Kiamba comprises 19 barangays with an estimated population of 61,466. 11 of its barangays (58%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Badtasan | 2,846 | 3 | Crowdsourced signal only (no registered tower) |
| Datu Dani | 2,104 | 0 | Dead zone: no towers from any source |
| Gasi | 1,718 | 0 | Dead zone: no towers from any source |
| Kapate | 2,096 | 1 | Crowdsourced signal only (no registered tower) |
| Katubao | 4,286 | 0 | Dead zone: no towers from any source |
| Kayupo | 2,611 | 0 | Dead zone: no towers from any source |
| Kling (Lumit) | 1,329 | 4 | Crowdsourced signal only (no registered tower) |
| Lagundi | 1,816 | 1 | Crowdsourced signal only (no registered tower) |
| Lebe | 1,099 | 0 | Dead zone: no towers from any source |
| Lomuyon | 4,547 | 0 | Dead zone: no towers from any source |
| Luma | 1,084 | 0 | Dead zone: no towers from any source |
| Maligang | 2,662 | 0 | Dead zone: no towers from any source |
| Nalus | 3,329 | 2 | Crowdsourced signal only (no registered tower) |
| Poblacion | 14,936 | 5 | Crowdsourced signal only (no registered tower) |
| Salakit | 2,844 | 0 | Dead zone: no towers from any source |
| Suli | 2,877 | 3 | Crowdsourced signal only (no registered tower) |
| Tablao | 2,295 | 0 | Dead zone: no towers from any source |
| Tamadang | 1,026 | 0 | Dead zone: no towers from any source |
| Tambilil | 5,961 | 2 | Crowdsourced signal only (no registered tower) |