Casiguran, officially the Municipality of Casiguran, is a 4th class municipality in the province of Sorsogon, Philippines. According to the 2020 census, it has a population of 35,602 people. History Established in the year 1600, Casiguran was the first missionary parish of Sorsogon. When the Spaniards first set foot in this part of Luzon in the 1570s, Casiguran was considered as their center of Kabikolan. In 1583, the Franciscan missionaries took over the evangelization work started by the Augustinians. A folk legend narrates that the name Casiguran originated phonetically from the Bicol phrase 'kasi gurang' (literally translated, "because old") as it was Sorsogon's first parish. Yet another narrative went that the nameless village's youngsters kept secluded to their homes, while only the elderly ventured outside; for fear that their children would be forced to servitude by the Spanish invaders. Geography Casiguran is located at the coast of Sorsogon Bay, at the south of Luzon island, making it a suburb of neighboring Sorsogon City. It is from Sorsogon City and from Manila. Barangays Casiguran is politically subdivided into 25 barangays. Climate Demographics Economy References External links Casiguran Profile at PhilAtlas.com [ Philippine Standard Geographic Code] Philippine Census Information Local Governance Performance Management System Municipalities of Sorsogon