City of San Fernando (Capital) comprises 59 barangays with an estimated population of 97,745. 16 of its barangays (27%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Abut | 332 | 2 | Registered tower only (not crowd-verified) |
| Apaleng | 563 | 0 | Dead zone: no towers from any source |
| Bacsil | 512 | 2 | Registered tower only (not crowd-verified) |
| Bangbangolan | 441 | 0 | Dead zone: no towers from any source |
| Bangcusay | 2,278 | 3 | Crowdsourced signal only (no registered tower) |
| Barangay I (Pob.) | 1,165 | 9 | Verified coverage (NTC + crowdsourced) |
| Barangay II (Pob.) | 1,132 | 3 | Crowdsourced signal only (no registered tower) |
| Barangay III (Pob.) | 331 | 13 | Crowdsourced signal only (no registered tower) |
| Barangay IV (Pob.) | 1,953 | 5 | Verified coverage (NTC + crowdsourced) |
| Baraoas | 618 | 1 | Registered tower only (not crowd-verified) |
| Bato | 542 | 2 | Verified coverage (NTC + crowdsourced) |
| Biday | 5,401 | 28 | Verified coverage (NTC + crowdsourced) |
| Birunget | 332 | 1 | Verified coverage (NTC + crowdsourced) |
| Bungro | 1,136 | 1 | Registered tower only (not crowd-verified) |
| Cabaroan (Negro) | 1,147 | 3 | Verified coverage (NTC + crowdsourced) |
| Cabarsican | 186 | 0 | Dead zone: no towers from any source |
| Cadaclan | 1,330 | 2 | Registered tower only (not crowd-verified) |
| Calabugao | 275 | 0 | Dead zone: no towers from any source |
| Camansi | 697 | 1 | Crowdsourced signal only (no registered tower) |
| Canaoay | 4,006 | 3 | Crowdsourced signal only (no registered tower) |
| Carlatan | 1,571 | 9 | Verified coverage (NTC + crowdsourced) |
| Catbangen | 9,006 | 24 | Verified coverage (NTC + crowdsourced) |
| Dallangayan Este | 1,154 | 1 | Registered tower only (not crowd-verified) |
| Dallangayan Oeste | 1,294 | 0 | Dead zone: no towers from any source |
| Dalumpinas Este | 1,235 | 1 | Crowdsourced signal only (no registered tower) |
| Dalumpinas Oeste | 1,436 | 8 | Verified coverage (NTC + crowdsourced) |
| Ilocanos Norte | 221 | 5 | Crowdsourced signal only (no registered tower) |
| Ilocanos Sur | 1,208 | 4 | Verified coverage (NTC + crowdsourced) |
| Langcuas | 2,455 | 2 | Registered tower only (not crowd-verified) |
| Lingsat | 3,877 | 14 | Verified coverage (NTC + crowdsourced) |
| Madayegdeg | 2,142 | 2 | Crowdsourced signal only (no registered tower) |
| Mameltac | 1,430 | 0 | Dead zone: no towers from any source |
| Masicong | 507 | 0 | Dead zone: no towers from any source |
| Nagyubuyuban | 1,316 | 0 | Dead zone: no towers from any source |
| Namtutan | 820 | 0 | Dead zone: no towers from any source |
| Narra Este | 262 | 0 | Dead zone: no towers from any source |
| Narra Oeste | 1,140 | 2 | Registered tower only (not crowd-verified) |
| Pacpaco | 241 | 0 | Dead zone: no towers from any source |
| Pagdalagan | 1,997 | 21 | Verified coverage (NTC + crowdsourced) |
| Pagdaraoan | 1,367 | 36 | Verified coverage (NTC + crowdsourced) |
| Pagudpud | 2,417 | 3 | Verified coverage (NTC + crowdsourced) |
| Pao Norte | 752 | 1 | Registered tower only (not crowd-verified) |
| Pao Sur | 261 | 0 | Dead zone: no towers from any source |
| Parian | 2,564 | 17 | Verified coverage (NTC + crowdsourced) |
| Pias | 892 | 1 | Registered tower only (not crowd-verified) |
| Poro | 6,145 | 15 | Verified coverage (NTC + crowdsourced) |
| Puspus | 554 | 0 | Dead zone: no towers from any source |
| Sacyud | 519 | 0 | Dead zone: no towers from any source |
| Sagayad | 2,792 | 0 | Dead zone: no towers from any source |
| San Agustin | 872 | 2 | Crowdsourced signal only (no registered tower) |
| San Francisco | 1,229 | 6 | Verified coverage (NTC + crowdsourced) |
| San Vicente | 2,023 | 4 | Verified coverage (NTC + crowdsourced) |
| Santiago Norte | 2,169 | 4 | Crowdsourced signal only (no registered tower) |
| Santiago Sur | 3,393 | 2 | Verified coverage (NTC + crowdsourced) |
| Saoay | 715 | 1 | Registered tower only (not crowd-verified) |
| Sevilla | 6,548 | 40 | Verified coverage (NTC + crowdsourced) |
| Siboan-Otong | 624 | 1 | Verified coverage (NTC + crowdsourced) |
| Tanqui | 2,879 | 9 | Verified coverage (NTC + crowdsourced) |
| Tanquigan | 1,341 | 0 | Dead zone: no towers from any source |