officially the City of Zamboanga, (Chavacano: Ciudad de Zamboanga, Filipino: Lungsod ng Zamboanga), is a 1st class highly urbanized city in the Zamboanga Peninsula of the Philippines. According to the 2015 census, it has a population of 861,799 people. It is the 6th most populous and 3rd largest city by land area in the Philippines.It is the commercial and industrial center of the Zamboanga Peninsula Region.