Population in South-East Asia (WHO regions) 20 indicators covering population for South-East Asia (WHO regions). IndicatorLatest Year10-yr change Rank Total population by age 20,688 2100 down 6.5% 39th Total population by age 8,701 2023 up 53.9% 25th Proportion of population using of on-site sanitation facilities with 0.0573 2024 up 1.9% 49th Proportion of population using basic sanitation services 23.76 2024 up 31.2% 19th Proportion of population using safely managed sanitation services 58.87 2024 up 52.4% 19th Proportion of population using sanitation facilities connected to 5.94 2024 up 77.9% 40th Proportion of population using on-site sanitation facilities with 52.88 2024 up 50.1% 1st Proportion of population using improved drinking water sources 97.81 2024 up 5.2% 15th Proportion of population using limited drinking water services 2.03 2024 down 36.8% 44th Proportion of population using sanitation facilities connected to 14.64 2024 up 39.0% 38th Proportion of population using unimproved sanitation facilites 1.39 2024 down 72.6% 55th Proportion of population using limited sanitation services 10.43 2024 down 4.1% 32nd Proportion of population using at least basic sanitation services 82.64 2024 up 45.7% 25th Proportion of population using improved sanitation facilities 93.07 2024 up 37.7% 23rd Proportion of population using improved latrines and other improved 39.69 2024 up 43.0% 4th Proportion of population using sanitation facilities connected to 38.74 2024 up 32.2% 1st Proportion of population practising open defecation 5.55 2024 down 79.7% 34th New internal displacements 3.31 million 2025 down 61.1% 79th Internally displaced persons 10.58 million 2025 up 483.9% 54th International migrants, by country of destination 11.66 million 2024 up 13.0% 89th