340 Area Code – Charlotte Amalie, United States Virgin Islands: Location, Time Zone & History

The U.S. Virgin Islands share a single area code, 340, across their main islands, from Charlotte Amalie on St. Thomas to Christiansted and Frederiksted on St. Croix and Cruz Bay on St. John. The code was separated from the Caribbean-wide 809 numbering plan through a permissive dialing period that ran from June 1, 1997 to June 30, 1998, when 340 became the sole area code serving the territory.

With a population of roughly 87,000, the islands' economy is shaped heavily by tourism and hospitality, alongside rum distilling, pharmaceuticals, offshore financial services and watch assembly. Together these sectors reflect a territory balancing a visitor-driven economy with smaller-scale manufacturing and finance activity spread across its main communities, rather than concentrating all commercial life in a single hub. Each of the four main communities, Charlotte Amalie, Christiansted, Frederiksted and Cruz Bay, retains its own local character alongside these shared industries.

No further split or overlay has been needed in the years since 1998, and the area code continues to cover the entire territory as a single, self-contained numbering plan area.