| 2005 | 2010 | 2011 | 2012 | 2013 | |
|---|---|---|---|---|---|
| Mainland | 1.805.137 | ||||
| Shinyanga Region | 168.165 | 197.965 | 207.426 | 214.402 | 221.505 |
| Mwanza Region | 133.157 | 145.819 | 148.378 | 148.068 | 150.445 |
| Kagera Region | 113.555 | 134.510 | 139.060 | 143.724 | 148.232 |
| Mbeya Region | 114.044 | 127.688 | 129.981 | 130.033 | 132.032 |
| Tabora Region | 100.851 | 118.979 | 122.838 | 126.810 | 130.868 |
| Kigoma Region | 80.735 | 96.573 | 99.887 | 103.423 | 106.884 |
| Mara Region | 79.759 | 94.175 | 97.300 | 100.331 | 103.502 |
| Dar Es Salaam Region | 104.999 | 104.184 | 103.012 | 101.362 | 99.820 |
| Rukwa Region | 65.601 | 77.731 | 80.265 | 82.732 | 85.332 |
| Dodoma Region | 87.233 | 87.782 | 86.706 | 85.512 | 84.129 |
| Morogoro Region | 72.484 | 76.252 | 76.816 | 77.324 | 77.762 |
| Manyara Region | 52.171 | 62.236 | 64.602 | 67.088 | 69.672 |
| Tanga Region | 64.221 | 66.614 | 66.985 | 67.282 | 67.761 |
| Ruvuma Region | 48.725 | 54.593 | 55.790 | 56.849 | 57.865 |
| Arusha Region | 56.519 | 57.766 | 57.816 | 57.834 | 57.814 |
| Iringa Region | 58.977 | 57.050 | 56.685 | 56.333 | 55.859 |
| Mtwara Region | 48.748 | 50.615 | 50.801 | 51.076 | 51.328 |
| Singida Region | 48.945 | 50.694 | 50.788 | 50.913 | 50.820 |
| Zanzibar | 48.763 | ||||
| Kilimanjaro Region | 42.651 | 43.811 | 44.179 | 44.397 | 44.418 |
| Pwani Region | 37.809 | 40.675 | 41.103 | 41.586 | 41.953 |
| Lindi Region | 28.860 | 29.719 | 29.936 | 30.090 | 30.227 |
| Mjini Magharibi Region | 15.546 | 15.870 | 15.883 | 15.884 | 15.872 |
| Kaskazini Pemba Region | 10.693 | 13.386 | 13.894 | 14.403 | 14.906 |
| Kusini Pemba Region | 10.434 | 12.939 | 13.439 | 13.961 | 14.460 |
| Kaskazini Unguja Region | 6.624 | 7.855 | 8.128 | 8.405 | 8.664 |
| Kusini Unguja Region | 3.343 | 3.540 | 3.566 | 3.585 | 3.595 |