Zamboanga del Norte has 691 barangays across 27 municipalities. 568 barangays (82%) are connectivity dead zones.
| Municipality | Barangays | Dead zones |
|---|---|---|
| Bacungan (Leon T. Postigo) | 18 | 14 (78%) |
| Baliguian | 17 | 16 (94%) |
| Dapitan City | 50 | 31 (62%) |
| Dipolog City (Capital) | 21 | 5 (24%) |
| Godod | 17 | 17 (100%) |
| Gutalac | 33 | 31 (94%) |
| Jose Dalman (Ponot) | 18 | 15 (83%) |
| Kalawit | 14 | 9 (64%) |
| Katipunan | 30 | 26 (87%) |
| La Libertad | 13 | 13 (100%) |
| Labason | 20 | 10 (50%) |
| Liloy | 37 | 26 (70%) |
| Manukan | 22 | 16 (73%) |
| Mutia | 16 | 16 (100%) |
| Piñan (New Piñan) | 22 | 20 (91%) |
| Polanco | 30 | 25 (83%) |
| Pres. Manuel A. Roxas | 31 | 28 (90%) |
| Rizal | 22 | 22 (100%) |
| Salug | 23 | 19 (83%) |
| Sergio Osmeña Sr. | 39 | 39 (100%) |
| Siayan | 22 | 22 (100%) |
| Sibuco | 28 | 28 (100%) |
| Sibutad | 16 | 16 (100%) |
| Sindangan | 52 | 37 (71%) |
| Siocon | 26 | 22 (85%) |
| Sirawai | 34 | 32 (94%) |
| Tampilisan | 20 | 13 (65%) |