| Locality | Post Code |
|---|---|
| Bulunsky, Bulunsky district (Булунский) | 678400 |
| Bykovsky, Bulunsky district (Быковский) | 678412 |
| Chekurovka, Bulunsky district (Чекуровка) | 678420 |
| Kyusyur, Bulunsky district (Кюсюр) | 678400, 678420 |
| Naiba, Bulunsky district (Найба) | 678410 |
| Namy, Bulunsky district (Намы) | 678411 |
| Siktyakh, Bulunsky district (Сиктях) | 678421 |
| Sklad, Bulunsky district (Склад) | 678414 |
| Taimylyr, Bulunsky district (Таймылыр) | 678414 |
| Tiksi, Bulunsky district (Тикси) | 678400, 678403 |
| Tiksi 3-Y, Bulunsky district (Тикси 3-Й) | 678400, 678403 |
| Ust-Olenek, Bulunsky district (Усть-Оленек) | 678414 |