[3] The municipality is named after Zamboanga del Sur Governor and Representative Vincenzo Sagun.

173 which was approved on February 8, 1982; thirteen barangays in Margosatubig had been separated with Cabatan designated the seat of government.

[5] A plebiscite for ratification, along with ten more newly-created local entities including Roseller Lim (now in Zamboanga Sibugay), was held on May 17, coinciding with the barangay elections.

Vicenzo A. Sagun is a coastal municipality that is found in the southern section of Zamboanga del Sur.

The municipality is noted for its rich marine resources, with some parts being groomed to be prime tourist aquatic spot.