Area code 784 is the local telephone area code of Saint Vincent and the Grenadines. The 784 area code, or "SVG" was created during a split from the original 809 area code which was done on or around the date June 1998.
There was a one-year permissive dialing period when either/both the old 809 and the new 784 could be used for dialing calls to Saint Vincent and the Grenadines. Mandatory use of 784 for dialing calls to Saint Vincent and the Grenadines became effective by June, 1999.
Saint Vincent and the Grenadines was the last location to break off from area code 809 during the 1995-1999 time period, when all of the various Caribbean and Atlantic geographic islands of the North American Numbering Plan which shared the 809 area code, broke off into their own unique new area codes, ultimately leaving the Dominican Republic as the sole entity retaining the 809 area code by June 1999.
When in Saint Vincent and the Grenadines, dial the local seven digit phone number alone.
When calling to Saint Vincent and the Grenadines from anywhere in the United States, Canada, and most other Caribbean islands of the North American Numbering Plan, dial 1 + 784 + the local seven digit phone number.