Tanay comprises 20 barangays with an estimated population of 118,453. 6 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 |
|---|---|---|---|
| Cayabu | 94 | 0 | Dead zone: no towers from any source |
| Cuyambay | 5,515 | 49 | Crowdsourced signal only (no registered tower) |
| Daraitan | 8,182 | 4 | Crowdsourced signal only (no registered tower) |
| Katipunan-Bayan (Pob.) | 1,710 | 24 | Crowdsourced signal only (no registered tower) |
| Kaybuto (Pob.) | 3,521 | 11 | Crowdsourced signal only (no registered tower) |
| Laiban | 3,880 | 2 | Crowdsourced signal only (no registered tower) |
| Madilay-dilay | 671 | 2 | Crowdsourced signal only (no registered tower) |
| Mag-Ampon (Pob.) | 77 | 2 | Crowdsourced signal only (no registered tower) |
| Mamuyao | 989 | 0 | Dead zone: no towers from any source |
| Pinagkamaligan (Pob.) | 684 | 0 | Dead zone: no towers from any source |
| Plaza Aldea (Pob.) | 38,892 | 110 | Crowdsourced signal only (no registered tower) |
| Sampaloc | 25,488 | 142 | Crowdsourced signal only (no registered tower) |
| San Andres | 1,794 | 0 | Dead zone: no towers from any source |
| San Isidro (Pob.) | 1,523 | 1 | Crowdsourced signal only (no registered tower) |
| Santa Inez | 7,436 | 2 | Crowdsourced signal only (no registered tower) |
| Santo Niño | 2,301 | 1 | Crowdsourced signal only (no registered tower) |
| Tabing Ilog (Pob.) | 365 | 4 | Crowdsourced signal only (no registered tower) |
| Tandang Kutyo (Pob.) | 8,588 | 64 | Crowdsourced signal only (no registered tower) |
| Tinucan | 168 | 0 | Dead zone: no towers from any source |
| Wawa (Pob.) | 6,575 | 0 | Dead zone: no towers from any source |