Sapang Dalaga comprises 28 barangays with an estimated population of 32,694. 22 of its barangays (79%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Agapito Yap, Sr. (Napilan) | 1,218 | 0 | Dead zone: no towers from any source |
| Bautista | 338 | 0 | Dead zone: no towers from any source |
| Bitibut | 4,291 | 0 | Dead zone: no towers from any source |
| Boundary | 1,272 | 1 | Crowdsourced signal only (no registered tower) |
| Caluya | 415 | 1 | Crowdsourced signal only (no registered tower) |
| Capundag | 1,418 | 0 | Dead zone: no towers from any source |
| Casul | 986 | 0 | Dead zone: no towers from any source |
| Dalumpinas | 2,370 | 0 | Dead zone: no towers from any source |
| Dasa | 420 | 0 | Dead zone: no towers from any source |
| Dioyo | 1,109 | 1 | Registered tower only (not crowd-verified) |
| Disoy | 299 | 0 | Dead zone: no towers from any source |
| El Paraiso | 586 | 0 | Dead zone: no towers from any source |
| Guinabot | 1,182 | 0 | Dead zone: no towers from any source |
| Libertad | 858 | 1 | Registered tower only (not crowd-verified) |
| Locus | 777 | 1 | Registered tower only (not crowd-verified) |
| Macabibo | 480 | 0 | Dead zone: no towers from any source |
| Manla | 560 | 0 | Dead zone: no towers from any source |
| Masubong | 449 | 0 | Dead zone: no towers from any source |
| Medallo | 1,731 | 0 | Dead zone: no towers from any source |
| Poblacion | 5,038 | 3 | Verified coverage (NTC + crowdsourced) |
| Salimpuno | 994 | 0 | Dead zone: no towers from any source |
| San Agustin | 1,069 | 0 | Dead zone: no towers from any source |
| Sapang Ama | 528 | 0 | Dead zone: no towers from any source |
| Sinaad | 940 | 0 | Dead zone: no towers from any source |
| Sipac | 2,046 | 0 | Dead zone: no towers from any source |
| Sixto Velez, Sr. | 406 | 0 | Dead zone: no towers from any source |
| Upper Bautista | 363 | 0 | Dead zone: no towers from any source |
| Ventura | 551 | 0 | Dead zone: no towers from any source |