| 1970 | 1990 | 2000 | 2005 | 2010 | |
|---|---|---|---|---|---|
| Selenge | 150 583 | 192 011 | 77 008 | 30 878 | 177 659 |
| Tov | 86 715 | 160 710 | 15 440 | 7 245 | 82 651 |
| Bulgan | 18 485 | 89 773 | 26 413 | 13 392 | 36 422 |
| Khovsgol | 11 051 | 27 700 | 3 509 | 7 543 | 18 098 |
| Darkhan-Uul | 28 037 | 7 486 | 1 527 | 9 738 | |
| Khentii | 13 167 | 48 646 | 2 058 | 8 132 | 7 326 |
| Orkhon | 2 638 | 1 449 | 852 | 6 367 | |
| Uvs | 13 102 | 20 200 | 2 480 | 1 596 | 5 716 |
| Dornod | 5 499 | 35 407 | 2 028 | 2 290 | 4 994 |
| Arkhangai | 5 173 | 46 300 | 625 | 720 | 2 843 |
| Ovorkhangai | 11 646 | 26 959 | 1 509 | 155 | 1 089 |
| Govi-Altai | 625 | 882 | 602 | 520 | 839 |
| Zavkhan | 2 561 | 17 340 | 5 | 616 | |
| Khovd | 2 906 | 1 607 | 1 441 | 613 | 609 |
| Bayan-Ulgii | 411 | 539 | 13 | 3 | 44 |
| Sukhbaatar | 4 118 | 19 517 | 40 | ||
| Bayankhongor | 109 | 70 | 1 | 3 | 12 |
| Dundgovi | 36 | ||||
| Ulaanbaatar | 349 |