| Place | Post Code |
|---|---|
| Barangay No. 1, San Julian | 6814 |
| Barangay No. 2, San Julian | 6814 |
| Barangay No. 3, San Julian | 6814 |
| Barangay No. 4, San Julian | 6814 |
| Barangay No. 5, San Julian | 6814 |
| Barangay No. 6, San Julian | 6814 |
| Bunacan, San Julian | 6814 |
| Campidhan, San Julian | 6814 |
| Casoroy, San Julian | 6814 |
| Libas, San Julian | 6814 |
| Lunang, San Julian | 6814 |
| Nena, San Julian | 6814 |
| Pagbabangnan, San Julian | 6814 |
| Putong, San Julian | 6814 |
| San Isidro, San Julian | 6814 |
| San Miguel, San Julian | 6814 |