C
- (Province of Pangasinan) Caaringayan
- (Province of Pangasinan) Caapalngan
- (Province of Ilocos Norte) Caangrian
- (Province of Ilocos Sur) Cadoog East
- (Province of La Union) Calabanga
- (Province of Pangasinan) Concordia
- (Province of Pangasinan) Casilan
- (Province of Pangasinan) Camangaan
- (Province of Ilocos Norte) Capataon
- (Province of Ilocos Norte) Cabalingasaan
- (Province of Ilocos Norte) Calumpit
- (Province of Ilocos Norte) Coayan
- (Province of Ilocos Norte) Carmay
- (Province of Ilocos Norte) Cabanyon
- (Province of Ilocos Norte) Csubusoban
- (Province of Ilocos Norte) Capitan
- (Province of Ilocos Norte) Cadulogan
- (Province of Pangasinan) Coldit
- (Province of Pangasinan) Casantiagoan
- (Province of Pangasinan) Casampagaan
- (Province of Pangasinan) Capas
- (Province of Pangasinan) Cabaritan
- (Province of Pangasinan) Cabacaraan
- (Province of Pangasinan) Cili
- (Province of Pangasinan) Castano
- (Province of Pangasinan) Casanfernandoan
- (Province of Pangasinan) Camindoroa
- (Province of Pangasinan) Casaratan
- (Province of Ilocos Norte) Calion
- (Province of Ilocos Norte) Caruon