Siasi Postal Codes: 7412 | Sulu, Autonomous Region in Muslim Mindanao

Key Facts

Siasi is a municipality located in the province of Sulu within the Autonomous Region in Muslim Mindanao in the southern Philippines. Situated in the Sulu Archipelago, Siasi occupies Siasi Island and several smaller surrounding islands, positioned approximately 40 kilometers southwest of the provincial capital Jolo. This coastal municipality serves as an important trading and fishing center in the region, with its main settlement located along the island's eastern coast. Siasi covers a land area of approximately 192 square kilometers and has a population of around 80,000 people according to recent estimates, predominantly composed of Tausug and Sama ethnic groups who engage primarily in fishing, seaweed farming, and small-scale trade. The municipality is divided into 50 barangays, reflecting its significant administrative structure within the Sulu province. As an island municipality, Siasi's economy is heavily dependent on marine resources and inter-island commerce, with regular boat connections to neighboring islands and mainland Mindanao. For residents and businesses seeking postal services, Siasi's barangays each have specific postal codes that facilitate efficient mail delivery throughout the municipality's island communities.