San Miguel, officially the Municipality of San Miguel, is a 4th class municipality in the province of Iloilo, Philippines. According to the 202…San Miguel, officially the Municipality of San Miguel, is a 4th class municipality in the province of Iloilo, Philippines. According to the 2020 census, it has a population of 30,115 people. It is the site of Aganan River Dam, which is an agricultural purpose dam used for irrigation of the ricefields in the surrounding towns. Pepsi Bottlers Philippines Inc. has a bottling plant in San Miguel, which supplies Pepsi products in Panay Island.