| Locality | Post Code |
|---|---|
| Santa Gertrudis, Otumba | 55937 |
| Santiago Tolman, Otumba | 55920 |
| Tecalco, Otumba | 55927 |
| Tepa Grande (Rancho Guadalupe Tepa), Otumba | 55924 |
| Tlahuico, Otumba | 55924 |
| Tlalmimilolpa, Otumba | 55924 |
| Xamimilolpan, Otumba | 55913 |
| Xochihucán, Otumba | 55934 |
| ZR, Otumba | 55927 |