Nabas comprises 20 barangays with an estimated population of 40,550. 7 of its barangays (35%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Alimbo-Baybay | 737 | 0 | Dead zone: no towers from any source |
| Buenafortuna | 2,120 | 0 | Dead zone: no towers from any source |
| Buenasuerte | 1,579 | 3 | Crowdsourced signal only (no registered tower) |
| Buenavista | 1,724 | 0 | Dead zone: no towers from any source |
| Gibon | 2,441 | 7 | Crowdsourced signal only (no registered tower) |
| Habana | 889 | 2 | Crowdsourced signal only (no registered tower) |
| Laserna | 3,404 | 0 | Dead zone: no towers from any source |
| Libertad | 1,069 | 7 | Crowdsourced signal only (no registered tower) |
| Magallanes | 1,249 | 0 | Dead zone: no towers from any source |
| Matabana | 832 | 1 | Crowdsourced signal only (no registered tower) |
| Nagustan | 3,706 | 5 | Crowdsourced signal only (no registered tower) |
| Pawa | 385 | 0 | Dead zone: no towers from any source |
| Pinatuad | 1,232 | 5 | Crowdsourced signal only (no registered tower) |
| Poblacion | 2,327 | 5 | Crowdsourced signal only (no registered tower) |
| Rizal | 2,006 | 3 | Crowdsourced signal only (no registered tower) |
| Solido | 2,351 | 6 | Crowdsourced signal only (no registered tower) |
| Tagororoc | 721 | 0 | Dead zone: no towers from any source |
| Toledo | 3,363 | 6 | Crowdsourced signal only (no registered tower) |
| Unidos | 3,581 | 5 | Crowdsourced signal only (no registered tower) |
| Union | 4,834 | 20 | Crowdsourced signal only (no registered tower) |