Magdalena comprises 24 barangays with an estimated population of 35,329. 13 of its barangays (54%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Alipit | 582 | 1 | Crowdsourced signal only (no registered tower) |
| Baanan | 157 | 1 | Crowdsourced signal only (no registered tower) |
| Balanac | 1,540 | 0 | Dead zone: no towers from any source |
| Bucal | 1,405 | 0 | Dead zone: no towers from any source |
| Buenavista | 2,437 | 1 | Crowdsourced signal only (no registered tower) |
| Bungkol | 544 | 0 | Dead zone: no towers from any source |
| Buo | 598 | 0 | Dead zone: no towers from any source |
| Burlungan | 787 | 2 | Crowdsourced signal only (no registered tower) |
| Cigaras | 4,640 | 3 | Crowdsourced signal only (no registered tower) |
| Halayhayin | 1,641 | 1 | Crowdsourced signal only (no registered tower) |
| Ibabang Atingay | 782 | 0 | Dead zone: no towers from any source |
| Ibabang Butnong | 2,747 | 2 | Crowdsourced signal only (no registered tower) |
| Ilayang Atingay | 743 | 0 | Dead zone: no towers from any source |
| Ilayang Butnong | 1,722 | 0 | Dead zone: no towers from any source |
| Ilog | 1,199 | 0 | Dead zone: no towers from any source |
| Malaking Ambling | 1,734 | 4 | Crowdsourced signal only (no registered tower) |
| Malinao | 262 | 0 | Dead zone: no towers from any source |
| Maravilla | 389 | 0 | Dead zone: no towers from any source |
| Munting Ambling | 2,283 | 1 | Crowdsourced signal only (no registered tower) |
| Poblacion | 1,534 | 3 | Crowdsourced signal only (no registered tower) |
| Sabang | 1,653 | 0 | Dead zone: no towers from any source |
| Salasad | 4,324 | 1 | Crowdsourced signal only (no registered tower) |
| Tanawan | 497 | 0 | Dead zone: no towers from any source |
| Tipunan | 1,129 | 0 | Dead zone: no towers from any source |