Panganiban, officially the Municipality of Panganiban, is a 5th class municipality in the province of Catanduanes, Philippines. According t…Panganiban, officially the Municipality of Panganiban, is a 5th class municipality in the province of Catanduanes, Philippines. According to the 2020 census, it has a population of 9,713 people. It is formerly known as Payo.