Sadanga comprises 8 barangays with an estimated population of 8,475. 8 of its barangays (100%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Anabel | 999 | 0 | Dead zone: no towers from any source |
| Bekigan | 939 | 0 | Dead zone: no towers from any source |
| Belwang | 899 | 0 | Dead zone: no towers from any source |
| Betwagan | 1,878 | 0 | Dead zone: no towers from any source |
| Demang | 397 | 0 | Dead zone: no towers from any source |
| Poblacion | 880 | 0 | Dead zone: no towers from any source |
| Sacasacan | 944 | 0 | Dead zone: no towers from any source |
| Saclit | 1,539 | 0 | Dead zone: no towers from any source |