San Pedro, officially the City of San Pedro, is a 3rd class component city in the province of Laguna, Philippines. According to the 2020 census, it …San Pedro, officially the City of San Pedro, is a 3rd class component city in the province of Laguna, Philippines. According to the 2020 census, it has a population of 326,001 people. It is named after its patron saint, Saint Peter.