| Locality | Post Code |
|---|---|
| San Vicente, Santiago Ixcuintla | 63563 |
| Santa Cruz, Santiago Ixcuintla | 63560 |
| Santa Rosa, Santiago Ixcuintla | 63578 |
| Santiago Ixcuintla, Santiago Ixcuintla | 63300, 63310, 63311, 63312, 63313, … |
| Sauta, Santiago Ixcuintla | 63570 |
| Sentispac, Santiago Ixcuintla | 63565 |
| Sinaloa, Santiago Ixcuintla | 63561 |
| Toro Mocho, Santiago Ixcuintla | 63573 |
| Vado del Cora, Santiago Ixcuintla | 63558 |
| Vado del Cora (Estación Pani), Santiago Ixcuintla | 63558 |
| Valle Lerma, Santiago Ixcuintla | 63559 |
| Valle Morelos, Santiago Ixcuintla | 63552 |
| Valle Zaragoza, Santiago Ixcuintla | 63553 |
| Villa Hidalgo (El Nuevo), Santiago Ixcuintla | 63550 |
| Villa Juárez, Santiago Ixcuintla | 63579 |
| Yago, Santiago Ixcuintla | 63380 |
| Yago Estación, Santiago Ixcuintla | 63380 |