Tudela comprises 33 barangays with an estimated population of 35,999. 26 of its barangays (79%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Balon | 900 | 0 | Dead zone: no towers from any source |
| Barra | 1,856 | 0 | Dead zone: no towers from any source |
| Basirang | 5,819 | 1 | Crowdsourced signal only (no registered tower) |
| Bongabong | 575 | 0 | Dead zone: no towers from any source |
| Buenavista | 415 | 0 | Dead zone: no towers from any source |
| Cabol-anonan | 1,158 | 0 | Dead zone: no towers from any source |
| Cahayag | 319 | 0 | Dead zone: no towers from any source |
| Calambutan Bajo | 105 | 0 | Dead zone: no towers from any source |
| Calambutan Settlement | 112 | 0 | Dead zone: no towers from any source |
| Camating | 217 | 0 | Dead zone: no towers from any source |
| Canibungan Proper | 966 | 0 | Dead zone: no towers from any source |
| Casilak San Agustin | 780 | 0 | Dead zone: no towers from any source |
| Centro Hulpa (Pob.) | 632 | 0 | Dead zone: no towers from any source |
| Centro Napu (Pob.) | 2,001 | 1 | Crowdsourced signal only (no registered tower) |
| Centro Upper (Pob.) | 263 | 0 | Dead zone: no towers from any source |
| Duanguican | 1,122 | 0 | Dead zone: no towers from any source |
| Gala | 544 | 0 | Dead zone: no towers from any source |
| Gumbil | 1,372 | 0 | Dead zone: no towers from any source |
| Locso-on | 1,435 | 0 | Dead zone: no towers from any source |
| Maikay | 516 | 0 | Dead zone: no towers from any source |
| Maribojoc | 627 | 0 | Dead zone: no towers from any source |
| Mitugas | 827 | 0 | Dead zone: no towers from any source |
| Nailon | 1,802 | 1 | Crowdsourced signal only (no registered tower) |
| Namut | 2,079 | 0 | Dead zone: no towers from any source |
| Napurog | 1,565 | 0 | Dead zone: no towers from any source |
| Pan-ay Diot | 608 | 2 | Crowdsourced signal only (no registered tower) |
| San Nicolas | 1,570 | 0 | Dead zone: no towers from any source |
| Sebac | 949 | 1 | Crowdsourced signal only (no registered tower) |
| Silongon | 2,507 | 0 | Dead zone: no towers from any source |
| Sinuza | 126 | 0 | Dead zone: no towers from any source |
| Taguima | 1,104 | 1 | Crowdsourced signal only (no registered tower) |
| Tigdok | 283 | 1 | Crowdsourced signal only (no registered tower) |
| Yahong | 845 | 0 | Dead zone: no towers from any source |