Alaminos comprises 15 barangays with an estimated population of 54,201. 3 of its barangays (20%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Barangay I (Pob.) | 4,176 | 11 | Crowdsourced signal only (no registered tower) |
| Barangay II (Pob.) | 1,831 | 7 | Crowdsourced signal only (no registered tower) |
| Barangay III (Pob.) | 3,479 | 2 | Crowdsourced signal only (no registered tower) |
| Barangay IV (Pob.) | 947 | 9 | Crowdsourced signal only (no registered tower) |
| Del Carmen | 2,779 | 2 | Crowdsourced signal only (no registered tower) |
| Palma | 4,084 | 0 | Dead zone: no towers from any source |
| San Agustin | 8,418 | 33 | Crowdsourced signal only (no registered tower) |
| San Andres | 3,915 | 16 | Crowdsourced signal only (no registered tower) |
| San Benito | 7,525 | 18 | Crowdsourced signal only (no registered tower) |
| San Gregorio | 4,317 | 0 | Dead zone: no towers from any source |
| San Ildefonso | 3,200 | 1 | Crowdsourced signal only (no registered tower) |
| San Juan | 1,773 | 28 | Crowdsourced signal only (no registered tower) |
| San Miguel | 1,871 | 3 | Crowdsourced signal only (no registered tower) |
| San Roque | 1,342 | 0 | Dead zone: no towers from any source |
| Santa Rosa | 4,544 | 8 | Crowdsourced signal only (no registered tower) |