Country · 30 regions
Where Tanzania's land ends up, by people and by money
Every block on the map is 0.1% of Tanzania. By land, Dar-Es-Salaam holds 0.40%. By people, it holds 13%. Lindi goes the other way, from 7.1% of the land to 1.5% of the people.
| Region | Land | People | GDP |
|---|---|---|---|
| Dar-Es-Salaam | 0.40 | 13 | 20 |
| Mwanza | 2.9 | 6.3 | 6.2 |
| Mbeya | 6.3 | 6.2 | 8.3 |
| Tabora | 8.3 | 5.3 | 3.5 |
| Geita | 2.5 | 4.8 | 3.5 |
| Kigoma | 5.2 | 4.8 | 2.3 |
| Morogoro | 7.5 | 4.7 | 4.5 |
| Kagera | 3.4 | 4.4 | 2.0 |
| Tanga | 3.0 | 4.4 | 4.8 |
| Dodoma | 4.3 | 4.2 | 2.7 |
| Simiyu | 2.3 | 3.7 | 2.6 |
| Arusha | 4.4 | 3.6 | 5.9 |
| Shinyanga | 2.1 | 3.6 | 2.5 |
| Mara | 3.3 | 3.5 | 2.9 |
| Manyara | 4.8 | 3.4 | 2.8 |
| Kilimanjaro | 1.2 | 3.2 | 3.8 |
| Singida | 5.5 | 2.9 | 1.7 |
| Ruvuma | 6.5 | 2.8 | 3.4 |
| Mtwara | 1.9 | 2.4 | 2.4 |
| Pwani | 3.3 | 2.3 | 1.8 |
| Rukwa | 2.9 | 2.3 | 2.2 |
| Iringa | 3.9 | 1.7 | 3.1 |
| Lindi | 7.1 | 1.5 | 1.6 |
| Zanzibar West | 0.00 | 1.5 | 1.7 |
| Katavi | 5.0 | 1.3 | 1.1 |
| Njombe | 2.3 | 1.3 | 1.5 |
| Kaskazini-Pemba | 0.10 | 0.40 | 0.30 |
| Kaskazini-Unguja | 0.20 | 0.40 | 0.40 |
| Kusini-Pemba | 0.00 | 0.30 | 0.20 |
| Zanzibar South and Central | 0.00 | 0.20 | 0.20 |
How the map is made
Regions are drawn on an equal-area grid of about 1,000 blocks. For land, each region keeps the blocks its territory covers. For people and GDP, the country is reshaped so every region gets a whole number of blocks in proportion to its share (Hamilton's largest-remainder method), keeping neighbours next to each other. Then every block is matched to one block on the next map, so you watch the same thousand blocks rearrange.
Grids: popgrid by Josep Ferrer (MIT). Boundaries: Natural Earth. Population: national censuses where curated, GHS-POP 2025 (JRC, European Commission) elsewhere. GDP: Kummu et al. 2025 gridded GDP PPP (CC BY 4.0). Built by Crafter Station.