Basud comprises 29 barangays with an estimated population of 43,050. 19 of its barangays (66%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Angas | 1,610 | 0 | Dead zone: no towers from any source |
| Bactas | 1,295 | 2 | Crowdsourced signal only (no registered tower) |
| Binatagan | 1,114 | 2 | Crowdsourced signal only (no registered tower) |
| Caayunan | 999 | 0 | Dead zone: no towers from any source |
| Guinatungan | 2,124 | 0 | Dead zone: no towers from any source |
| Hinampacan | 695 | 0 | Dead zone: no towers from any source |
| Langa | 1,329 | 2 | Crowdsourced signal only (no registered tower) |
| Laniton | 1,666 | 3 | Crowdsourced signal only (no registered tower) |
| Lidong | 223 | 0 | Dead zone: no towers from any source |
| Mampili | 1,001 | 0 | Dead zone: no towers from any source |
| Mandazo | 550 | 0 | Dead zone: no towers from any source |
| Mangcamagong | 1,412 | 0 | Dead zone: no towers from any source |
| Manmuntay | 522 | 0 | Dead zone: no towers from any source |
| Mantugawe | 783 | 1 | Crowdsourced signal only (no registered tower) |
| Matnog | 4,306 | 8 | Crowdsourced signal only (no registered tower) |
| Mocong | 706 | 0 | Dead zone: no towers from any source |
| Oliva | 791 | 0 | Dead zone: no towers from any source |
| Pagsangahan | 1,359 | 3 | Crowdsourced signal only (no registered tower) |
| Pinagwarasan | 720 | 0 | Dead zone: no towers from any source |
| Plaridel | 853 | 0 | Dead zone: no towers from any source |
| Poblacion 1 | 3,526 | 0 | Dead zone: no towers from any source |
| Poblacion 2 | 2,777 | 1 | Crowdsourced signal only (no registered tower) |
| San Felipe | 3,681 | 4 | Crowdsourced signal only (no registered tower) |
| San Jose | 1,360 | 0 | Dead zone: no towers from any source |
| San Pascual | 1,545 | 0 | Dead zone: no towers from any source |
| Taba-taba | 650 | 0 | Dead zone: no towers from any source |
| Tacad | 1,140 | 0 | Dead zone: no towers from any source |
| Taisan | 1,612 | 0 | Dead zone: no towers from any source |
| Tuaca | 2,701 | 1 | Crowdsourced signal only (no registered tower) |