Sultan Mastura comprises 13 barangays with an estimated population of 16,295. 13 of its barangays (100%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Balut | 1,664 | 0 | Dead zone: no towers from any source |
| Boliok | 1,244 | 0 | Dead zone: no towers from any source |
| Bungabong | 956 | 0 | Dead zone: no towers from any source |
| Dagurongan | 526 | 0 | Dead zone: no towers from any source |
| Kirkir | 727 | 0 | Dead zone: no towers from any source |
| Macabico (Macabiso) | 2,250 | 0 | Dead zone: no towers from any source |
| Namuken | 1,106 | 0 | Dead zone: no towers from any source |
| Simuay/Seashore | 937 | 0 | Dead zone: no towers from any source |
| Solon | 831 | 0 | Dead zone: no towers from any source |
| Tambo | 1,975 | 0 | Dead zone: no towers from any source |
| Tapayan | 2,295 | 0 | Dead zone: no towers from any source |
| Tariken | 1,237 | 0 | Dead zone: no towers from any source |
| Tuka | 547 | 0 | Dead zone: no towers from any source |