Olongapo, officially the
City of Olongapo (; ; ) and often referred to as
Olongapo City, is a
highly urbanized city located in the
province of
Zambales, Philippines. It has a population of 221,178 people according to the 2010 census. Along with the town of
Subic, it comprises Metro Olongapo, one of the twelve metropolitan areas in the Philippines.