Pilar comprises 24 barangays with an estimated population of 39,109. 16 of its barangays (67%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Balogo | 1,287 | 0 | Dead zone: no towers from any source |
| Binaobawan | 307 | 0 | Dead zone: no towers from any source |
| Blasco | 749 | 0 | Dead zone: no towers from any source |
| Casanayan | 2,944 | 1 | Crowdsourced signal only (no registered tower) |
| Cayus | 1,926 | 1 | Crowdsourced signal only (no registered tower) |
| Dayhagan | 656 | 0 | Dead zone: no towers from any source |
| Dulangan | 4,782 | 2 | Crowdsourced signal only (no registered tower) |
| Monteflor | 221 | 0 | Dead zone: no towers from any source |
| Natividad | 4,236 | 4 | Crowdsourced signal only (no registered tower) |
| Olalo | 977 | 0 | Dead zone: no towers from any source |
| Poblacion | 1,523 | 6 | Crowdsourced signal only (no registered tower) |
| Rosario | 1,025 | 2 | Crowdsourced signal only (no registered tower) |
| San Antonio | 1,627 | 0 | Dead zone: no towers from any source |
| San Blas | 800 | 0 | Dead zone: no towers from any source |
| San Esteban | 1,657 | 1 | Crowdsourced signal only (no registered tower) |
| San Fernando | 1,797 | 0 | Dead zone: no towers from any source |
| San Nicolas | 1,793 | 0 | Dead zone: no towers from any source |
| San Pedro | 1,199 | 0 | Dead zone: no towers from any source |
| San Ramon | 907 | 0 | Dead zone: no towers from any source |
| San Silvestre | 1,018 | 0 | Dead zone: no towers from any source |
| Santa Fe | 3,693 | 0 | Dead zone: no towers from any source |
| Sinamongan | 1,806 | 1 | Crowdsourced signal only (no registered tower) |
| Tabun-acan | 1,742 | 0 | Dead zone: no towers from any source |
| Yating | 437 | 0 | Dead zone: no towers from any source |