Narvacan comprises 34 barangays with an estimated population of 46,506. 20 of its barangays (59%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Abuor | 1,389 | 0 | Dead zone: no towers from any source |
| Ambulogan | 1,348 | 1 | Crowdsourced signal only (no registered tower) |
| Aquib | 793 | 0 | Dead zone: no towers from any source |
| Banglayan | 1,239 | 0 | Dead zone: no towers from any source |
| Bantay Abot | 1,307 | 11 | Crowdsourced signal only (no registered tower) |
| Bulanos | 750 | 2 | Crowdsourced signal only (no registered tower) |
| Cadacad | 564 | 0 | Dead zone: no towers from any source |
| Cagayungan | 1,411 | 0 | Dead zone: no towers from any source |
| Camarao | 1,633 | 1 | Crowdsourced signal only (no registered tower) |
| Casilagan | 985 | 0 | Dead zone: no towers from any source |
| Codoog | 593 | 0 | Dead zone: no towers from any source |
| Dasay | 1,092 | 3 | Crowdsourced signal only (no registered tower) |
| Dinalaoan | 946 | 0 | Dead zone: no towers from any source |
| Estancia | 256 | 0 | Dead zone: no towers from any source |
| Lanipao | 576 | 0 | Dead zone: no towers from any source |
| Lungog | 2,043 | 2 | Crowdsourced signal only (no registered tower) |
| Margaay | 2,503 | 13 | Crowdsourced signal only (no registered tower) |
| Marozo | 1,339 | 0 | Dead zone: no towers from any source |
| Naguneg | 2,996 | 8 | Crowdsourced signal only (no registered tower) |
| Orence | 2,791 | 0 | Dead zone: no towers from any source |
| Pantoc | 947 | 0 | Dead zone: no towers from any source |
| Paratong | 1,043 | 4 | Crowdsourced signal only (no registered tower) |
| Parparia | 1,448 | 0 | Dead zone: no towers from any source |
| Quinarayan | 2,128 | 4 | Crowdsourced signal only (no registered tower) |
| Rivadavia | 494 | 0 | Dead zone: no towers from any source |
| San Antonio | 2,036 | 7 | Crowdsourced signal only (no registered tower) |
| San Jose (Pob.) | 2,028 | 3 | Crowdsourced signal only (no registered tower) |
| San Pablo | 1,014 | 0 | Dead zone: no towers from any source |
| San Pedro | 1,648 | 0 | Dead zone: no towers from any source |
| Santa Lucia (Pob.) | 1,538 | 5 | Crowdsourced signal only (no registered tower) |
| Sarmingan | 510 | 0 | Dead zone: no towers from any source |
| Sucoc | 1,617 | 0 | Dead zone: no towers from any source |
| Sulvec | 2,957 | 27 | Crowdsourced signal only (no registered tower) |
| Turod | 544 | 0 | Dead zone: no towers from any source |