Calasiao, officially the Municipality of Calasiao, is a 1st class municipality in the province of Pangasinan, Philippines. According to the 2020 ce…Calasiao, officially the Municipality of Calasiao, is a 1st class municipality in the province of Pangasinan, Philippines. According to the 2020 census, it has a population of 100,471 people. Today, Calasiao is known as a first class, highly commercialized municipality and is strategically located at the heart of Pangasinan. It governs 24 barangays and 31 sitios in a total land area of 4,836 hectares. Being a town adjacent to the city of Dagupan, the municipality experiences continuous economic boom and is increasingly becoming an important satellite commercial hub for Metro Dagupan. In terms of delicacy, Calasiao's flagship product is the native rice cake known as Puto Calasiao.