Batanes Postal Codes: 3900 to 3905 | Cagayan Valley

Key Facts

Batanes is the northernmost and smallest province in the Philippines, forming an archipelago province within the Cagayan Valley region. Located approximately 162 kilometers north of Luzon mainland, Batanes consists of 10 islands situated in the Luzon Strait between the Philippines and Taiwan, with only three main islands—Batan, Sabtang, and Itbayat—being inhabited. Covering a total land area of just 219.01 square kilometers, it is the country's smallest province both in population and land area, with approximately 18,000 residents according to recent census data. The province is divided into 6 municipalities: Basco (the capital), Itbayat, Ivana, Mahatao, Sabtang, and Uyugan. Batanes is renowned for its unique Ivatan culture, stone houses built to withstand typhoons, and dramatic landscapes of rolling hills, cliffs, and rugged coastlines. The province experiences a temperate climate distinct from the rest of the Philippines and serves as an important ecological zone with several protected landscapes and seascapes. For those seeking postal code information for Batanes' municipalities and barangays, comprehensive directory services are available to facilitate mail delivery and location-based services throughout this remote island province.