Lantawan comprises 25 barangays with an estimated population of 6,173. 25 of its barangays (100%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Atong-atong | 326 | 0 | Dead zone: no towers from any source |
| Bagbagon | 408 | 0 | Dead zone: no towers from any source |
| Baungis | 295 | 0 | Dead zone: no towers from any source |
| Bulan-bulan | 167 | 0 | Dead zone: no towers from any source |
| Bulanza | 128 | 0 | Dead zone: no towers from any source |
| Calayan | 172 | 0 | Dead zone: no towers from any source |
| Calugusan | 146 | 0 | Dead zone: no towers from any source |
| Canibungan | 565 | 0 | Dead zone: no towers from any source |
| Landugan | 154 | 0 | Dead zone: no towers from any source |
| Lantawan Proper (Pob.) | 134 | 0 | Dead zone: no towers from any source |
| Lawi-lawi | 117 | 0 | Dead zone: no towers from any source |
| Lawila | 104 | 0 | Dead zone: no towers from any source |
| Lower Bañas | 139 | 0 | Dead zone: no towers from any source |
| Lower Manggas | 154 | 0 | Dead zone: no towers from any source |
| Luuk-Maluha | 102 | 0 | Dead zone: no towers from any source |
| Matarling | 272 | 0 | Dead zone: no towers from any source |
| Matikang | 98 | 0 | Dead zone: no towers from any source |
| Pamucalin | 587 | 0 | Dead zone: no towers from any source |
| Paniongan | 234 | 0 | Dead zone: no towers from any source |
| Parian-Baunoh | 402 | 0 | Dead zone: no towers from any source |
| Suba-an (Pangasahan) | 41 | 0 | Dead zone: no towers from any source |
| Switch Yakal | 665 | 0 | Dead zone: no towers from any source |
| Tairan | 268 | 0 | Dead zone: no towers from any source |
| Upper Bañas | 304 | 0 | Dead zone: no towers from any source |
| Upper Manggas | 191 | 0 | Dead zone: no towers from any source |