Sultan Kudarat has 249 barangays across 12 municipalities. 191 barangays (77%) are connectivity dead zones.
| Municipality | Barangays | Dead zones |
|---|---|---|
| Bagumbayan | 19 | 16 (84%) |
| City of Tacurong | 20 | 9 (45%) |
| Columbio | 16 | 13 (81%) |
| Esperanza | 19 | 10 (53%) |
| Isulan (Capital) | 17 | 5 (29%) |
| Kalamansig | 15 | 13 (87%) |
| Lambayong (Mariano Marcos) | 26 | 16 (62%) |
| Lebak | 27 | 23 (85%) |
| Lutayan | 11 | 11 (100%) |
| Palimbang | 40 | 40 (100%) |
| President Quirino | 19 | 15 (79%) |
| Sen. Ninoy Aquino | 20 | 20 (100%) |