Bay comprises 15 barangays with an estimated population of 76,456. 2 of its barangays (13%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bitin | 10,097 | 4 | Crowdsourced signal only (no registered tower) |
| Calo | 4,478 | 7 | Crowdsourced signal only (no registered tower) |
| Dila | 9,653 | 23 | Crowdsourced signal only (no registered tower) |
| Maitim | 6,524 | 7 | Crowdsourced signal only (no registered tower) |
| Masaya | 6,930 | 3 | Crowdsourced signal only (no registered tower) |
| Paciano Rizal | 5,859 | 15 | Crowdsourced signal only (no registered tower) |
| Puypuy | 3,112 | 25 | Crowdsourced signal only (no registered tower) |
| San Agustin (Pob.) | 667 | 4 | Crowdsourced signal only (no registered tower) |
| San Antonio | 6,546 | 0 | Dead zone: no towers from any source |
| San Isidro | 3,247 | 6 | Crowdsourced signal only (no registered tower) |
| San Nicolas (Pob.) | 1,970 | 1 | Crowdsourced signal only (no registered tower) |
| Santa Cruz | 2,189 | 5 | Crowdsourced signal only (no registered tower) |
| Santo Domingo | 8,942 | 20 | Crowdsourced signal only (no registered tower) |
| Tagumpay | 1,960 | 0 | Dead zone: no towers from any source |
| Tranca | 4,282 | 4 | Crowdsourced signal only (no registered tower) |