Guiuan comprises 60 barangays with an estimated population of 44,728. 48 of its barangays (80%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Alingarog | 491 | 0 | Dead zone: no towers from any source |
| Bagua | 640 | 0 | Dead zone: no towers from any source |
| Banaag | 406 | 0 | Dead zone: no towers from any source |
| Banahao | 512 | 0 | Dead zone: no towers from any source |
| Baras | 318 | 0 | Dead zone: no towers from any source |
| Barbo | 233 | 0 | Dead zone: no towers from any source |
| Bitaugan | 537 | 0 | Dead zone: no towers from any source |
| Bucao | 343 | 0 | Dead zone: no towers from any source |
| Buenavista | 319 | 0 | Dead zone: no towers from any source |
| Bungtod | 878 | 0 | Dead zone: no towers from any source |
| Cagdara-o | 307 | 0 | Dead zone: no towers from any source |
| Cagusu-an | 528 | 0 | Dead zone: no towers from any source |
| Camparang | 315 | 0 | Dead zone: no towers from any source |
| Campoyong | 629 | 1 | Crowdsourced signal only (no registered tower) |
| Canawayon | 656 | 0 | Dead zone: no towers from any source |
| Cantahay | 1,097 | 1 | Crowdsourced signal only (no registered tower) |
| Casuguran | 898 | 0 | Dead zone: no towers from any source |
| Cogon | 3,074 | 0 | Dead zone: no towers from any source |
| Culasi | 138 | 0 | Dead zone: no towers from any source |
| Dalaragan | 939 | 0 | Dead zone: no towers from any source |
| Gahoy | 646 | 0 | Dead zone: no towers from any source |
| Habag | 248 | 0 | Dead zone: no towers from any source |
| Hagna | 1,247 | 0 | Dead zone: no towers from any source |
| Hamorawon | 507 | 0 | Dead zone: no towers from any source |
| Hollywood | 378 | 0 | Dead zone: no towers from any source |
| Inapulangan | 640 | 0 | Dead zone: no towers from any source |
| Lupok (Pob.) | 1,217 | 0 | Dead zone: no towers from any source |
| Mayana | 1,231 | 0 | Dead zone: no towers from any source |
| Ngolos | 1,082 | 0 | Dead zone: no towers from any source |
| Pagbabangnan | 442 | 0 | Dead zone: no towers from any source |
| Pagnamitan | 130 | 0 | Dead zone: no towers from any source |
| Poblacion Ward 1 | 0 | 0 | Dead zone: no towers from any source |
| Poblacion Ward 10 | 1,302 | 0 | Dead zone: no towers from any source |
| Poblacion Ward 11 | 1,516 | 0 | Dead zone: no towers from any source |
| Poblacion Ward 12 | 1,939 | 0 | Dead zone: no towers from any source |
| Poblacion Ward 2 | 65 | 7 | Crowdsourced signal only (no registered tower) |
| Poblacion Ward 3 | 39 | 0 | Dead zone: no towers from any source |
| Poblacion Ward 4 | 1,077 | 0 | Dead zone: no towers from any source |
| Poblacion Ward 4-A | 329 | 3 | Crowdsourced signal only (no registered tower) |
| Poblacion Ward 5 | 49 | 1 | Crowdsourced signal only (no registered tower) |
| Poblacion Ward 6 | 377 | 6 | Crowdsourced signal only (no registered tower) |
| Poblacion Ward 7 | 780 | 9 | Crowdsourced signal only (no registered tower) |
| Poblacion Ward 8 | 2,023 | 5 | Crowdsourced signal only (no registered tower) |
| Poblacion Ward 9 | 158 | 0 | Dead zone: no towers from any source |
| Poblacion Ward 9-A | 1,299 | 0 | Dead zone: no towers from any source |
| Salug | 636 | 0 | Dead zone: no towers from any source |
| San Antonio | 246 | 0 | Dead zone: no towers from any source |
| San Jose | 185 | 0 | Dead zone: no towers from any source |
| San Juan | 248 | 0 | Dead zone: no towers from any source |
| San Pedro | 530 | 0 | Dead zone: no towers from any source |
| Santo Niño | 1,956 | 1 | Crowdsourced signal only (no registered tower) |
| Sapao | 933 | 0 | Dead zone: no towers from any source |
| Sulangan | 3,645 | 7 | Crowdsourced signal only (no registered tower) |
| Suluan | 1,049 | 0 | Dead zone: no towers from any source |
| Surok | 1,488 | 1 | Crowdsourced signal only (no registered tower) |
| Tagporo | 389 | 0 | Dead zone: no towers from any source |
| Taytay | 197 | 0 | Dead zone: no towers from any source |
| Timala | 896 | 2 | Crowdsourced signal only (no registered tower) |
| Trinidad | 221 | 0 | Dead zone: no towers from any source |
| Victory Island | 130 | 0 | Dead zone: no towers from any source |