Mabini comprises 22 barangays with an estimated population of 23,970. 22 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 |
|---|---|---|---|
| Abaca | 1,258 | 0 | Dead zone: no towers from any source |
| Abad Santos | 332 | 0 | Dead zone: no towers from any source |
| Aguipo | 1,810 | 0 | Dead zone: no towers from any source |
| Baybayon | 1,412 | 0 | Dead zone: no towers from any source |
| Bulawan | 414 | 0 | Dead zone: no towers from any source |
| Cabidian | 553 | 0 | Dead zone: no towers from any source |
| Cawayanan | 935 | 0 | Dead zone: no towers from any source |
| Concepcion (Banlas) | 1,062 | 0 | Dead zone: no towers from any source |
| Del Mar | 1,002 | 0 | Dead zone: no towers from any source |
| Lungsoda-an | 778 | 0 | Dead zone: no towers from any source |
| Marcelo | 767 | 0 | Dead zone: no towers from any source |
| Minol | 1,213 | 0 | Dead zone: no towers from any source |
| Paraiso | 825 | 0 | Dead zone: no towers from any source |
| Poblacion I | 1,393 | 0 | Dead zone: no towers from any source |
| Poblacion II | 1,584 | 0 | Dead zone: no towers from any source |
| San Isidro | 971 | 0 | Dead zone: no towers from any source |
| San Jose | 1,746 | 0 | Dead zone: no towers from any source |
| San Rafael | 731 | 0 | Dead zone: no towers from any source |
| San Roque (Cabulao) | 3,228 | 0 | Dead zone: no towers from any source |
| Tambo | 641 | 0 | Dead zone: no towers from any source |
| Tangkigan | 1,038 | 0 | Dead zone: no towers from any source |
| Valaga | 277 | 0 | Dead zone: no towers from any source |