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Olongapo, officially the City of Olongapo (Filipino: Lungsod ng Olongapo; Iloko: Siudad ti Olongapo; Siyodad nin Olongapo; Kapampangan: Lakanbalen/Ciudad ning Olongapo), is a 1st class highly urbanized city in the Central Luzon region of the Philippines. Located in the province of Zambales but governed independently from the province, it has a population of 260,317 people according to the 2020 census.
