🇻🇮 U.S. Virgin Islands

Area code 340

Area code 340 is a telephone area code for the U.S. Virgin Islands within the North American Numbering Plan, covering Chtamstths, St. Croix. Local time is UTC−4. Numbers look like (340) 234-5678, or +1 340 234 5678 from abroad.

Country: U.S. Virgin Islands
Time zone: St Thomas UTC−4
Local time now: –
Dial from abroad: +1 340

Places in area code 340

Cities and towns with telephone exchanges in the 340 area code, most exchanges first.

Chtamstths
St. Croix

How to dial area code 340

Calling from	You dial
Inside the 340 area	340 234 5678 (10 digits)
Elsewhere in the US & Canada	1 340 234 5678
Any mobile phone, anywhere	+1 340 234 5678
UK, Europe, India and most countries	00 1 340 234 5678
Australia	0011 1 340 234 5678

Area code 340: FAQ

Where is area code 340?

Area code 340 is in the U.S. Virgin Islands and serves Chtamstths, St. Croix.

What time zone is area code 340 in?

Area code 340 is in the America/St_Thomas time zone: UTC−4.

How do I call a 340 number from outside the US and Canada?

Dial your exit code (00 in most countries, or + on a mobile), then 1, then 340 and the seven-digit number. Example: +1 340 234 5678.

Is a call from area code 340 a scam?

Area code 340 is a regular U.S. Virgin Islands area code, but caller ID can be spoofed: scammers often show local-looking numbers. Do not call back unknown numbers that ask for money or personal data, and check the number with the phone number validator to see whether it is valid and whether it is a mobile, landline or VoIP number.

Phone number API

Check 340 numbers 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.

Read the documentation

100 free requests every month. No credit card required.

GET https://api.numlookupapi.com/v1/validate/+13402345678

{
  "valid": true,
  "number": "13402345678",
  "local_format": "3402345678",
  "international_format": "+13402345678",
  "country_prefix": "+1",
  "country_code": "VI",
  "country_name": "U.S. Virgin Islands",
  "location": "U.S. Virgin Islands",
  "line_type": "…",
  "e164_format": "+13402345678",
  "national_format": "(340) 234-5678"
}