| Ortschaft | Postleitzahl |
|---|---|
| Kampong Anduki, Seria | KB2333 |
| Kampong Jabang, Seria | KB3933 |
| Kampong Jalan Bedas, Seria | KB2133 |
| Kampong Lorong Tiga Selatan, Seria | KB1333 |
| Kampong Masjid, Seria | KB2733 |
| Kampong Pekan Seria, Seria | KB1133 |
| Kampong Perakong, Seria | KB1733 |
| Kampong Perpindahan Baru, Seria | KB2533 |
| Kampong Sungai Bera, Seria | KB1933 |
| Kawasan Jalan Bolkiah, Seria | KB4333 |
| Kawasan Perumahan B.S.P Lorong 14-20, Seria | KB3333 |
| Kawasan Perumahan B.S.P Lorong 3-7, Seria | KB2933 |
| Kawasan Perumahan B.S.P Lorong 8-13, Seria | KB3133 |
| Kawasan Shell, Seria | KB3533 |
| Military Area, Seria | KB3733 |
| Panaga, Seria | KB4533 |
| Perumahan Negara Lorong Tiga Seria, Seria | KB1533 |
| Sekolah Mission, Seria | KB4133 |
| Postleitzahlen in Belait | |
|---|---|
| Sukang | Seria |
| Melilas | Liang |
| Labi | Kuala Belait |
| Kuala Balai | Bukit Sawat |