Quirino Postal Codes: 3321 | Isabela, Cagayan Valley

Key Facts

Quirino is a province located in the northeastern part of the Cagayan Valley region in the Philippines. Situated within the larger province of Isabela, Quirino occupies a strategic position in the Sierra Madre mountain range, characterized by rugged terrain, forested landscapes, and river systems that flow toward the Cagayan River basin. The province covers approximately 3,057 square kilometers and has a population of around 188,000 people as of recent estimates. It is divided into 6 municipalities: Cabarroguis (the capital), Aglipay, Diffun, Maddela, Nagtipunan, and Saguday. Quirino's economy is primarily agricultural, with rice, corn, and banana as major crops, while its forests contribute to timber production and ecotourism potential. The province was named after Elpidio Quirino, the sixth President of the Philippines, and was established as a separate province in 1966. For detailed postal code information and local services across its municipalities, residents and visitors can access reliable regional data through official platforms.

Neighboring Regions

• Aurora
• Nueva Vizcaya
• Isabela