Isabela
Municipality in the Philippines
Isabela, officially the Province of Isabela, is the second largest province in the Philippines in land area located in the Cagayan Valley. Its capital and the largest local government unit is the city of Ilagan. Wikipedia
Area: 5,059 mi²
ZIP code: 3300–3336
Capital and largest city: Ilagan
Founded: May 1, 1856
Highest elevation (Mount Dos Cuernos): 1,736 m (5,696 ft)
IDD: area code: +63 (0)78
ISO 3166 code: PH-ISA