Sara comprises 42 barangays with an estimated population of 51,589. 26 of its barangays (62%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Aguirre | 367 | 0 | Dead zone: no towers from any source |
| Aldeguer | 942 | 1 | Crowdsourced signal only (no registered tower) |
| Alibayog | 1,861 | 1 | Crowdsourced signal only (no registered tower) |
| Anoring | 1,165 | 5 | Crowdsourced signal only (no registered tower) |
| Apelo | 739 | 0 | Dead zone: no towers from any source |
| Apologista | 3,502 | 6 | Crowdsourced signal only (no registered tower) |
| Aposaga | 378 | 0 | Dead zone: no towers from any source |
| Arante | 1,037 | 0 | Dead zone: no towers from any source |
| Ardemil | 2,159 | 0 | Dead zone: no towers from any source |
| Aspera | 896 | 4 | Crowdsourced signal only (no registered tower) |
| Aswe-Pabriaga | 816 | 1 | Crowdsourced signal only (no registered tower) |
| Bagaygay | 1,286 | 0 | Dead zone: no towers from any source |
| Bakabak | 617 | 0 | Dead zone: no towers from any source |
| Batitao | 139 | 0 | Dead zone: no towers from any source |
| Bato | 1,118 | 0 | Dead zone: no towers from any source |
| Castor | 399 | 1 | Crowdsourced signal only (no registered tower) |
| Crespo | 846 | 0 | Dead zone: no towers from any source |
| Del Castillo | 2,180 | 0 | Dead zone: no towers from any source |
| Devera | 2,072 | 1 | Crowdsourced signal only (no registered tower) |
| Domingo | 1,454 | 1 | Crowdsourced signal only (no registered tower) |
| Ferraris | 600 | 0 | Dead zone: no towers from any source |
| Gildore | 582 | 0 | Dead zone: no towers from any source |
| Improgo | 1,038 | 0 | Dead zone: no towers from any source |
| Juaneza | 1,863 | 0 | Dead zone: no towers from any source |
| Labigan | 2,432 | 1 | Crowdsourced signal only (no registered tower) |
| Lanciola | 1,142 | 1 | Crowdsourced signal only (no registered tower) |
| Latawan | 526 | 0 | Dead zone: no towers from any source |
| Malapaya | 843 | 0 | Dead zone: no towers from any source |
| Muyco | 1,085 | 0 | Dead zone: no towers from any source |
| Padios | 1,902 | 0 | Dead zone: no towers from any source |
| Pasig | 4,393 | 0 | Dead zone: no towers from any source |
| Poblacion Ilawod | 1,705 | 6 | Crowdsourced signal only (no registered tower) |
| Poblacion Ilaya | 292 | 1 | Crowdsourced signal only (no registered tower) |
| Poblacion Market | 178 | 1 | Crowdsourced signal only (no registered tower) |
| Posadas | 1,015 | 0 | Dead zone: no towers from any source |
| Preciosa | 1,117 | 0 | Dead zone: no towers from any source |
| Salcedo | 711 | 0 | Dead zone: no towers from any source |
| San Luis | 1,145 | 0 | Dead zone: no towers from any source |
| Tady | 1,780 | 0 | Dead zone: no towers from any source |
| Tentay | 1,044 | 0 | Dead zone: no towers from any source |
| Villahermosa | 556 | 2 | Crowdsourced signal only (no registered tower) |
| Zerrudo | 1,667 | 1 | Crowdsourced signal only (no registered tower) |