Quezon has 1242 barangays across 41 municipalities. 847 barangays (68%) are connectivity dead zones.
| Municipality | Barangays | Dead zones |
|---|---|---|
| Agdangan | 12 | 6 (50%) |
| Alabat | 19 | 19 (100%) |
| Atimonan | 42 | 21 (50%) |
| Buenavista | 37 | 37 (100%) |
| Burdeos | 13 | 10 (77%) |
| Calauag | 81 | 62 (77%) |
| Candelaria | 25 | 12 (48%) |
| Catanauan | 46 | 34 (74%) |
| City of Tayabas | 66 | 39 (59%) |
| Dolores | 16 | 11 (69%) |
| General Luna | 27 | 17 (63%) |
| General Nakar | 19 | 14 (74%) |
| Guinayangan | 54 | 50 (93%) |
| Gumaca | 59 | 36 (61%) |
| Infanta | 36 | 16 (44%) |
| Jomalig | 5 | 5 (100%) |
| Lopez | 95 | 77 (81%) |
| Lucban | 32 | 13 (41%) |
| Lucena City (Capital) | 33 | 0 (0%) |
| Macalelon | 30 | 24 (80%) |
| Mauban | 40 | 35 (88%) |
| Mulanay | 28 | 24 (86%) |
| Padre Burgos | 22 | 9 (41%) |
| Pagbilao | 27 | 10 (37%) |
| Panukulan | 13 | 12 (92%) |
| Patnanungan | 6 | 4 (67%) |
| Perez | 14 | 14 (100%) |
| Pitogo | 39 | 30 (77%) |
| Plaridel | 9 | 4 (44%) |
| Polillo | 20 | 18 (90%) |
| Quezon | 24 | 24 (100%) |
| Real | 17 | 5 (29%) |
| Sampaloc | 14 | 12 (86%) |
| San Andres | 7 | 6 (86%) |
| San Antonio | 20 | 17 (85%) |
| San Francisco (Aurora) | 16 | 15 (94%) |
| San Narciso | 24 | 22 (92%) |
| Sariaya | 43 | 12 (28%) |
| Tagkawayan | 45 | 29 (64%) |
| Tiaong | 31 | 14 (45%) |
| Unisan | 36 | 28 (78%) |