The province is composed of 32 municipalities, 2 component cities and 768 barangays. Of the municipalities, 20 are identified as lowland areas and the remaining 12 are considered upland areas.
CITIES / MUNICIPALITIES |
NO. OF BARANGAYS |
1. ALILEM |
09 |
2. BANAYOYO |
14 |
3. BANTAY |
34 |
4. BURGOS |
26 |
5. CABUGAO |
33 |
6. CAOAYAN |
17 |
7. CERVANTES |
13 |
8. GALIMUYOD |
24 |
9. G. DEL PILAR |
07 |
10. LIDLIDDA |
11 |
11. MAGSINGAL |
30 |
12. NAGBUKEL |
12 |
13. NARVACAN |
34 |
14. QUIRINO |
09 |
15. SALCEDO |
21 |
16. SAN EMILIO |
08 |
17. SAN ESTEBAN |
10 |
18. SAN ILDEFONSO |
15 |
19. SAN JUAN |
32 |
20. SAN VICENTE |
07 |
21. SANTA |
26 |
22. STA. CATALINA |
09 |
23. STA. CRUZ |
49 |
24. STA. LUCIA |
36 |
25. STA. MARIA |
33 |
26. SANTIAGO |
24 |
27. STO. DOMINGO |
36 |
28. SIGAY |
07 |
29. SINAIT |
44 |
30. SUGPON |
06 |
31. SUYO |
08 |
32. TAGUDIN |
43 |
33. CANDON CITY |
42 |
34. VIGAN CITY |
39 |
ILOCOS SUR |
768 |