Dulag comprises 45 barangays with an estimated population of 47,605. 20 of its barangays (44%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Alegre | 820 | 1 | Crowdsourced signal only (no registered tower) |
| Arado | 199 | 0 | Dead zone: no towers from any source |
| Barbo (Pob.) | 1,232 | 1 | Crowdsourced signal only (no registered tower) |
| Batug | 124 | 0 | Dead zone: no towers from any source |
| Bolongtohan | 852 | 0 | Dead zone: no towers from any source |
| Bulod | 372 | 0 | Dead zone: no towers from any source |
| Buntay (Pob.) | 251 | 1 | Crowdsourced signal only (no registered tower) |
| Cabacungan | 4,603 | 1 | Crowdsourced signal only (no registered tower) |
| Cabarasan | 994 | 1 | Crowdsourced signal only (no registered tower) |
| Cabato-an | 958 | 1 | Crowdsourced signal only (no registered tower) |
| Calipayan | 252 | 0 | Dead zone: no towers from any source |
| Calubian | 927 | 0 | Dead zone: no towers from any source |
| Cambula District (Pob.) | 114 | 0 | Dead zone: no towers from any source |
| Camitoc | 222 | 0 | Dead zone: no towers from any source |
| Camote | 1,015 | 0 | Dead zone: no towers from any source |
| Candao (Pob.) | 53 | 3 | Crowdsourced signal only (no registered tower) |
| Catmonan (Pob.) | 918 | 0 | Dead zone: no towers from any source |
| Combis (Pob.) | 1,817 | 4 | Crowdsourced signal only (no registered tower) |
| Dacay | 591 | 0 | Dead zone: no towers from any source |
| Del Carmen | 815 | 0 | Dead zone: no towers from any source |
| Del Pilar | 1,643 | 1 | Crowdsourced signal only (no registered tower) |
| Fatima | 669 | 2 | Crowdsourced signal only (no registered tower) |
| General Roxas | 1,097 | 0 | Dead zone: no towers from any source |
| Highway (Pob.) | 2,434 | 4 | Crowdsourced signal only (no registered tower) |
| Luan | 305 | 1 | Crowdsourced signal only (no registered tower) |
| Magsaysay | 936 | 1 | Crowdsourced signal only (no registered tower) |
| Maricum | 356 | 0 | Dead zone: no towers from any source |
| Market Site (Pob.) | 380 | 1 | Crowdsourced signal only (no registered tower) |
| Rawis | 1,272 | 1 | Crowdsourced signal only (no registered tower) |
| Rizal | 3,015 | 5 | Crowdsourced signal only (no registered tower) |
| Romualdez | 736 | 0 | Dead zone: no towers from any source |
| Sabang Daguitan | 391 | 0 | Dead zone: no towers from any source |
| Salvacion | 1,081 | 28 | Crowdsourced signal only (no registered tower) |
| San Agustin | 1,940 | 1 | Crowdsourced signal only (no registered tower) |
| San Antonio | 565 | 0 | Dead zone: no towers from any source |
| San Isidro | 725 | 0 | Dead zone: no towers from any source |
| San Jose | 4,385 | 3 | Crowdsourced signal only (no registered tower) |
| San Miguel (Pob.) | 995 | 1 | Crowdsourced signal only (no registered tower) |
| San Rafael | 2,234 | 6 | Crowdsourced signal only (no registered tower) |
| San Vicente | 596 | 0 | Dead zone: no towers from any source |
| Serrano (Pob.) | 509 | 1 | Crowdsourced signal only (no registered tower) |
| Sungi (Pob.) | 536 | 1 | Crowdsourced signal only (no registered tower) |
| Tabu | 1,397 | 2 | Crowdsourced signal only (no registered tower) |
| Tigbao | 1,613 | 3 | Crowdsourced signal only (no registered tower) |
| Victory | 666 | 0 | Dead zone: no towers from any source |