Urban Development in China 14 indicators covering urban development for China. IndicatorLatest Year10-yr change Rank Population in the largest city 3.3% 2025 up 10.0% 153rd Population density 150.26 people per sq. km of land area 2023 up 3.5% 74th PM2.5 air pollution, mean annual exposure 31.99 micrograms per cubic meter 2023 down 38.2% 43rd Population in urban agglomerations of more than 1 million 460.16 million 2025 up 28.4% 1st Population in urban agglomerations of more than 1 million, per capita 0.3272 units per person 2025 up 26.0% 31st Population in urban agglomerations of more than 1 million, annual 2.03 % change on previous year 2025 down 27.3% 43rd Population in urban agglomerations of more than 1 million, per unit 0 units per US$ of GDP 2025 down 25.7% 72nd Population in urban agglomerations of more than 1 million, per square 47 units per square kilometre 2023 up 30.2% 23rd Population in largest city 30.48 million 2025 up 29.8% 3rd Crude steelmaking capacity 1,136 Tonnes 2025 down 6.1% 1st Africa's Development Dynamics (AfDD) Table 23 - Ecological 11,049 Hectares 2020 up 51.9% 2nd PM2.5 air pollution, population exposed to levels exceeding WHO 100.0% 2017 down 0.0% 125th Dollar value of all resources made available to strengthen 1.13 million 2023 down 26.4% 86th Transport equipment indicators — Available seat capacity for schedule 78.62 Per 1 000 inhabitants 2016 up 105.7% 43rd