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Population ageing is an increasing median age in a population because of declining fertility rates and rising life expectancy. Most countries have rising life expectancy and an ageing population, trends that emerged first in developed countries but are now seen in virtually all developing countries. In most developed countries, the phenomenon ...
English: A country's median age in years is the age that divides the country's population in two parts of equal size, that is, there are as many persons with ages above the median as there are with ages below the median. It is indicator of relative aging of the population, birth rates, early death rates and weighted age groups.
It is the only index associated with the age distribution of a population. [ 1 ] Currently, the median age ranges from a low of about 18 or less in most Least Developed countries to 40 or more in most European countries, Canada , Cuba , Hong Kong , Japan , South Korea , Taiwan , and Thailand .
The following list of countries by age structure sorts the countries of the world according to the age distribution of their population. The population is divided into three groups: Ages 0 to 14 years: children. Ages 15 to 64 years: working population or adults. Over the age of 65: elderly, senior citizens.
Geography of aging or gerontological geography is an emerging field of knowledge of human geography that analyzes the socio-spatial implications of aging of the population from the understanding of the relationships between the physical-social environment and the elderly, at different scales, micro (city, region, country), etc.
The population growth rate estimates (according to the United Nations Population Prospects 2019) between 2015 and 2020 [1] This article includes a table of countries and subnational areas by annual population growth rate.
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Below is a list of countries and regions of the world with their projected population, as estimated by the UN Department of Economic and Social Affairs, as of July 11, 2022. The Medium variant of the forecast for July 1, 2024, July 1, 2030, July 1, 2050 and July 1, 2100 is given. [12] [13]