Santa Maria comprises 24 barangays with an estimated population of 247,511. 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 |
|---|---|---|---|
| Bagbaguin | 2,496 | 33 | Crowdsourced signal only (no registered tower) |
| Balasing | 14,478 | 18 | Crowdsourced signal only (no registered tower) |
| Buenavista | 5,961 | 12 | Crowdsourced signal only (no registered tower) |
| Bulac | 14,615 | 15 | Crowdsourced signal only (no registered tower) |
| Camangyanan | 5,198 | 1 | Crowdsourced signal only (no registered tower) |
| Catmon | 17,651 | 5 | Crowdsourced signal only (no registered tower) |
| Cay Pombo | 10,310 | 35 | Crowdsourced signal only (no registered tower) |
| Caysio | 3,934 | 6 | Crowdsourced signal only (no registered tower) |
| Guyong | 11,099 | 101 | Crowdsourced signal only (no registered tower) |
| Lalakhan | 3,605 | 6 | Crowdsourced signal only (no registered tower) |
| Mag-asawang Sapa | 5,917 | 6 | Crowdsourced signal only (no registered tower) |
| Mahabang Parang | 2,857 | 18 | Crowdsourced signal only (no registered tower) |
| Manggahan | 3,591 | 7 | Crowdsourced signal only (no registered tower) |
| Parada | 10,872 | 11 | Crowdsourced signal only (no registered tower) |
| Poblacion | 5,226 | 34 | Crowdsourced signal only (no registered tower) |
| Pulong Buhangin | 65,152 | 98 | Crowdsourced signal only (no registered tower) |
| San Gabriel | 10,539 | 15 | Crowdsourced signal only (no registered tower) |
| San Jose Patag | 10,653 | 4 | Crowdsourced signal only (no registered tower) |
| San Vicente | 15,756 | 4 | Crowdsourced signal only (no registered tower) |
| Silangan | 1,875 | 1 | Crowdsourced signal only (no registered tower) |
| Sta. Clara | 10,020 | 50 | Crowdsourced signal only (no registered tower) |
| Sta. Cruz | 4,129 | 25 | Crowdsourced signal only (no registered tower) |
| Tabing Bakod | 2,915 | 4 | Crowdsourced signal only (no registered tower) |
| Tumana | 8,662 | 8 | Crowdsourced signal only (no registered tower) |