World age structure in 2015

Population structure and ageing in 2015:

The following maps are representing the „population – between the ages “0 to 14”, “15 to 64” and “65 and above” – as a percentage of the total population. Population is based on the de facto definition of population, which counts all residents regardless of legal status or citizenship.” – World BankPopulation 0-14 (2015) (Custom)

Population 14-65 (2015) (Custom)

Population over 65 (2015) (Custom)

Statistical concept and methodology:

Age structure in World Bank’s population estimates is based on the age structure in United Nations Population Division’s World Population Prospects. For more information, see the original source. Total population is based on the de facto population including all residents regardless of legal status or citizenship. The values shown are midyear estimates.” – World Bank

Development relevance:

Patterns of development in a country are partly determined by the age composition of the population. Because different age groups have varying impacts on infrastructure needs, resource use and planning, and impacts on the environment, the age structure of a population is useful for analyzing future policy and planning goals involving infrastructure and development patterns. This indicator is used for calculating age dependency ratio (percent of working-age population). The age dependency ratio is the ratio of the sum of the population aged 0-14 and the population aged 65 and above to the population aged 15-64. In many developing countries, the once rapidly growing population group of under-15 population is shrinking. As a result, high fertility rates, together with declining mortality rates, are now reflected in the larger share of the 65 and older population.” –– World Bank

Limitations and exceptions:

Because the five-year age group is the cohort unit and five-year period data are used in the United Nations Population Division’s World Population Prospects, interpolations to obtain annual data or single age structure may not reflect actual events or age composition.” – World Bank

Data source:

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