| Localité | Code postal |
|---|---|
| Aguayutla, Singuilucan | 43794 |
| Alfajayucan, Singuilucan | 43793 |
| Altamira, Singuilucan | 43782 |
| Amolucan, Singuilucan | 43785 |
| Ampliación Alfajayucan, Singuilucan | 43793 |
| Ampliación del Sustito, Singuilucan | 43790 |
| Ampliación el Varal, Singuilucan | 43794 |
| Buenavista, Singuilucan | 43788 |
| Caraballo, Singuilucan | 43788 |
| Cerro Colorado, Singuilucan | 43787 |
| Chabacano, Singuilucan | 43780 |
| Chapultepec, Singuilucan | 43787 |
| Crucero de Jalapilla, Singuilucan | 43795 |
| Cuatro Palos, Singuilucan | 43797 |
| Cuatro Vientos, Singuilucan | 43787 |
| Cuyamaloya, Singuilucan | 43785 |
| Del Bosque, Singuilucan | 43782 |
| El Campamento, Singuilucan | 43795 |
| El Cebadal, Singuilucan | 43782 |
| El Chichimeco, Singuilucan | 43783 |
| El Jazmín, Singuilucan | 43788 |
| El Mirador, Singuilucan | 43794 |
| El Paraíso, Singuilucan | 43788 |
| El Sueño (los Morales), Singuilucan | 43783 |
| El Sustito, Singuilucan | 43794 |
| El Susto, Singuilucan | 43790 |