| Place | Post Code |
|---|---|
| Americana, San Juan | 20203 |
| Bajo Tajos, San Juan | 20203 |
| Belén, San Juan | 20203 |
| Cipreses, San Juan | 20203 |
| Juntas, San Juan | 20203 |
| Llamarón, San Juan | 20203 |
| Pueblo Nuevo, San Juan | 20203 |
| San Juan, San Juan | 20203 |
| Tanque, San Juan | 20203 |
| Tejar, San Juan | 20203 |
| Vicente Badilla, San Juan | 20203 |