Oriental Mindoro has 436 barangays across 15 municipalities. 295 barangays (68%) are connectivity dead zones.
| Municipality | Barangays | Dead zones |
|---|---|---|
| Baco | 28 | 28 (100%) |
| Bansud | 14 | 10 (71%) |
| Bongabong | 37 | 25 (68%) |
| Bulalacao (San Pedro) | 15 | 13 (87%) |
| City of Calapan (Capital) | 62 | 14 (23%) |
| Gloria | 28 | 25 (89%) |
| Mansalay | 17 | 16 (94%) |
| Naujan | 71 | 53 (75%) |
| Pinamalayan | 38 | 30 (79%) |
| Pola | 24 | 21 (88%) |
| Puerto Galera | 14 | 2 (14%) |
| Roxas | 20 | 8 (40%) |
| San Teodoro | 8 | 7 (88%) |
| Socorro | 27 | 18 (67%) |
| Victoria | 33 | 25 (76%) |