| 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | |
|---|---|---|---|---|---|---|
| Baku city | 116 030 | 145 998 | 295 862 | 598 132 | 647 752 | 702 484 |
| Ganja-Gazakh | 48 663 | 63 348 | 70 673 | 90 925 | 95 316 | 103 431 |
| Aran | 81 533 | 80 705 | 81 163 | 95 404 | 92 013 | 98 962 |
| Lankaran | 26 899 | 33 268 | 37 522 | 46 064 | 43 852 | 47 258 |
| Absheron | 18 089 | 21 206 | 23 966 | 33 405 | 35 870 | 42 911 |
| Nakhchivan | 15 545 | 18 252 | 18 495 | 24 990 | 27 825 | 33 589 |
| Shaki-Zagatala | 22 847 | 25 557 | 27 928 | 29 673 | 30 434 | 33 473 |
| Guba-Khachmaz | 16 411 | 18 622 | 18 204 | 23 654 | 23 076 | 25 318 |
| Dakhlik Shirvan | 13 210 | 13 682 | 13 926 | 12 332 | 12 138 | 13 991 |
| Yukhari Karabakh | 3 132 | 2 730 | 2 704 | 3 230 | 3 409 | 3 712 |