340 Area Code
U.S. Virgin Islands · Charlotte Amalie
The 340 area code serves U.S. Virgin Islands. It is part of the North American Numbering Plan, and U.S. Virgin Islands is a US territory — calls to and from the mainland dial +1 and stay domestic, with no international rates.
About U.S. Virgin Islands
- Country
- 🇻🇮U.S. Virgin Islands (VI)
- Capital
- Charlotte Amalie
- Population
- 87,146 (2020)
- Area
- 348 km²
- Currency
- US dollar (USD)
- Languages
- English
- Timezone
- America/St_Thomas (UTC−4, no DST)
- Internet TLD
- .vi
- Drives on
- Left
History
Creation: Area code 340 went into service on June 1, 1997, splitting the US Virgin Islands off from area code 809 — the original shared code for the whole Caribbean NANP region — with a permissive dialing period from 809 following. Unlike its Caribbean neighbours, the territory is US soil: calls between the mainland and 340 are domestic, not international.
Predecessor: Before 340, numbers in U.S. Virgin Islands used 809.
Mnemonics: Area codes containing 0 or 1 cannot form mnemonics, because those digits have no letters on a standard telephone keypad.
Sources: en.wikipedia.org/wiki/Area_code_340, www.census.gov/newsroom/press-releases/2021/2020-census-us-virgin-islands.html.
How to call U.S. Virgin Islands
No 011 prefix needed — U.S. Virgin Islands is part of the NANP, so calls dial like a domestic North American number. Long-distance and roaming charges still apply.
Use your country's international access code (00 in most of Europe, 0011 in Australia), then 1, the 340 area code, and the local number.
Domestic calls use seven digits — no area code prefix needed.
Major cities in U.S. Virgin Islands
Settlements served by the 340 area code, ranked by population. Smaller territories may have a single major settlement plus surrounding villages.
| City | Population | % of country |
|---|---|---|
| Charlotte Amalie | 14,477 | 16.6% |
| Christiansted | 1,404 | 1.6% |
| Frederiksted | 693 | 0.8% |
| Listed total | 16,574 | 19.0% |
Telecom operators
Numbers in the 340 area code are assigned by U.S. Virgin Islands's telecom regulator to the following landline and mobile operators.
- Viya
- Liberty VI
Other NANP countries and territories
Frequently Asked Questions
340 is the area code for U.S. Virgin Islands, a US territory. It is part of the North American Numbering Plan (NANP), sharing the +1 prefix with the rest of the US and Canada — and unlike the Caribbean nations in the plan, it is US soil, so calls to and from the mainland are domestic.