| Absheron (Abşeron) | 557,800 inhabitants | 3,730 km² |
| Aran | 1,961,400 inhabitants | 21,150 km² |
| Bakou | 2,225,800 inhabitants | 2,140 km² |
| Chaki-Zaqatala (Şəki-Zaqatala) | 606,100 inhabitants | 8,840 km² |
| Chirvan (Şirvan) | 308,200 inhabitants | 6,130 km² |
| Gandja-Qazax | 1,253,400 inhabitants | 12,300 km² |
| Kelbadjar-Latchin (Kəlbəcər-Laçın) (Occupé militairement par l'Arménie) | 247,900 inhabitants | 6,420 km² |
| Lankaran (Lənkəran) | 905,900 inhabitants | 6,070 km² |
| Nakhitchevan (République autonome) | 444,400 inhabitants | 5,503 km² |
| Quba-Xaçmaz | 532,600 inhabitants | 6,960 km² |
| Yukhari-Haut-Karabakh (Indépendant sous le nom Artsakh) | 662,100 inhabitants | 7,330 km² |
