Sampaloc comprises 14 barangays with an estimated population of 11,293. 12 of its barangays (86%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Alupay | 383 | 0 | Dead zone: no towers from any source |
| Apasan | 347 | 0 | Dead zone: no towers from any source |
| Banot | 842 | 1 | Crowdsourced signal only (no registered tower) |
| Bataan | 336 | 0 | Dead zone: no towers from any source |
| Bayongon | 1,368 | 1 | Crowdsourced signal only (no registered tower) |
| Bilucao | 658 | 0 | Dead zone: no towers from any source |
| Caldong | 282 | 0 | Dead zone: no towers from any source |
| Ibabang Owain | 166 | 0 | Dead zone: no towers from any source |
| Ilayang Owain | 1,803 | 0 | Dead zone: no towers from any source |
| Mamala | 870 | 0 | Dead zone: no towers from any source |
| San Bueno | 247 | 0 | Dead zone: no towers from any source |
| San Isidro (Pob.) | 951 | 0 | Dead zone: no towers from any source |
| San Roque (Pob.) | 2,987 | 0 | Dead zone: no towers from any source |
| Taquico | 53 | 0 | Dead zone: no towers from any source |