Siquijor (Capital) comprises 42 barangays with an estimated population of 27,862. 26 of its barangays (62%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Banban | 850 | 0 | Dead zone: no towers from any source |
| Bolos | 433 | 1 | Registered tower only (not crowd-verified) |
| Caipilan | 1,287 | 2 | Registered tower only (not crowd-verified) |
| Caitican | 628 | 0 | Dead zone: no towers from any source |
| Calalinan | 741 | 2 | Verified coverage (NTC + crowdsourced) |
| Canal | 430 | 2 | Crowdsourced signal only (no registered tower) |
| Candanay Norte | 784 | 0 | Dead zone: no towers from any source |
| Candanay Sur | 975 | 1 | Verified coverage (NTC + crowdsourced) |
| Cang-adieng | 386 | 2 | Crowdsourced signal only (no registered tower) |
| Cang-agong | 681 | 0 | Dead zone: no towers from any source |
| Cang-alwang | 1,041 | 0 | Dead zone: no towers from any source |
| Cang-asa | 1,808 | 0 | Dead zone: no towers from any source |
| Cang-atuyom | 413 | 0 | Dead zone: no towers from any source |
| Cang-inte | 149 | 0 | Dead zone: no towers from any source |
| Cang-isad | 152 | 0 | Dead zone: no towers from any source |
| Canghunoghunog | 533 | 0 | Dead zone: no towers from any source |
| Cangmatnog | 396 | 0 | Dead zone: no towers from any source |
| Cangmohao | 270 | 0 | Dead zone: no towers from any source |
| Cantabon | 420 | 1 | Crowdsourced signal only (no registered tower) |
| Caticugan | 851 | 1 | Crowdsourced signal only (no registered tower) |
| Dumanhog | 571 | 3 | Crowdsourced signal only (no registered tower) |
| Ibabao | 422 | 0 | Dead zone: no towers from any source |
| Lambojon | 407 | 0 | Dead zone: no towers from any source |
| Luyang | 861 | 0 | Dead zone: no towers from any source |
| Luzong | 157 | 0 | Dead zone: no towers from any source |
| Olo | 577 | 0 | Dead zone: no towers from any source |
| Pangi | 1,460 | 4 | Crowdsourced signal only (no registered tower) |
| Panlautan | 337 | 0 | Dead zone: no towers from any source |
| Pasihagon | 960 | 2 | Crowdsourced signal only (no registered tower) |
| Pili | 791 | 0 | Dead zone: no towers from any source |
| Poblacion | 1,407 | 3 | Crowdsourced signal only (no registered tower) |
| Polangyuta | 836 | 1 | Crowdsourced signal only (no registered tower) |
| Ponong | 464 | 0 | Dead zone: no towers from any source |
| Sabang | 369 | 0 | Dead zone: no towers from any source |
| San Antonio | 582 | 0 | Dead zone: no towers from any source |
| Songculan | 285 | 0 | Dead zone: no towers from any source |
| Tacdog | 510 | 2 | Registered tower only (not crowd-verified) |
| Tacloban | 1,040 | 0 | Dead zone: no towers from any source |
| Tambisan | 710 | 1 | Registered tower only (not crowd-verified) |
| Tebjong | 114 | 0 | Dead zone: no towers from any source |
| Tinago | 1,170 | 2 | Crowdsourced signal only (no registered tower) |
| Tongo | 604 | 0 | Dead zone: no towers from any source |