Teresa comprises 9 barangays with an estimated population of 53,709. 0 of its barangays (0%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bagumbayan | 6,559 | 58 | Crowdsourced signal only (no registered tower) |
| Calumpang Santo Cristo | 1,408 | 1 | Crowdsourced signal only (no registered tower) |
| Dalig | 13,406 | 43 | Crowdsourced signal only (no registered tower) |
| Dulumbayan | 11,036 | 36 | Crowdsourced signal only (no registered tower) |
| May-Iba | 12,114 | 62 | Crowdsourced signal only (no registered tower) |
| Poblacion | 2,062 | 11 | Crowdsourced signal only (no registered tower) |
| Prinza | 1,714 | 10 | Crowdsourced signal only (no registered tower) |
| San Gabriel | 2,731 | 20 | Crowdsourced signal only (no registered tower) |
| San Roque | 2,679 | 21 | Crowdsourced signal only (no registered tower) |