| Locality | Post Code |
|---|---|
| Canteal, Chalchihuitán | 29851 |
| Chalchihuitán, Chalchihuitán | 29850 |
| Chiquinshulum, Chalchihuitán | 29852 |
| Jolik-alum, Chalchihuitán | 29853 |
| Jolitontic, Chalchihuitán | 29853 |
| Joltealal, Chalchihuitán | 29855 |
| Saclum, Chalchihuitán | 29857 |
| Sisim, Chalchihuitán | 29853 |
| Tzacucum, Chalchihuitán | 29854 |
| Tzizim, Chalchihuitán | 29856 |