Angadanan, officially the Municipality of Angadanan, is a municipality in the province of Isabela, Philippines. At the 2020 census, it had a pop…Angadanan, officially the Municipality of Angadanan, is a municipality in the province of Isabela, Philippines. At the 2020 census, it had a population of 44,977. The town derived its name from the nearby Angaranan Creek. This creek - a notable geographical feature of the area - played a significant role in the early development and identity of the settlement. The creek's presence influenced the local ecosystem by providing a source of potable water for both people and livestock. It also likely served as a critical landmark for the town's first inhabitants.