| Districts |
|---|
| Balikpapan Barat, Balikpapan |
| Balikpapan Kota, Balikpapan |
| Balikpapan Selatan, Balikpapan |
| Balikpapan Tengah, Balikpapan |
| Balikpapan Timur, Balikpapan |
| Balikpapan Utara, Balikpapan |
| All postal codes in Kalimantan Timur |
|---|
| Balikpapan |
| Berau |
| Bontang |
| Kutai Barat |
| Kutai Kartanegara |
| Kutai Timur |
| Mahakam Hulu |
| Paser |
| Penajam Paser Utara |
| Samarinda |