S
- (Province of Ilocos Norte) Salindeg
- (Province of Ilocos Sur) Salindeg
- (Province of Ilocos Sur) Salincub
- (Province of La Union) Salincob
- (Province of Pangasinan) Salinao
- (Province of Pangasinan) Saleng
- (Province of Pangasinan) Salay
- (Province of Pangasinan) Salay
- (Province of Pangasinan) Salay
- (Province of Pangasinan) Salavante
- (Province of Pangasinan) Salasa
- (Province of Ilocos Norte) Salapasap
- (Province of Ilocos Sur) Salan
- (Province of Pangasinan) Salamanca
- (Province of Ilocos Norte) Salad
- (Province of Pangasinan) Salaan
- (Province of Pangasinan) Salaan
- (Province of Pangasinan) Salaan
- (Province of Ilocos Sur) Sagsagat
- (Province of Ilocos Norte) Sagpatan
- (Province of Ilocos Sur) Sagpat
- (Province of Ilocos Norte) Sagneb
- (Province of Ilocos Sur) Sagneb
- (Province of Ilocos Sur) Sagayaden
- (Province of La Union) Sagayad
- (Province of Ilocos Sur) Sagat
- (Province of La Union) Sacyud
- (Province of Ilocos Sur) Sacuyya Sur
- (Province of Ilocos Sur) Sacuyya Norte
- (Province of Ilocos Norte) Sacritan