| Place | Post Code |
|---|---|
| Abualan, San Juan | 2823 |
| Ba-Ug, San Juan | 2823 |
| Badas, San Juan | 2823 |
| Cabcaborao, San Juan | 2823 |
| Colabaoan, San Juan | 2823 |
| Culiong, San Juan | 2823 |
| Daoidao, San Juan | 2823 |
| Guimba, San Juan | 2823 |
| Lam-Ag, San Juan | 2823 |
| Lumobang, San Juan | 2823 |
| Nangobongan, San Juan | 2823 |
| Pattaoig, San Juan | 2823 |
| Poblacion North, San Juan | 2823 |
| Poblacion South, San Juan | 2823 |
| Quidaoen, San Juan | 2823 |
| Sabangan, San Juan | 2823 |
| Silet, San Juan | 2823 |
| Supi-Il, San Juan | 2823 |
| Tagaytay, San Juan | 2823 |