Sibuco, officially the Municipality of Sibuco, is a 1st class municipality in the province of Zamboanga del Norte, Philippines. According to the 2…Sibuco, officially the Municipality of Sibuco, is a 1st class municipality in the province of Zamboanga del Norte, Philippines. According to the 2020 census, it has a population of 36,049 people. It is also treated like a suburb of neighboring Zamboanga City.