U.S. Virgin Islands country code +1 340 — call U.S. Virgin Islands & get a number.
Everything you need to correctly dial the U.S. Virgin Islands — area code 340, number formatting, and the difference between the U.S. and British Virgin Islands. Plus how to get a local St. Thomas, St. Croix, or St. John number for your business without setting foot on an island.
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U.S. Virgin Islands at a glance
The numbers and facts you need before you dial.
What is the country code for U.S. Virgin Islands?
The U.S. Virgin Islands isn't a separate "country" in the telecom sense — it's a full member of the North American Numbering Plan (NANP), the same shared system used by the US, Canada, and about two dozen other Caribbean territories and nations.
A call to the USVI from anywhere in the NANP zone works exactly like a domestic long-distance call. No international dialing prefix, no country code lookup from a US or Canadian phone — just 1-340 plus the seven-digit local number, the same way you'd call Texas or Ontario.
For callers outside the NANP zone — UK, Germany, Australia, anywhere else — the territory is reached using the shared NANP country code +1, followed by the 340 area code. This dual identity (domestic-feeling for North America, +1-340 for the rest of the world) is what makes the USVI a genuinely distinct entry even though it shares its "country code" with the US mainland.
Code +1 340 was assigned to U.S. Virgin Islands by the ITU under the E.164 plan. The “+” means “dial your local international exit code”; on a mobile, press and hold 0 to type it.
All four mean the same thing — they connect your call to U.S. Virgin Islands.
How to call U.S. Virgin Islands from anywhere
From within the USVI, dial the 7-digit local number, or 340 + 7 digits as 10-digit dialing becomes standard across NANP areas.
From the US, Canada or other NANP territories: 1 + 340 + 7-digit local number — no international prefix needed. From outside the NANP zone (UK, EU, Asia): your country's international exit code (00 from UK/EU, 011 from most of Asia) + 1 + 340 + 7-digit local number. Example from London: 00 1 340 XXX XXXX.
Full example: +1 340 340 XXX XXXX — drop the local leading 0 when calling from abroad.
U.S. Virgin Islands phone number format explained
U.S. Virgin Islands numbers follow standard NANP formatting: +1 (340) XXX-XXXX. The 340 area code covers the entire territory — St. Thomas, St. Croix, and St. John all share this single area code.
Unlike many international numbering plans, there's no separate mobile prefix distinguishing landlines from cell phones — mobile and fixed-line numbers are drawn from the same 340 pool, consistent with NANP conventions elsewhere. Coverage quality, porting rules, and carrier obligations are governed by the same FCC framework that applies to the mainland US, rather than a separate national regulator.
Landline
+1-340-XXX-XXXX (all three islands share one area code)
Mobile
+1-340-XXX-XXXX (One Communications, AT&T, Innovative Wireless — same 340 pool as landlines)
U.S. Virgin Islands area codes — major cities
Drop the local leading 0 when calling from abroad.
| City | Region | Area code |
|---|---|---|
| Charlotte Amalie (capital) | St. Thomas | 340 |
| Frederiksted | St. Croix | 340 |
| Christiansted | St. Croix | 340 |
| Cruz Bay | St. John | 340 |
| Coral Bay | St. John | 340 |
U.S. Virgin Islands mobile network prefixes
The prefix after +1 340 tells you which network issued the SIM — though number portability means it no longer guarantees the operator.
One Communications (formerly Viya)
AT&T
Innovative Wireless (Vitelcom / Innovative Telephone legacy)
U.S. Virgin Islands time zone
The U.S. Virgin Islands observes Atlantic Standard Time (AST), UTC-4, year-round. The territory does not observe daylight saving time, which means its offset relative to the US East Coast shifts seasonally.
During US Eastern Standard Time (winter), USVI is 1 hour ahead of the US East Coast. During US Eastern Daylight Time (summer), USVI is on the same clock time as the US East Coast.
For businesses coordinating calls or support coverage between the mainland US and the USVI, this seasonal alignment shift is worth building into scheduling — a call that lands at 3 PM Eastern in summer lands at 3 PM AST too, but the same call in winter lands at 4 PM AST.
Emergency numbers in U.S. Virgin Islands
Free to call from any U.S. Virgin Islands phone, landline or mobile.
Common mistakes when calling U.S. Virgin Islands
Almost every failed international call is a formatting issue, not a network issue.
Confusing the U.S. Virgin Islands (+1 340) with the British Virgin Islands (+1 284)
These are neighboring but entirely separate jurisdictions in the same island chain — sending a call, SMS, or virtual-number setup to the wrong area code means it never reaches the intended islands. If you're provisioning for St. Thomas, St. Croix, or St. John, it's 340, not 284.
Adding an unnecessary international dialing prefix from the U.S. or Canada
Because the USVI is inside the NANP, calls from NANP countries should be dialed as 1-340-XXX-XXXX, not with an international access code like 011.
Assuming a separate country code exists for the USVI
It shares the +1 NANP country code with the U.S., Canada, and other member territories — the distinguishing element is the 340 area code, not a unique country code.
Overlooking that all three islands share one area code
St. Thomas, St. Croix, and St. John all share 340. There's no island-specific prefix, so area code alone won't indicate which island a number is registered to.
Tips to reduce the cost of calling U.S. Virgin Islands
Confirm 340, not 284, before provisioning
the U.S. Virgin Islands (340) and the British Virgin Islands (284) are next-door neighbors with the same name; getting the wrong one wastes real money on numbers that never reach your target market.
Treat the USVI as a domestic US market from a dialing standpoint
1-340 numbers dial like Texas or Ontario numbers from any US or Canadian phone — build them into your existing NANP call flows without special international handling.
Watch the DST-driven seasonal shift versus the US East Coast
USVI holds AST year-round while the US mainland shifts. Matches Eastern in summer, 1 hour ahead in winter — bake it into recurring calendar invites.
Use a Caribbean-region MCM setup for cross-territory coverage
if you serve tourism, charter, or real-estate clients across the region, pair a 340 line with Puerto Rico (+1) and other Caribbean numbers on one MCM account rather than separate carrier contracts.
Why businesses get a U.S. Virgin Islands virtual number
The single biggest thing to get right about the USVI before you dial or provision a number is this: there are two Virgin Islands, right next to each other, and they are NOT the same country code.
U.S. Virgin Islands (St. Thomas, St. Croix, St. John) is a US territory on area code +1 340. British Virgin Islands (Tortola, Virgin Gorda, and others) is a British Overseas Territory on area code +1 284. Same name, same island chain, both under +1 — but separate governments, separate area codes, separate regulators (FCC for the US side; UK/local for the British side).
This is the same category of confusion the American Samoa / independent Samoa distinction creates elsewhere in the Pacific: neighboring territories, near-identical names, entirely different numbering plans. Dial the wrong one and your call — or your virtual-number setup — simply won't reach the business you intended.
Local presence for tourism and hospitality
with a Caribbean economy built heavily around tourism, a recognizable 340 number reassures travelers, resorts, and charter guests that they're reaching a local, trustworthy contact rather than an unfamiliar overseas line.
NANP simplicity for U.S. and Canadian customers
because 340 numbers work like ordinary domestic long-distance numbers, mainland customers can reach a USVI-based business without international calling charges or dialing confusion.
Support for remote teams and seasonal operations
companies running seasonal charter, real estate, or vacation-rental operations in the USVI can maintain a consistent local number year-round, even when staff are managing calls remotely from the mainland.
Credibility for financial services and offshore business structures
the USVI's status as a US territory with distinct tax incentives attracts certain financial and consulting operations that benefit from a locally rooted phone presence.
Disaster-resilience and continuity
cloud-based virtual numbers let USVI-facing businesses keep a local 340 number live and reroute calls instantly during hurricane season or infrastructure disruptions, without depending on a single physical line on the islands.
Real PSTN presence
a true 340 number on the network, not a US-forwarding workaround.
U.S. Virgin Islands virtual numbers with My Country Mobile
Getting a U.S. Virgin Islands number doesn't require a local office, a local SIM, or a local carrier contract. MCM provisions 340 virtual numbers that route to your existing phones, softphones, or call-center stack anywhere in the world — with call recording, IVR, porting, and CRM integrations available out of the box, whether you need a single number for a boutique St. John hotel or a full contact-center deployment spanning the Caribbean.
Local DIDs in major area codes — provisioned in minutes
Call forwarding to any mobile, landline, SIP endpoint, or softphone worldwide
HD voice with G.711, G.729, Opus & AMR-WB — auto-negotiated per call
Sub-150ms latency on major voice corridors via distributed PoPs
99.99% uptime SLA backed by geo-redundant infrastructure & sub-2s failover
WebRTC support for browser-based calling without softphone installs
REST APIs for provisioning, routing & call detail records (CDRs)
Built-in fraud protection with AI anomaly detection & STIR/SHAKEN
24/7 network monitoring and dedicated support
How to get your U.S. Virgin Islands virtual number
Most businesses are live within hours, not days.
Choose your number type — a local 340 virtual number, a toll-free number, or a full SIP trunking setup depending on call volume and use case.
Verify availability — confirm 340 number availability for your preferred prefix or vanity pattern through the MCM dashboard.
Connect your existing phone system — route the new number to your mobile phone, VoIP softphone, or existing call center platform.
Go live and monitor — activate the number, test inbound/outbound flow, and track call quality, uptime, and usage from the MCM dashboard.
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Get a U.S. Virgin Islands virtual number with MCM
Add a Caribbean presence the right way — start your free trial and claim a +1 340 U.S. Virgin Islands number today.
U.S. Virgin Islands +1 340 — FAQ
What is the country code for the U.S. Virgin Islands?expand_more
The U.S. Virgin Islands uses the shared NANP country code +1, combined with area code 340. There's no separate "country code" unique to the territory — it's +1 340.
Is the U.S. Virgin Islands the same as the British Virgin Islands?expand_more
No. They're neighboring but separate territories in the same island chain. The U.S. Virgin Islands (St. Thomas, St. Croix, St. John) uses area code 340; the British Virgin Islands (Tortola, Virgin Gorda, and others) uses area code 284. Different governments, different regulators, different numbers.
Do I need to dial an international access code to call the U.S. Virgin Islands from the U.S.?expand_more
No. Because the USVI is part of the North American Numbering Plan, calls from the U.S. or Canada are dialed just like domestic long-distance calls: 1-340-XXX-XXXX.
What area code covers St. Thomas, St. Croix, and St. John?expand_more
All three main islands share a single area code: 340. There's no island-specific prefix distinguishing them.
What's the emergency number in the U.S. Virgin Islands?expand_more
911, the same as the rest of the United States.
What time zone is the U.S. Virgin Islands in?expand_more
Atlantic Standard Time (AST), UTC-4, with no daylight saving time observed. USVI matches U.S. Eastern time in summer and sits 1 hour ahead of Eastern in winter.
Can I get a U.S. Virgin Islands virtual phone number without living there?expand_more
Yes. Virtual number providers like MCM can provision a 340 number that forwards to any phone or system worldwide, without requiring a physical presence or local carrier account in the territory.
Is it true people drive on the left in the U.S. Virgin Islands?expand_more
Yes — the USVI is one of the few places under the U.S. flag where traffic drives on the left side of the road, a holdover from the islands' period as a Danish colony before being sold to the United States. Vehicles are still typically left-hand-drive American models, making it one of the more distinctive driving quirks in U.S. territory.
What currency is used in the U.S. Virgin Islands?expand_more
The U.S. Dollar (USD), consistent with its status as a U.S. territory.
Who regulates phone numbers in the U.S. Virgin Islands?expand_more
As part of the NANP, numbering is administered under the same framework as the U.S. mainland, with oversight from the FCC and NANPA (the North American Numbering Plan Administrator).