Mambajao (Capital) comprises 15 barangays with an estimated population of 35,472. 3 of its barangays (20%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Agoho | 2,074 | 5 | Verified coverage (NTC + crowdsourced) |
| Anito | 1,219 | 2 | Crowdsourced signal only (no registered tower) |
| Balbagon | 2,241 | 15 | Verified coverage (NTC + crowdsourced) |
| Baylao | 2,170 | 6 | Crowdsourced signal only (no registered tower) |
| Benhaan | 960 | 0 | Dead zone: no towers from any source |
| Bug-ong | 728 | 1 | Crowdsourced signal only (no registered tower) |
| Kuguita | 1,162 | 0 | Dead zone: no towers from any source |
| Magting | 1,643 | 4 | Crowdsourced signal only (no registered tower) |
| Naasag | 964 | 0 | Dead zone: no towers from any source |
| Pandan | 1,996 | 3 | Crowdsourced signal only (no registered tower) |
| Poblacion | 12,382 | 13 | Verified coverage (NTC + crowdsourced) |
| Soro-soro | 948 | 1 | Verified coverage (NTC + crowdsourced) |
| Tagdo | 1,553 | 7 | Crowdsourced signal only (no registered tower) |
| Tupsan | 1,955 | 4 | Registered tower only (not crowd-verified) |
| Yumbing | 3,477 | 4 | Verified coverage (NTC + crowdsourced) |