| Place | Post Code |
|---|---|
| Alto Calderón, San Pedro | 11905 |
| Cedral, San Pedro | 11905 |
| Cruz Roja, San Pedro | 11905 |
| Fátima, San Pedro | 11905 |
| Fortuna, San Pedro | 11905 |
| Guaria, San Pedro | 11905 |
| Junta, San Pedro | 11905 |
| Laguna, San Pedro | 11905 |
| Rinconada Vega, San Pedro | 11905 |
| San Jerónimo, San Pedro | 11905 |
| San Juan, San Pedro | 11905 |
| San Juancito, San Pedro | 11905 |
| San Pedro, San Pedro | 11905 |
| San Rafael, San Pedro | 11905 |
| Santa Ana, San Pedro | 11905 |
| Santo Domingo, San Pedro | 11905 |
| Tambor, San Pedro | 11905 |
| Unión, San Pedro | 11905 |
| Zapotal, San Pedro | 11905 |