| Locality | Post Code |
|---|---|
| Agrihan, Northern Islands | 96950 |
| Alamagan, Northern Islands | 96950 |
| Anatahan, Northern Islands | 96950 |
| Asuncion, Northern Islands | 96950 |
| Farallon de Medinilla, Northern Islands | 96950 |
| Farallon de Pajaros, Northern Islands | 96950 |
| Guguan, Northern Islands | 96950 |
| Maug Islands, Northern Islands | 96950 |
| Pagan, Northern Islands | 96950 |
| Sarigan, Northern Islands | 96950 |
| Zealandia Bank, Northern Islands | 96950 |