 It was created in 2002 as a split from area code 561 when there was a need for more phone numbers (due in part to the increase of cell phone users).The Treasure Coast was served by four different area codes in about a 15-year span.It spent 41 years as part of area code 305, until it became part of area code 407 in 1988, then it became part of 561 in 1996, and finally split off into 772 in 2002.