| 2005 | 2010 | 2011 | 2012 | 2013 | |
|---|---|---|---|---|---|
| Mainland | 21.931.792 | ||||
| Shinyanga Region | 1.540.114 | 1.888.128 | 1.967.565 | 2.049.984 | 2.135.463 |
| Mwanza Region | 1.521.819 | 1.767.868 | 1.820.061 | 1.871.670 | 1.923.853 |
| Dar Es Salaam Region | 1.369.474 | 1.562.543 | 1.599.850 | 1.636.421 | 1.672.184 |
| Mbeya Region | 1.092.620 | 1.296.603 | 1.339.509 | 1.381.782 | 1.424.192 |
| Kagera Region | 1.047.123 | 1.265.312 | 1.314.739 | 1.366.151 | 1.419.481 |
| Tabora Region | 948.896 | 1.163.409 | 1.211.096 | 1.260.369 | 1.311.194 |
| Morogoro Region | 938.879 | 1.056.426 | 1.080.510 | 1.104.638 | 1.128.722 |
| Dodoma Region | 899.092 | 1.039.950 | 1.067.445 | 1.094.372 | 1.120.652 |
| Tanga Region | 852.419 | 959.443 | 981.180 | 1.002.846 | 1.024.521 |
| Kigoma Region | 705.756 | 878.182 | 917.172 | 957.764 | 999.941 |
| Mara Region | 727.968 | 885.443 | 920.844 | 957.551 | 995.612 |
| Arusha Region | 704.762 | 823.623 | 847.381 | 871.061 | 894.667 |
| Iringa Region | 756.186 | 839.397 | 854.785 | 869.561 | 883.589 |
| Kilimanjaro Region | 712.217 | 797.764 | 815.229 | 832.621 | 849.796 |
| Rukwa Region | 614.331 | 735.332 | 762.601 | 790.865 | 820.180 |
| Manyara Region | 592.070 | 708.333 | 735.250 | 763.344 | 792.671 |
| Singida Region | 580.643 | 673.710 | 692.740 | 711.819 | 730.848 |
| Ruvuma Region | 586.852 | 672.692 | 691.420 | 710.565 | 730.126 |
| Mtwara Region | 568.806 | 636.993 | 650.811 | 664.612 | 678.359 |
| Zanzibar | 653.267 | ||||
| Pwani Region | 467.484 | 525.794 | 538.037 | 550.416 | 562.827 |
| Lindi Region | 402.398 | 447.669 | 457.025 | 466.461 | 475.971 |
| Mjini Magharibi Region | 207.404 | 236.571 | 242.438 | 248.301 | 254.156 |
| Kaskazini Pemba Region | 102.033 | 125.601 | 131.046 | 136.720 | 142.618 |
| Kusini Pemba Region | 97.251 | 121.782 | 127.398 | 133.255 | 139.342 |
| Kaskazini Unguja Region | 73.647 | 87.009 | 90.046 | 93.206 | 96.485 |
| Kusini Unguja Region | 51.017 | 56.846 | 58.051 | 59.279 | 60.507 |