In 2018, for the first time in history, persons aged 65 or above outnumbered children under five years of age globally. * Including the Human Mortality Database and Human Life Table Database (UC Berkeley, MPIDR and INED), the Human Fertility Database and Human Fertility Collection (MPIDR and VID), the Latin American Mortality DatabaseLAMBdA (University of Wisconsin-Madison), the International Data Base (U.S. Census Bureau), the Global Burden of Disease project (IHME, University of Washington) and the Developing Countries Mortality DatabaseDCMD (Zhejiang University). Population, surface area and density; PDF | CSV Updated: 23-Jul-2019; International migrants and refugees 1,690 population and housing censuses for 235 countries or areas, including 236 censuses conducted since 2010; vital registration of births and deaths from 163 countries or areas; 2,700 surveys, including demographic and health surveys, conducted in 235 countries or areas, among which 540 were administered in 2010 or later; population registers and other administrative sources on international migration statistics. The latest assessment uses the results of 1,690 national population censuses conducted between 1950 and 2018, as well as information from vital registration systems and from 2,700 nationally representative sample surveys. The report includes updated population estimates from 1950 to the present for 235 countries or areas, based on detailed analyses of all available information about the relevant historical demographic trends. In doing so, the Population Division used the cohort-component method (United Nations, 1956) to ensure internal consistency by age and sex and over time, and between the three demographic components of change (fertility, mortality and migration) and the enumerated population. various other series of international estimates produced by international and regional organizations, and academic research institutions*. The method takes into account the past experience of each country, while also reflecting uncertainty about future changes based on the past experience of other countries under similar conditions. Methodology of the United Nations Population Estimates and Projections With each successive revision of the World Population Prospects, the Population Division of the United Nations estimates historical demographic trends for the period from 1950 to the present and projects future population A description of the empirical data that inform the latest set of estimates is available under Data sources. The resulting changes in the size, composition and distribution of the worlds population have important consequences for achieving the Sustainable Development Goals (SDGs), the globally agreed targets for improving economic prosperity and social well-being while protecting the environment. The2019 Revision ofWorld Population Prospects is the twenty-sixth round of official United Nations population estimates and projections that have been prepared by the Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat. Disclaimer: This web site contains data tables, figures, maps, analyses and technical notes from the current revision of the World Population Prospects. This is a list of countries and other inhabited territories of the world by total population, ), Mr. Liu Zhenmin, United Nations Under-Secretary-General for Economic and Social Affairs, said the report offers a roadmap indicating where to target action and interventions. These documents do not imply the expression of any opinion whatsoever on the part of the Secretariat of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. To benefit from this demographic dividend, governments should invest in education and health, especially for young people, and create conditions conducive to sustained economic growth. The 2019 revision also presents population projections from the present until 2100, depicting a range of possible or plausible outcomes at the global, regional and country levels. The 2019 Revision of World Population Prospects is the twenty-sixth round of official United Nations population estimates and projections that have been prepared by the Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat. In most of sub-Saharan Africa, and in parts of Asia and Latin America and the Caribbean, recent reductions in fertility have caused the population at working ages (25-64 years) to grow faster than at other ages, creating an opportunity for accelerated economic growth thanks to a favourable population age distribution. While considerable progress has been made in closing the longevity differential between countries, large gaps remain. The impact of low fertility on population size is reinforced in some locations by high rates of emigration. (A fertility level of 2.1 births per woman is needed to ensure replacement of generations and avoid population decline over the long run in the absence of immigration. Population data from all sources are evaluated for completeness, accuracy and consistency, and adjusted as necessary. For further details, see also the report World Population Prospects 2019: Methodology of the United Nations Population Estimates and Projections. In projecting future levels of fertility and mortality, probabilistic methods were used to reflect the uncertainty of the projections based on the historical variability of changes in each variable. The worlds population is expected to increase by 2 billion persons in the next 30 years, from 7.7 billion currently to 9.7 billion in 2050, according to a new United Nations report launched today. Regions where the share of the population aged 65 years or over is projected to double between 2019 and 2050 include Northern Africa and Western Asia, Central and Southern Asia, Eastern and South-Eastern Asia, and Latin America and the Caribbean. Popular statistical tables, country (area) and regional profiles . The worlds population is growing older, with the age group of 65 and over growing the fastest. For advanced users who need to use these data in a database form or statistical software, we recommend to use the CSV format for bulk download. Department of Economic and Social Affairs Population Dynamics. Since 2010, 27 countries or areas have experienced a reduction of one per cent or more in the size of their populations. In Japan this ratio is 1.8, the lowest in the world. These low values underscore the potential impact of population ageing on the labour market and economic performance, as well as the fiscal pressures that many countries will face in the coming decades as they seek to build and maintain public systems of health care, pensions and social protection for older persons. Because population data are not necessarily available for that date, the 2020 estimate is derived from the most recent population data available for each country, obtained usually from a population census or a population register, projected to 2020 using all available data on fertility, mortality and international migration trends between the reference date of the population data available and 1 July 2020. By 2050, one in six people in the world will be over age 65 (16%), up from one in 11 in 2019 (9%). 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