Isabela Postal Codes: 7300 | City of Isabela, Zamboanga Peninsula

Key Facts

Isabela is a component city located in the Zamboanga Peninsula region of the Philippines. Situated on the island of Basilan, Isabela serves as the provincial capital of Basilan province, though it is administratively independent from the provincial government and falls under the Zamboanga Peninsula region. The city occupies a strategic position on the northern coast of Basilan Island, facing the Basilan Strait which separates it from Zamboanga City on the mainland. With an approximate population of 130,000 people spread across its 45 barangays, Isabela covers a land area of approximately 223 square kilometers. The city serves as the main commercial, educational, and government center for Basilan Island, featuring important institutions such as the Basilan Provincial Capitol and various educational facilities. Isabela is divided into 45 barangays, which represent the smallest administrative divisions in the Philippine system. As the urban hub of Basilan, the city plays a crucial role in regional commerce and governance while maintaining its distinct identity as a component city. For those seeking detailed postal code information for Isabela's various barangays and districts, comprehensive data is available to facilitate mail delivery and location-based services throughout the city.