Situated in the Cagayan Valley Region of the Philippines, Isabela occupies the northeastern section of Luzon and ranks as the second-largest province in the country, covering an expansive area of 10,664.56 square kilometers (1,066,456 hectares).
The province is organized into 34 municipalities and 3 cities, with the City of Ilagan serving as its capital. It is further divided into 6 legislative districts and includes a total of 1,055 barangays.
Isabela is divided into three physiographical areas.
Eastern Isabela is rugged and thickly forested. The massive Sierra Madre Mountain Range extends the entire length of the province from north to south. This region features a vast natural park that is home to a variety of wildlife and is known for its high-quality timber.
Western Isabela is a vast, fertile valley bordered by the Sierra Madre to the east and the Cordillera Central to the west. This flat and rolling region is subdivided into smaller valleys and sub-plains by the Cagayan River, the longest river in the Philippines, stretching 301 kilometers.
Coastal Isabela, generally flat to rolling, is distinguished by its 113-kilometer shoreline facing the Pacific Ocean. This area includes the province’s expansive fishing grounds, beautiful bays, caves, small islands, and white sand beaches.
Isabela’s varied landscapes offer rich opportunities for tourism and investment, from eco-tourism in the mountainous east to agricultural ventures in the fertile west, and coastal development along its picturesque shores.
