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HOME: POPULATION ISSUES: ADVANCING SUSTAINABLE DEVELOPMENT: Population & Demographic Dynamics
Advancing Sustainable Development
Population & Demographic Dynamics
Population, Poverty & Environment
Data Systems, including Censuses & Indicators
Urbanization & Migration
Population Ageing & Poverty
Population Resource Flows
Human Rights
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Fast Facts
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Fast Facts

Population & Demographic Dynamics

  • Over the next 25 years the world will add as many people as it did the past 25 years.

  • While people are ageing, the world has more young people than ever before. Nearly 1/2 of all people on our planet are under the age of 25.

  • The number of married women in developing countries is expected to grow to 179 million by 2015.

  • Globally, and in sub-Saharan Africa, where fertility is higher than in any other region of the world, surveys indicate that women want fewer children than they are having.

  • Population in the least developed countries (LDCs) will triple by 2050, thus population is growing fastest in the poorest countries, those least able to provide for basic needs and create opportunities.

  • In the countries most affected by HIV/AIDS, the situation is one of rising death rates and lower life expectancy.

  • An estimated 11.7 million refugees have fled their own countries to escape from persecution, armed conflict or violence. People internally displaced within their own countries number 20-25 million, many increasing the numbers of the urban poor.

Population, Poverty and Environment

  • The 20 per cent of the world’s people living in the highest income countries are responsible for 86 per cent of total private consumption compared with the poorest 20 per cent, who account for only 1.3 per cent.

  • The richest fifth account for 53 per cent of carbon dioxide emissions, the poorest fifth, 3 per cent.

  • A child born in the industrial world adds more to consumption and pollution levels in one lifetime than do 30 to 50 children born in developing countries.

  • Additionally, in the next 25 years, the world will experience a 2 billion gain in population, almost all in developing countries, least able to bear the burdens of additional services and care.

  • Least developed countries are estimated to triple their populations in the next 50 years.

  • Some 60 per cent of the world's poor live in fragile and highly vulnerable areas – on arid and semi-arid lands, on steep slopes and in forests.

Urbanization & Migration

  • The urban proportion is projected to rise to 53 per cent in 2015 and reach 58 per cent in 2025

  • Urbanization levels are rising particularly rapidly in less developed regions. The proportion of the world’s urban population living in these regions is projected to increase from 32 per cent in 2000 to 45 per cent in 2025 (Figure 4).  

  • Looked at in another way, in 2000 some 40 per cent of people living in less developed regions were urban: by 2025 this figure is projected to grow to 54 per cent. Megacities, or agglomerations of 10 million or more inhabitants – are becoming ever-more prominent. 

  • With globalization, social unrest, economic and political crises, and natural disasters, there is an unprecedented rise in numbers of migrants. More than 125 million people now live outside their countries of birth.

FIGURE 4:
Estimated and Projected Distribution of Global Population by Urban and Rural Residence, 2000 and 2025

Population Ageing & Poverty

  • Population ageing is the shift in the age distribution of the population where the relative share of persons at older ages increases and the share of persons at younger ages decreases. This is distinct from absolute increases in the number of older persons that can occur even if their share does not increase. Populations are ageing because of lower fertility rates and lower mortality rates.

  • According to the United Nations definition, persons 60 years and over are considered elderly. In 2000, 10 per cent of the world's population was 60 years old or over or about 600 million persons. The majority of older persons are women. About two-thirds of older persons live in developing countries. Most live in rural areas. By 2050, 21 per cent of the world's population is expected to be 60 years old or over.

  • The fastest growing age group is the oldest-old, those aged 80 years and over. They are growing at a rate of 3.8 per cent per year, compared to the age group 60 years and over which is growing at 2 per cent per year. Globally, the total population is growing at a rate of 1.2 per cent annually.

  • Developed regions have a much larger percentage of older persons than developing regions. For example, in 2000, the percentage of older persons was as follows: Africa – 5%, Asia – 9%, Latin America and the Caribbean – 8%, Europe – 20%, Northern America – 16% and Oceania – 13%.

  • Population ageing is one of humanity's major achievements. However, it is also a major challenge because many developing countries are not prepared to satisfy all the needs of the growing numbers of older persons in their populations. Population ageing in developing countries is taking place at much lower levels of socio-economic development than was the case in developed countries. Older persons are consistently among the poorest and most vulnerable, especially widows and the childless.

United Nations Population Fund in Action:
Addressing the challenges of population ageing

  • UNFPA promotes policy dialogue and seeks to ensure that the development agenda gives adequate consideration to the implications of population ageing and intergenerational issues.

  • UNFPA supports training of policy makers and programme planners to respond to the challenges of population ageing.

  • UNFPA supports research on population ageing, its socio-cultural aspects and its social and economic implications.

  • UNFPA supports analysis of survey data on the poverty and socio-economic vulnerability of older persons and qualitative data collection taking account the voices of the older poor.

  • UNFPA promotes policies that support gender equality of older persons

  • UNFPA advocates for support to family caregivers of elderly relatives.

  • UNFPA promotes support systems for elderly caregivers of AIDS victims and AIDS orphans.

  • UNFPA supports systems to combat all forms of discrimination, violence and abuse of the elderly.

Population Resource Flows

  • The ICPD Programme of Action estimated that implementation of the population and reproductive health package in the developing countries and countries with economies in transition would cost US $17 billion by the year 2000. Approximately two thirds of the projected costs would come from the countries themselves and one third, or $5.7 billion, would come from the international donor community.

  • Financial Resource Flows for Population Activities is a UNFPA report previously published under the title of Global Population Assistance Report, that monitors progress in achieving the financial resource targets required for implementing the Programme of Action of the International Conference on Population and Development (ICPD) agreed to in Cairo in 1994. The report provides information on trends in bilateral, multilateral and foundation/NGO assistance to population activities in developing countries and estimates of domestic expenditures reported by developing countries.

  • The Cairo goal of mobilizing $17 billion for population activities by the year 2000 has not been met. Both donor and developing countries have a long way to go before reaching the financial targets of the ICPD. International population assistance totalled $2.6 billion in 2000, the latest year for which information is available. Population assistance from donor countries represented 2.93 per cent of official development assistance in 2000. The top five donors in 2000 were: the United States, the Netherlands, the United Kingdom, Japan and Germany.

  • In 2000, 144 countries benefited from international population assistance. Sub-Saharan Africa received the largest share of assistance (44 per cent), followed by Asia and the Pacific (32 per cent), Latin America and the Caribbean (13 per cent), Western Asia and North Africa (9 per cent), and Eastern and Southern Europe (2 per cent). Most domestic resource flows originate in a few large countries. The majority of developing countries are not in a position to generate the necessary funds to cover the cost of their population programmes. Many Governments, as well as national NGOs, rely heavily on external assistance to finance population activities. Each year data is collected for past fiscal year and the outputs are presented to the following year’s session of the Commission on Population and Development.


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