Aroroy, officially the Municipality of Aroroy, is a 1st class municipality in the province of Masbate, Philippines. According to the 2020 census, it ha…Aroroy, officially the Municipality of Aroroy, is a 1st class municipality in the province of Masbate, Philippines. According to the 2020 census, it has a population of 88,351 people. The town is known for the Kalanay Cave, one of the most important archaeological sites in Masbate province.