Urban Development in Tanzania 12 indicators covering urban development for Tanzania. IndicatorLatest Year10-yr change Rank Population in the largest city 32.9% 2025 up 4.4% 65th Population density 75.21 people per sq. km of land area 2023 up 36.4% 130th PM2.5 air pollution, mean annual exposure 20.17 micrograms per cubic meter 2023 down 12.6% 83rd Population in urban agglomerations of more than 1 million 10.01 million 2025 up 68.1% 34th Population in urban agglomerations of more than 1 million, per capita 0.1419 units per person 2025 up 24.0% 95th Population in urban agglomerations of more than 1 million, annual 4.92 % change on previous year 2025 down 15.1% 2nd Population in urban agglomerations of more than 1 million, per unit 0.0001 units per US$ of GDP 2025 down 11.6% 19th Population in urban agglomerations of more than 1 million, per square 10.26 units per square kilometre 2023 up 70.8% 81st Population in largest city 8.56 million 2025 up 67.4% 27th Crude steelmaking capacity 0 Tonnes 2025 — 97th Africa's Development Dynamics (AfDD) Table 23 - Ecological 96.27 Hectares 2020 up 64.3% 63rd PM2.5 air pollution, population exposed to levels exceeding WHO 100.0% 2017 unchanged 1st