Siniloan comprises 20 barangays with an estimated population of 41,974. 5 of its barangays (25%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Acevida | 5,189 | 3 | Crowdsourced signal only (no registered tower) |
| Bagong Pag-Asa (Pob.) | 294 | 2 | Crowdsourced signal only (no registered tower) |
| Bagumbarangay (Pob.) | 0 | 0 | Dead zone: no towers from any source |
| Buhay | 220 | 1 | Crowdsourced signal only (no registered tower) |
| G. Redor (Pob.) | 177 | 0 | Dead zone: no towers from any source |
| Gen. Luna | 315 | 0 | Dead zone: no towers from any source |
| Halayhayin | 5,266 | 5 | Crowdsourced signal only (no registered tower) |
| J. Rizal (Pob.) | 276 | 0 | Dead zone: no towers from any source |
| Kapatalan | 543 | 0 | Dead zone: no towers from any source |
| Laguio | 789 | 10 | Crowdsourced signal only (no registered tower) |
| Liyang | 1,116 | 7 | Crowdsourced signal only (no registered tower) |
| Llavac | 1,759 | 7 | Crowdsourced signal only (no registered tower) |
| Macatad | 5,749 | 17 | Crowdsourced signal only (no registered tower) |
| Magsaysay | 736 | 7 | Crowdsourced signal only (no registered tower) |
| Mayatba | 1,006 | 9 | Crowdsourced signal only (no registered tower) |
| Mendiola | 15,363 | 9 | Crowdsourced signal only (no registered tower) |
| P. Burgos | 888 | 3 | Crowdsourced signal only (no registered tower) |
| Pandeno | 1,115 | 6 | Crowdsourced signal only (no registered tower) |
| Salubungan | 734 | 5 | Crowdsourced signal only (no registered tower) |
| Wawa | 439 | 5 | Crowdsourced signal only (no registered tower) |