Area Code
U.S. Virgin Islands, United States
Local Time
8:03 AM
Atlantic Time
Area Code
340
State / Province
U.S. Virgin Islands
Country
United States
Time Zone
Atlantic Time
Area code 340 covers 4 rate centers across U.S. Virgin Islands. Rate centers are geographic areas used by telephone companies to determine local calling boundaries.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+13405550100">+13405550100</a><a href="tel:+13405550199">+13405550199</a>Area code 340 is a North American Numbering Plan (NANP) telephone area code assigned to U.S. Virgin Islands, United States. It is the sole area code assigned to U.S. Virgin Islands, covering the entire state or province under a single numbering plan area.
Yes. 340 is an active North American Numbering Plan (NANP) area code, currently assigned to U.S. Virgin Islands, United States. It is safe to answer or dial calls using this area code.
Area code 340 covers 4 rate centers across U.S. Virgin Islands. Communities served include Charlotte Amalie (st Thomas), Christiansted (st Croix), Frederiksted (st Croix), St Croix. Rate centers are the geographic building blocks telephone carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.
All numbers in the 340 area code observe Atlantic Time (IANA timezone: America/Halifax). Atlantic Time is UTC−4 in winter (AST) and UTC−3 in summer (ADT). When placing a call to a 340 number from a different time zone, check the current local time above to avoid calling outside of business hours.
From within U.S. Virgin Islands, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 340 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 340 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 340 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +13405550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.