Santa Cruz comprises 49 barangays with an estimated population of 41,260. 37 of its barangays (76%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Amarao | 539 | 0 | Dead zone: no towers from any source |
| Babayoan | 666 | 0 | Dead zone: no towers from any source |
| Bacsayan | 574 | 0 | Dead zone: no towers from any source |
| Banay | 418 | 0 | Dead zone: no towers from any source |
| Bayugao Este | 284 | 2 | Crowdsourced signal only (no registered tower) |
| Bayugao Oeste | 820 | 0 | Dead zone: no towers from any source |
| Besalan | 510 | 0 | Dead zone: no towers from any source |
| Bugbuga | 601 | 0 | Dead zone: no towers from any source |
| Calaoaan | 1,963 | 0 | Dead zone: no towers from any source |
| Camanggaan | 1,323 | 1 | Crowdsourced signal only (no registered tower) |
| Candalican | 252 | 0 | Dead zone: no towers from any source |
| Capariaan | 2,012 | 3 | Crowdsourced signal only (no registered tower) |
| Casilagan | 973 | 0 | Dead zone: no towers from any source |
| Coscosnong | 618 | 0 | Dead zone: no towers from any source |
| Daligan | 799 | 0 | Dead zone: no towers from any source |
| Dili | 1,869 | 1 | Crowdsourced signal only (no registered tower) |
| Gabor Norte | 827 | 0 | Dead zone: no towers from any source |
| Gabor Sur | 553 | 0 | Dead zone: no towers from any source |
| Lalong | 610 | 0 | Dead zone: no towers from any source |
| Lantag | 666 | 0 | Dead zone: no towers from any source |
| Las-ud | 432 | 0 | Dead zone: no towers from any source |
| Mambog | 1,698 | 13 | Crowdsourced signal only (no registered tower) |
| Mantanas | 879 | 2 | Crowdsourced signal only (no registered tower) |
| Nagtengnga | 904 | 0 | Dead zone: no towers from any source |
| Padaoil | 226 | 0 | Dead zone: no towers from any source |
| Paratong | 618 | 2 | Crowdsourced signal only (no registered tower) |
| Pattiqui | 358 | 0 | Dead zone: no towers from any source |
| Pidpid | 1,174 | 0 | Dead zone: no towers from any source |
| Pilar | 1,386 | 0 | Dead zone: no towers from any source |
| Pinipin | 939 | 0 | Dead zone: no towers from any source |
| Poblacion Este | 224 | 0 | Dead zone: no towers from any source |
| Poblacion Norte | 1,106 | 0 | Dead zone: no towers from any source |
| Poblacion Sur | 1,422 | 0 | Dead zone: no towers from any source |
| Poblacion Weste | 329 | 0 | Dead zone: no towers from any source |
| Quinfermin | 348 | 0 | Dead zone: no towers from any source |
| Quinsoriano | 240 | 0 | Dead zone: no towers from any source |
| Sagat | 1,079 | 2 | Crowdsourced signal only (no registered tower) |
| San Antonio | 710 | 0 | Dead zone: no towers from any source |
| San Jose | 1,761 | 0 | Dead zone: no towers from any source |
| San Pedro | 433 | 0 | Dead zone: no towers from any source |
| Saoat | 467 | 1 | Crowdsourced signal only (no registered tower) |
| Sevilla | 1,086 | 1 | Crowdsourced signal only (no registered tower) |
| Sidaoen | 1,139 | 6 | Crowdsourced signal only (no registered tower) |
| Suyo | 1,249 | 0 | Dead zone: no towers from any source |
| Tampugo | 300 | 0 | Dead zone: no towers from any source |
| Turod | 870 | 0 | Dead zone: no towers from any source |
| Villa Garcia | 889 | 1 | Crowdsourced signal only (no registered tower) |
| Villa Hermosa | 1,767 | 0 | Dead zone: no towers from any source |
| Villa Laurencia | 350 | 0 | Dead zone: no towers from any source |