Almagro comprises 23 barangays with an estimated population of 16,071. 23 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 |
|---|---|---|---|
| Bacjao | 2,067 | 0 | Dead zone: no towers from any source |
| Biasong I | 851 | 0 | Dead zone: no towers from any source |
| Biasong II | 855 | 0 | Dead zone: no towers from any source |
| Costa Rica | 215 | 0 | Dead zone: no towers from any source |
| Costa Rica II | 318 | 0 | Dead zone: no towers from any source |
| Guin-ansan | 612 | 0 | Dead zone: no towers from any source |
| Imelda (Badjang) | 428 | 0 | Dead zone: no towers from any source |
| Kerikite | 1,107 | 0 | Dead zone: no towers from any source |
| Lunang I (Look) | 738 | 0 | Dead zone: no towers from any source |
| Lunang II | 829 | 0 | Dead zone: no towers from any source |
| Mabuhay | 1,129 | 0 | Dead zone: no towers from any source |
| Magsaysay | 471 | 0 | Dead zone: no towers from any source |
| Malobago | 367 | 0 | Dead zone: no towers from any source |
| Marasbaras | 937 | 0 | Dead zone: no towers from any source |
| Panjobjoban I | 368 | 0 | Dead zone: no towers from any source |
| Panjobjoban II | 715 | 0 | Dead zone: no towers from any source |
| Poblacion | 440 | 0 | Dead zone: no towers from any source |
| Roño | 222 | 0 | Dead zone: no towers from any source |
| San Isidro | 700 | 0 | Dead zone: no towers from any source |
| San Jose | 500 | 0 | Dead zone: no towers from any source |
| Talahid | 1,025 | 0 | Dead zone: no towers from any source |
| Tonga-tonga | 335 | 0 | Dead zone: no towers from any source |
| Veloso | 842 | 0 | Dead zone: no towers from any source |