Estancia comprises 25 barangays with an estimated population of 44,140. 17 of its barangays (68%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bayas (Bayas Island) | 948 | 0 | Dead zone: no towers from any source |
| Bayuyan | 3,662 | 1 | Crowdsourced signal only (no registered tower) |
| Botongon | 3,576 | 0 | Dead zone: no towers from any source |
| Bulaqueña | 4,067 | 0 | Dead zone: no towers from any source |
| Calapdan | 771 | 0 | Dead zone: no towers from any source |
| Cano-an | 2,789 | 1 | Crowdsourced signal only (no registered tower) |
| Daan Banua | 1,516 | 0 | Dead zone: no towers from any source |
| Daculan | 1,718 | 0 | Dead zone: no towers from any source |
| Gogo | 1,934 | 0 | Dead zone: no towers from any source |
| Jolog | 172 | 0 | Dead zone: no towers from any source |
| Loguingot (Loguingot Island) | 308 | 0 | Dead zone: no towers from any source |
| Lonoy (Roman Mosqueda) | 1,739 | 1 | Crowdsourced signal only (no registered tower) |
| Lumbia (Ana Cuenca) | 2,418 | 0 | Dead zone: no towers from any source |
| Malbog | 770 | 1 | Crowdsourced signal only (no registered tower) |
| Manipulon | 55 | 0 | Dead zone: no towers from any source |
| Pa-on | 2,599 | 1 | Crowdsourced signal only (no registered tower) |
| Poblacion Zone 1 | 1,325 | 0 | Dead zone: no towers from any source |
| Poblacion Zone II | 4,963 | 7 | Crowdsourced signal only (no registered tower) |
| Poblacion Zone III | 570 | 0 | Dead zone: no towers from any source |
| San Roque | 898 | 0 | Dead zone: no towers from any source |
| Santa Ana | 647 | 1 | Crowdsourced signal only (no registered tower) |
| Tabu-an | 946 | 0 | Dead zone: no towers from any source |
| Tacbuyan | 3,101 | 0 | Dead zone: no towers from any source |
| Tanza | 1,458 | 0 | Dead zone: no towers from any source |
| Villa Pani-an | 1,190 | 2 | Crowdsourced signal only (no registered tower) |