World / Philippines / Ilocos Sur / Santiago
Santiago has 24 third level subdivisions
| ID | Name |
|---|---|
| 1 | Bigbiga |
| 2 | Busel-Busel |
| 3 | Mambug |
| 4 | Ambucao |
| 5 | Poblacion Norte |
| 6 | Poblacion Sur |
| 7 | Sabangan |
| 8 | Nalasin |
| 9 | San Jose |
| 10 | Olo-Olo Norte |
| 11 | Guinabang |
| 12 | Salincub |
| 13 | Al-Aludig |
| 14 | Olo-Olo Sur |
| 15 | Lang-Ayan |
| 16 | San Roque |
| 17 | Bulbulala |
| 18 | Gabao |
| 19 | Imus |
| 20 | Baybayabas |
| 21 | Dan-Ar |
| 22 | Butol |
| 23 | Ubbog |
| 24 | Caburao |