Antipolo, officially known as the City of Antipolo (Filipino: Lungsod ng Antipolo), is a 1st class component city and capital of the province of Rizal, Philippines. According to the 2020 census, it has a population of 887,399 people. It is the most populous city in the Calabarzon region, and the seventh most-populous city in the Philippines.Antipolo was converted from a municipality into a component city of Rizal Province on April 4, 1998, under Republic Act No. 8508. A new provincial capitol building was inaugurated in the city in March 2009 to replace the old capitol in Pasig, which has long been outside the jurisdiction of Rizal Province, since Pasig was included in Metro Manila in 1975. With the transfer of the provincial government to Antipolo, it is highly favored to be officially designated as the new capital of the province. On March 14, 2011, Antipolo was declared according to Proclamation No. 124 s. 2011 a highly-urbanized city by then President Benigno S.