Urban Development in Liberia 12 indicators covering urban development for Liberia. IndicatorLatest Year10-yr change Rank Population in the largest city 55.8% 2025 up 4.0% 14th Population density 57.03 people per sq. km of land area 2023 up 22.9% 147th PM2.5 air pollution, mean annual exposure 17.92 micrograms per cubic meter 2023 up 3.5% 99th Population in urban agglomerations of more than 1 million 1.79 million 2025 up 41.3% 91st Population in urban agglomerations of more than 1 million, per capita 0.3131 units per person 2025 up 14.9% 34th Population in urban agglomerations of more than 1 million, annual 3.42 % change on previous year 2025 down 9.0% 21st Population in urban agglomerations of more than 1 million, per unit 0.0003 units per US$ of GDP 2025 down 13.1% 1st Population in urban agglomerations of more than 1 million, per square 17.42 units per square kilometre 2023 up 42.3% 62nd Population in largest city 1.79 million 2025 up 41.3% 90th Africa's Development Dynamics (AfDD) Table 23 - Ecological 23.23 Hectares 2020 up 35.6% 118th PM2.5 air pollution, population exposed to levels exceeding WHO 100.0% 2017 unchanged 1st Dollar value of all resources made available to strengthen 10.15 million 2023 up 484.3% 24th