San Simon comprises 14 barangays with an estimated population of 79,817. 4 of its barangays (29%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Concepcion | 9,597 | 0 | Dead zone: no towers from any source |
| De La Paz | 15,201 | 59 | Crowdsourced signal only (no registered tower) |
| San Agustin | 1,052 | 23 | Crowdsourced signal only (no registered tower) |
| San Isidro | 9,526 | 13 | Crowdsourced signal only (no registered tower) |
| San Jose | 1,389 | 5 | Crowdsourced signal only (no registered tower) |
| San Juan (Pob.) | 1,465 | 0 | Dead zone: no towers from any source |
| San Miguel | 12,474 | 9 | Crowdsourced signal only (no registered tower) |
| San Nicolas | 6,062 | 4 | Crowdsourced signal only (no registered tower) |
| San Pablo Libutad | 502 | 4 | Crowdsourced signal only (no registered tower) |
| San Pablo Proper | 7,583 | 7 | Crowdsourced signal only (no registered tower) |
| San Pedro | 5,827 | 0 | Dead zone: no towers from any source |
| Santa Cruz | 3,199 | 0 | Dead zone: no towers from any source |
| Santa Monica | 3,477 | 39 | Crowdsourced signal only (no registered tower) |
| Santo Niño | 2,463 | 8 | Crowdsourced signal only (no registered tower) |