Zamboanga Sibugay is one of three provinces on the Zamboanga Peninsula. Tungawan, R.T. Lim, Ipil, Titay, Naga, Siay, Kabasalan, Imelda, Diplahan, Buug, Malangas, Alicia, Payao, Mabuhay, Talusan and Olutanga are municipalities within the province.