How to call Saint Helena from the USA/Canada:

dial 011 + 290 + phone number

Calling from another country?

The time in St. Helena is now 12:19:25am

Calling Saint Helena from the United States explained:

011 - US exit code; dial first for international calls made from the USA or Canada
290 - Country Code for St. Helena (includes Tristan da Cunha Island)
Phone Number - 5 digits (except for Tristan da Cunha which still uses 4 digit phone numbers)
US to St. Helena international dialing format: 011 290 ?? ???

Starting digits for main areas:

Jamestown: 2
Tristan da Cunha: 8

Phone Books:

Helanta - St. Helena directory

Updates:

Saint Helena telephone numbering changes - October 2013