North American Numbers Source-cited · ownership disclosed
Area code
340
In service
United States · since 1997

U.S. Virgin Islands

Area code 340 is the sole area code for the U.S. Virgin Islands. It was created in 1998 by splitting the territory out of the former Caribbean area code 809.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
U.S. Virgin Islands
Type
geographic
Status
in service
In service since
1997
Projected exhaust
2086 Q1

Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.

A · Where it is

Where 340 is

The entire U.S. Virgin Islands (St. Croix, St. Thomas, St. John)..

Communities served wholly or partly by 340:

Charlotte AmalieChristianstedFrederiksted
B · Relationships

How it relates to other codes

The codes 340 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?

Split from · 1998 809 340 split from the shared Caribbean 809 in 1998.
What's changing. No overlay. Single territory-wide code.
C · History

How 340 got here

1997-06-01
Permissive dialing period began (ran through June 30, 1998).
Source: Wikipedia
1998
Split from area code 809 completed as the dedicated USVI code.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
81
Prefixes available
719

Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.

Compare 340 with another code →
Sources
Wikipedia ↗
Area code 340
NumberResearch.org ↗
Live status, dates, assignment counts and exhaust forecast — data as of 2026-09-18 (CC BY 4.0).

Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.