Santa Marcela comprises 13 barangays with an estimated population of 12,549. 12 of its barangays (92%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Barocboc | 936 | 0 | Dead zone: no towers from any source |
| Consuelo | 347 | 0 | Dead zone: no towers from any source |
| Emiliana | 1,967 | 0 | Dead zone: no towers from any source |
| Imelda (Sipa Annex) | 936 | 0 | Dead zone: no towers from any source |
| Malekkeg | 1,213 | 0 | Dead zone: no towers from any source |
| Marcela (Pob.) | 861 | 1 | Crowdsourced signal only (no registered tower) |
| Nueva | 879 | 0 | Dead zone: no towers from any source |
| Panay | 850 | 0 | Dead zone: no towers from any source |
| San Antonio | 1,529 | 0 | Dead zone: no towers from any source |
| San Carlos | 967 | 0 | Dead zone: no towers from any source |
| San Juan | 412 | 0 | Dead zone: no towers from any source |
| San Mariano | 1,233 | 0 | Dead zone: no towers from any source |
| Sipa Proper | 419 | 0 | Dead zone: no towers from any source |