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IGCSE Geography - Revision guide: Population Growth

Population Growth - On this page

World Population growth 

Nigeria - Over-population, causes and consequences

Australia - Under-population, causes and consequences


Definition of Population growth rate: The average annual percent change in the population, resulting from a surplus (or deficit) of births over deaths and the balance of migrants entering and leaving a country. The rate may be positive or negative. The growth rate is a factor in determining how great a burden would be imposed on a country by the changing needs of its people for infrastructure (e.g., schools, hospitals, housing, roads), resources (e.g., food, water, electricity), and jobs. Rapid population growth can be seen as threatening by neighboring countries.


click on image to see a transition graph and a quick revision.

Nigeria Population

The population of Nigeria in 2003 was estimated by the United Nations at 124,009,000, which placed it as number 10 in population among the 193 nations of the world. It is the most populated country in Africa

Nigeria - Population graphs

Population Density Graph

Click on image to access more graphs

Population - a silent killer

In most African countries mass production of children is almost regarded as a show of importance rather than a lack of knowledge of contraception, ignorance, lack of education and stolidity. Read in this article the underlying problems of population growth.

UN - World Population Prospects 2010

The 2010 Revision of the World Population Prospects is the twenty-second round of global demographic estimates and projections undertaken by the Population Division of the United Nations Department of Economic and Social Affairs of the United Nations Secretariat.

Click on image to access data, reports for various countries.

Australia and Nigeria comparison

Click on image above to see a comparison of demographic statistics for Australia and Nigeria

Estimated population growth - Australia

At 31 March 2010, the estimated Australian resident population was 22.272 million people. Australia's population grew by 1.8 per cent during the 12 months preceding 31 March 2010 and the growth rate has been declining since the peak of 2.2 per cent for the 2008 calendar year.

World Population dynamics

Population dynamics are one of the key factors to consider when thinking about development. In the past 50 years the world has experienced an unprecedented increase in population growth. Do you know why? Read the following World Bank report to understand the reasons why...

Australian Population Growth

click on image to see World Population Review data on Australia

In terms of surface area, Australia is the sixth largest country in the world. In terms of population size, the same country is ranked 52nd, it must be very sparsely populated indeed. 

As a result, current estimates claim that Australia’s population density consists of 6.4 people in every square mile of land which makes it second in terms of sparseness to Mongolia.

Want to know what's the population now? Click  HERE to see Australian Bureau of Statistics data.

Australia Demographics graphs

Population Density Graph

click on image to see more graphs

Sustainable Population Strategy for Australia

On Friday 13 May 2011, Minister Burke released Sustainable Australia - Sustainable Communities, A Sustainable Population Strategy for Australia. Quoted from the foreword below

"The objective of a Sustainable Population Strategy will be to ensure that future changes in Australia’s population (size, growth rate, composition and location) are compatible with the sustainability of the economy, environment and communities.

The strategy will consider the policies and programs required to ensure that we can shape and respond to changes in our population to build a sustainable Australia." Read details about this strategy from the image link.