Ilagan Postal Codes: 3300 | Isabela, Cagayan Valley

Key Facts

Ilagan is a component city and the capital of Isabela province in the Philippines, serving as the provincial center of government, commerce, and education. Located in the northeastern part of Luzon island within the Cagayan Valley region, Ilagan occupies a strategic position along the Cagayan River, the country's longest river. With a land area of approximately 1,166 square kilometers, it is recognized as the largest city in the Philippines by land area and serves as a major agricultural hub known for rice, corn, and tobacco production. According to recent census data, Ilagan has a population of over 150,000 residents distributed across its 91 barangays. The city's geography features a mix of flat agricultural lands in the valley areas and mountainous terrain in its eastern portions, contributing to its diverse ecosystem. As the capital city, Ilagan contains the provincial capitol building, major government offices, educational institutions, and commercial establishments that serve not only its residents but also visitors from surrounding municipalities. This comprehensive administrative structure makes Ilagan an essential resource for accessing detailed postal code information and location data for all its constituent barangays and surrounding areas.

Neighboring Regions

• Tumauini
• San Mariano
• Maconacon
• Divilacan
• Mallig
• Quirino
• Gamu
• Naguilian
• Benito Soliven