Maragondon comprises 27 barangays with an estimated population of 40,171. 8 of its barangays (30%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Bucal I | 5,728 | 5 | Crowdsourced signal only (no registered tower) |
| Bucal II | 1,532 | 1 | Crowdsourced signal only (no registered tower) |
| Bucal III A | 262 | 1 | Crowdsourced signal only (no registered tower) |
| Bucal III B | 547 | 0 | Dead zone: no towers from any source |
| Bucal IV A | 170 | 1 | Crowdsourced signal only (no registered tower) |
| Bucal IV B | 1,807 | 4 | Crowdsourced signal only (no registered tower) |
| Caingin Pob. (Barangay 3) | 1,805 | 0 | Dead zone: no towers from any source |
| Garita I A | 1,619 | 9 | Crowdsourced signal only (no registered tower) |
| Garita I B | 1,014 | 1 | Crowdsourced signal only (no registered tower) |
| Layong Mabilog | 670 | 0 | Dead zone: no towers from any source |
| Mabato | 1,361 | 5 | Crowdsourced signal only (no registered tower) |
| Pantihan I (Balayungan) | 1,277 | 7 | Crowdsourced signal only (no registered tower) |
| Pantihan II (Sagbat) | 647 | 2 | Crowdsourced signal only (no registered tower) |
| Pantihan III (Pook na Munti) | 1,727 | 4 | Crowdsourced signal only (no registered tower) |
| Pantihan IV (Pook ni Sara) | 756 | 5 | Crowdsourced signal only (no registered tower) |
| Patungan | 1,601 | 14 | Crowdsourced signal only (no registered tower) |
| Pinagsanhan I A | 2,278 | 0 | Dead zone: no towers from any source |
| Pinagsanhan I B | 2,731 | 3 | Crowdsourced signal only (no registered tower) |
| Poblacion I A | 412 | 0 | Dead zone: no towers from any source |
| Poblacion I B | 564 | 0 | Dead zone: no towers from any source |
| Poblacion II A | 709 | 0 | Dead zone: no towers from any source |
| Poblacion II B | 1,185 | 0 | Dead zone: no towers from any source |
| San Miguel I A (Caputatan) | 1,864 | 7 | Crowdsourced signal only (no registered tower) |
| San Miguel I B | 2,007 | 14 | Crowdsourced signal only (no registered tower) |
| Talipusngo | 2,755 | 4 | Crowdsourced signal only (no registered tower) |
| Tulay Kanluran | 1,509 | 1 | Crowdsourced signal only (no registered tower) |
| Tulay Silangan | 1,634 | 2 | Crowdsourced signal only (no registered tower) |