Sapad comprises 17 barangays with an estimated population of 34,202. 14 of its barangays (82%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Baning | 744 | 0 | Dead zone: no towers from any source |
| Buriasan (Pob.) | 7,474 | 2 | Crowdsourced signal only (no registered tower) |
| Dansalan | 3,121 | 5 | Crowdsourced signal only (no registered tower) |
| Gamal | 1,217 | 0 | Dead zone: no towers from any source |
| Inudaran I | 565 | 0 | Dead zone: no towers from any source |
| Inudaran II | 391 | 0 | Dead zone: no towers from any source |
| Karkum | 280 | 0 | Dead zone: no towers from any source |
| Katipunan | 1,820 | 0 | Dead zone: no towers from any source |
| Mabugnao | 1,462 | 0 | Dead zone: no towers from any source |
| Maito Salug | 359 | 0 | Dead zone: no towers from any source |
| Mala Salug | 1,922 | 0 | Dead zone: no towers from any source |
| Mama-anon | 1,031 | 0 | Dead zone: no towers from any source |
| Mapurog | 1,776 | 0 | Dead zone: no towers from any source |
| Pancilan | 1,562 | 0 | Dead zone: no towers from any source |
| Panoloon | 5,293 | 3 | Crowdsourced signal only (no registered tower) |
| Pili | 3,671 | 0 | Dead zone: no towers from any source |
| Sapad | 1,514 | 0 | Dead zone: no towers from any source |