C
- (Province of La Union) Capasi
- (Province of Ilocos Sur) Cabulong
- (Province of La Union) Cruz
- (Province of La Union) Cobuar
- (Province of La Union) Cibuoan Oeste
- (Province of La Union) Calliat
- (Province of La Union) Calguoan Este
- (Province of Ilocos Sur) Camarao
- (Province of Ilocos Norte) Caraitan
- (Province of Ilocos Sur) Cangitingitan
- (Province of Ilocos Sur) Curtin
- (Province of Ilocos Sur) Cadanglaan East
- (Province of Ilocos Sur) Calaguip
- (Province of Ilocos Sur) Carusipan
- (Province of Pangasinan) Capaz
- (Province of Pangasinan) Calitlitan
- (Province of Ilocos Sur) Camingaguan
- (Province of Ilocos Sur) Cabaya
- (Province of Ilocos Sur) Camav
- (Province of Pangasinan) Capes
- (Province of Pangasinan) Capes
- (Province of Pangasinan) Caranglaan
- (Province of Pangasinan) Camoncadaan
- (Province of Pangasinan) Caliwaquiro
- (Province of Pangasinan) Cadrosipan
- (Province of Pangasinan) Carbunilan
- (Province of Pangasinan) Cabayawasan
- (Province of Pangasinan) Cayanga
- (Province of Pangasinan) Camarin
- (Province of Pangasinan) Centre