries need no exit code: dial 1 + area code + number.

United States phone number format

Example numbers for each number type, written the way they are dialled inside the United States and from abroad. The length counts the digits after the country code.

Type	National format	International format	E.164	Digits
Mobile	(201) 555-0123	+1 201-555-0123	+12015550123	10
Landline	(201) 555-0123	+1 201-555-0123	+12015550123	10
Toll-free	(800) 234-5678	+1 800-234-5678	+18002345678	10
Premium rate	(900) 234-5678	+1 900-234-5678	+19002345678	10
Personal number	(500) 234-5678	+1 500-234-5678	+15002345678	10

Country codes of neighbouring countries

🇨🇦 Canada+1 🇨🇺 Cuba+53 🇲🇽 Mexico+52

United States country code: FAQ

What is the country code of the United States?

The country calling code of the United States is +1. The United States shares the code +1 with other countries and territories.

How do I call the United States from abroad?

Dial your exit code (011 from the US and Canada, 00 from most of Europe, or simply + on a mobile phone), then 1, then the local number without the leading 1. Example: +1 201-555-0123.

What is the exit code for international calls from the United States?

To call another country from the United States, dial 011, then the other country's code and number. On mobile phones you can always use + instead.

How many digits does a United States mobile number have?

Mobile numbers in the United States have 10 digits after the country code (without the trunk prefix), for example +1 201-555-0123.

How can I check if a United States phone number is valid?

Enter the number in the checker on this page. It checks the length and number ranges of the United States offline. To verify numbers in bulk or from your own software, use the numlookupapi phone validation API.

Phone number API

Validate numbers like this in your app

numlookupapi checks any phone number worldwide in one request and returns validity, line type, carrier, location and every standard format as JSON.

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GET https://api.numlookupapi.com/v1/validate/+12015550123

{
  "valid": true,
  "international_format": "+12015550123",
  "country_prefix": "+1",
  "country_code": "US",
  "line_type": "mobile",
  "carrier": "…",
  "e164_format": "+12015550123",
  "national_format": "(201) 555-0123"
}