San Remigio comprises 45 barangays with an estimated population of 38,825. 44 of its barangays (98%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Agricula | 659 | 0 | Dead zone: no towers from any source |
| Alegria | 551 | 0 | Dead zone: no towers from any source |
| Aningalan | 867 | 0 | Dead zone: no towers from any source |
| Atabay | 276 | 0 | Dead zone: no towers from any source |
| Bagumbayan | 524 | 0 | Dead zone: no towers from any source |
| Baladjay | 1,055 | 0 | Dead zone: no towers from any source |
| Banbanan | 413 | 0 | Dead zone: no towers from any source |
| Barangbang | 1,242 | 0 | Dead zone: no towers from any source |
| Bawang | 546 | 0 | Dead zone: no towers from any source |
| Bugo | 1,614 | 0 | Dead zone: no towers from any source |
| Bulan-bulan | 590 | 0 | Dead zone: no towers from any source |
| Cabiawan | 393 | 0 | Dead zone: no towers from any source |
| Cabunga-an | 589 | 0 | Dead zone: no towers from any source |
| Cadolonan | 1,337 | 1 | Crowdsourced signal only (no registered tower) |
| Carawisan I | 487 | 0 | Dead zone: no towers from any source |
| Carawisan II | 656 | 0 | Dead zone: no towers from any source |
| Carmelo I | 355 | 0 | Dead zone: no towers from any source |
| Carmelo II | 450 | 0 | Dead zone: no towers from any source |
| General Fullon | 647 | 0 | Dead zone: no towers from any source |
| General Luna | 704 | 0 | Dead zone: no towers from any source |
| Iguirindon | 901 | 0 | Dead zone: no towers from any source |
| Insubuan | 491 | 0 | Dead zone: no towers from any source |
| La Union | 382 | 0 | Dead zone: no towers from any source |
| Lapak | 493 | 0 | Dead zone: no towers from any source |
| Lumpatan | 1,049 | 0 | Dead zone: no towers from any source |
| Magdalena | 916 | 0 | Dead zone: no towers from any source |
| Maragubdub | 900 | 0 | Dead zone: no towers from any source |
| Nagbangi I (Amatong) | 1,185 | 0 | Dead zone: no towers from any source |
| Nagbangi II | 414 | 0 | Dead zone: no towers from any source |
| Nasuli | 1,085 | 0 | Dead zone: no towers from any source |
| Orquia (Igcatumbal) | 316 | 0 | Dead zone: no towers from any source |
| Osorio I | 658 | 0 | Dead zone: no towers from any source |
| Osorio II | 1,347 | 0 | Dead zone: no towers from any source |
| Panpanan I | 1,891 | 0 | Dead zone: no towers from any source |
| Panpanan II | 907 | 0 | Dead zone: no towers from any source |
| Poblacion (Calag-itan) | 2,412 | 0 | Dead zone: no towers from any source |
| Ramon Magsaysay | 679 | 0 | Dead zone: no towers from any source |
| Rizal | 475 | 0 | Dead zone: no towers from any source |
| San Rafael | 1,347 | 0 | Dead zone: no towers from any source |
| Sinundolan | 2,661 | 0 | Dead zone: no towers from any source |
| Sumaray | 450 | 0 | Dead zone: no towers from any source |
| Trinidad | 1,243 | 0 | Dead zone: no towers from any source |
| Tubudan | 856 | 0 | Dead zone: no towers from any source |
| Vilvar | 583 | 0 | Dead zone: no towers from any source |
| Walker | 1,229 | 0 | Dead zone: no towers from any source |