San Miguel comprises 49 barangays with an estimated population of 163,610. 23 of its barangays (47%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bagong Pag-asa | 734 | 0 | Dead zone: no towers from any source |
| Bagong Silang | 2,459 | 0 | Dead zone: no towers from any source |
| Balaong | 8,344 | 0 | Dead zone: no towers from any source |
| Balite | 3,635 | 3 | Crowdsourced signal only (no registered tower) |
| Bantog | 1,598 | 6 | Crowdsourced signal only (no registered tower) |
| Bardias | 972 | 0 | Dead zone: no towers from any source |
| Baritan | 410 | 0 | Dead zone: no towers from any source |
| Batasan Bata | 2,005 | 0 | Dead zone: no towers from any source |
| Batasan Matanda | 4,917 | 0 | Dead zone: no towers from any source |
| Biak-na-Bato | 5,512 | 1 | Crowdsourced signal only (no registered tower) |
| Biclat | 2,497 | 0 | Dead zone: no towers from any source |
| Buga | 940 | 1 | Crowdsourced signal only (no registered tower) |
| Buliran | 4,246 | 3 | Crowdsourced signal only (no registered tower) |
| Bulualto | 1,859 | 9 | Crowdsourced signal only (no registered tower) |
| Calumpang | 5,357 | 2 | Crowdsourced signal only (no registered tower) |
| Cambio | 2,093 | 2 | Crowdsourced signal only (no registered tower) |
| Camias | 6,097 | 22 | Crowdsourced signal only (no registered tower) |
| Ilog-Bulo | 1,057 | 0 | Dead zone: no towers from any source |
| King Kabayo | 1,162 | 0 | Dead zone: no towers from any source |
| Labne | 5,380 | 0 | Dead zone: no towers from any source |
| Lambakin | 4,007 | 0 | Dead zone: no towers from any source |
| Magmarale | 8,060 | 0 | Dead zone: no towers from any source |
| Malibay | 1,699 | 0 | Dead zone: no towers from any source |
| Maligaya | 1,407 | 0 | Dead zone: no towers from any source |
| Mandile | 990 | 0 | Dead zone: no towers from any source |
| Masalipit | 7,173 | 2 | Crowdsourced signal only (no registered tower) |
| Pacalag | 3,464 | 0 | Dead zone: no towers from any source |
| Paliwasan | 1,185 | 3 | Crowdsourced signal only (no registered tower) |
| Partida | 4,159 | 0 | Dead zone: no towers from any source |
| Pinambaran | 2,578 | 0 | Dead zone: no towers from any source |
| Poblacion | 1,048 | 3 | Crowdsourced signal only (no registered tower) |
| Pulong Bayabas | 7,781 | 0 | Dead zone: no towers from any source |
| Pulong Duhat | 778 | 1 | Crowdsourced signal only (no registered tower) |
| Sacdalan | 1,452 | 4 | Crowdsourced signal only (no registered tower) |
| Salacot | 2,532 | 31 | Crowdsourced signal only (no registered tower) |
| Salangan | 2,938 | 16 | Crowdsourced signal only (no registered tower) |
| San Agustin | 3,921 | 1 | Crowdsourced signal only (no registered tower) |
| San Jose | 2,299 | 3 | Crowdsourced signal only (no registered tower) |
| San Juan | 4,668 | 11 | Crowdsourced signal only (no registered tower) |
| San Vicente | 1,464 | 4 | Crowdsourced signal only (no registered tower) |
| Santa Ines | 9,642 | 8 | Crowdsourced signal only (no registered tower) |
| Santa Lucia | 2,231 | 0 | Dead zone: no towers from any source |
| Santa Rita Bata | 1,926 | 2 | Crowdsourced signal only (no registered tower) |
| Santa Rita Matanda | 1,669 | 5 | Crowdsourced signal only (no registered tower) |
| Sapang | 1,928 | 0 | Dead zone: no towers from any source |
| Sibul | 12,070 | 7 | Crowdsourced signal only (no registered tower) |
| Tartaro | 4,596 | 17 | Crowdsourced signal only (no registered tower) |
| Tibagan | 3,011 | 0 | Dead zone: no towers from any source |
| Tigpalas | 1,660 | 3 | Crowdsourced signal only (no registered tower) |