Pilar comprises 21 barangays with an estimated population of 24,576. 19 of its barangays (90%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Aurora | 336 | 0 | Dead zone: no towers from any source |
| Bagacay | 445 | 0 | Dead zone: no towers from any source |
| Bagumbayan | 1,760 | 1 | Crowdsourced signal only (no registered tower) |
| Bayong | 1,734 | 0 | Dead zone: no towers from any source |
| Buenasuerte | 1,570 | 0 | Dead zone: no towers from any source |
| Cagawasan | 557 | 0 | Dead zone: no towers from any source |
| Cansungay | 557 | 0 | Dead zone: no towers from any source |
| Catagda-an | 1,592 | 0 | Dead zone: no towers from any source |
| Del Pilar | 604 | 0 | Dead zone: no towers from any source |
| Estaca | 2,172 | 0 | Dead zone: no towers from any source |
| Ilaud | 684 | 0 | Dead zone: no towers from any source |
| Inaghuban | 1,156 | 0 | Dead zone: no towers from any source |
| La Suerte | 192 | 0 | Dead zone: no towers from any source |
| Lumbay | 1,413 | 0 | Dead zone: no towers from any source |
| Lundag | 1,122 | 0 | Dead zone: no towers from any source |
| Pamacsalan | 674 | 0 | Dead zone: no towers from any source |
| Poblacion | 3,280 | 5 | Crowdsourced signal only (no registered tower) |
| Rizal | 1,217 | 0 | Dead zone: no towers from any source |
| San Carlos | 1,076 | 0 | Dead zone: no towers from any source |
| San Isidro | 1,424 | 0 | Dead zone: no towers from any source |
| San Vicente | 1,011 | 0 | Dead zone: no towers from any source |