Isabela Postal Codes: 3300 to 3336 | Cagayan Valley

Key Facts

Isabela is a province located in the northeastern part of the Cagayan Valley region in the Philippines. Situated on the main island of Luzon, it occupies a strategic position between the Sierra Madre mountain range to the east and the Cagayan River valley to the west. With a land area of approximately 12,414 square kilometers, Isabela is the second largest province in the Philippines by land area, encompassing diverse landscapes ranging from fertile agricultural plains to forested mountainous terrain. The province has a population of around 1.7 million people according to recent census data, making it one of the more populous provinces in northern Luzon. Isabela is administratively divided into 34 municipalities and 3 cities - Ilagan City (the provincial capital), Santiago City, and Cauayan City - each contributing to the province's economic and cultural diversity. Known as the 'Rice Granary of the North,' Isabela plays a crucial role in the country's agricultural production, particularly for rice and corn. To access detailed postal code information for any of Isabela's municipalities and cities, our comprehensive database provides accurate and up-to-date addressing data for this important agricultural province.

Neighboring Regions

• Cagayan
• Kalinga
• Mountain Province
• Ifugao
• Nueva Vizcaya
• Quirino
• Aurora