The world's population first reached one billion people in 1803, and reach eight billion in 2023, and will peak at almost 11 billion by the end of the century. Although it took thousands of years to reach one billion people, it did so at the beginning of a phenomenon known as the demographic transition; from this point onwards, population growth has skyrocketed, and since the 1960s the population has increased by one billion people every 12 to 15 years. The demographic transition sees a sharp drop in mortality due to factors such as vaccination, sanitation, and improved food supply; the population boom that follows is due to increased survival rates among children and higher life expectancy among the general population; and fertility then drops in response to this population growth. Regional differences The demographic transition is a global phenomenon, but it has taken place at different times across the world. The industrialized countries of Europe and North America were the first to go through this process, followed by some states in the Western Pacific. Latin America's population then began growing at the turn of the 20th century, but the most significant period of global population growth occurred as Asia progressed in the late-1900s. As of the early 21st century, almost two thirds of the world's population live in Asia, although this is set to change significantly in the coming decades. Future growth The growth of Africa's population, particularly in Sub-Saharan Africa, will have the largest impact on global demographics in this century. From 2000 to 2100, it is expected that Africa's population will have increased by a factor of almost five. It overtook Europe in size in the late 1990s, and overtook the Americas a decade later. In contrast to Africa, Europe's population is now in decline, as birth rates are consistently below death rates in many countries, especially in the south and east, resulting in natural population decline. Similarly, the population of the Americas and Asia are expected to go into decline in the second half of this century, and only Oceania's population will still be growing alongside Africa. By 2100, the world's population will have over three billion more than today, with the vast majority of this concentrated in Africa. Demographers predict that climate change is exacerbating many of the challenges that currently hinder progress in Africa, such as political and food instability; if Africa's transition is prolonged, then it may result in further population growth that would place a strain on the region's resources, however, curbing this growth earlier would alleviate some of the pressure created by climate change.

Abstract (en): This data collection contains demographic statistics for the populations of 171 countries or areas throughout the world between 1966 and 1974. The data were prepared by the Statistical Office of the United Nations using as primary source a set of questionnaires sent monthly and annually to statistical services and other appropriate government offices. Data include total population by country or area for the years 1966-1974, for males and females, divided into 18 age groups. Other data include ethnic group, urban/rural code, and year, type, and reliability of source document. The populations of 171 countries or areas throughout the world between the years 1966 and 1974.

Chart and table of Canada population from 1950 to 2025. United Nations projections are also included through the year 2100.

Chart and table of India population from 1950 to 2025. United Nations projections are also included through the year 2100.

Abstract

IPUMS-International is an effort to inventory, preserve, harmonize, and disseminate census microdata from around the world. The project has collected the world's largest archive of publicly available census samples. The data are coded and documented consistently across countries and over time to facillitate comparative research. IPUMS-International makes these data available to qualified researchers free of charge through a web dissemination system.

The IPUMS project is a collaboration of the Minnesota Population Center, National Statistical Offices, and international data archives. Major funding is provided by the U.S. National Science Foundation and the Demographic and Behavioral Sciences Branch of the National Institute of Child Health and Human Development. Additional support is provided by the University of Minnesota Office of the Vice President for Research, the Minnesota Population Center, and Sun Microsystems.

Geographic coverage

National coverage

Analysis unit

Households, individuals

UNITS IDENTIFIED: - Dwellings: No - Vacant units: No - Households: No - Individuals: Yes - Group quarters: No

UNIT DESCRIPTIONS: - Group quarters: Institutions where people reside on a permanent or semi-permanent basis and in which the residents are identified with the institution rather than with any family relationship.

Universe

Residents of Liberia at the time of the census

Kind of data

Census/enumeration data [cen]

Sampling procedure

MICRODATA SOURCE: Liberian Institute of Statistics and Geo-Information Systems

SAMPLE DESIGN: Sample represents approximately 10 percent of each of the cells obtained by the cross classification of 17 broad age groups, two sex categories and two divisions of working and non-working. The sample selected from each of the 68 strata is considered representative of the Liberian population.

SAMPLE UNIT: Individuals

SAMPLE FRACTION: 10%

SAMPLE SIZE (person records): 150,256

Mode of data collection

Face-to-face [f2f]

Research instrument

Single form with sections on individuals and housing characteristics and amenities.

Ghana GH: Population: as % of Total: Aged 0-14 data was reported at 38.522 % in 2017. This records a decrease from the previous number of 38.677 % for 2016. Ghana GH: Population: as % of Total: Aged 0-14 data is updated yearly, averaging 44.202 % from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 46.123 % in 1974 and a record low of 38.522 % in 2017. Ghana GH: Population: as % of Total: Aged 0-14 data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Ghana – Table GH.World Bank: Population and Urbanization Statistics. Population between the ages 0 to 14 as a percentage of the total population. Population is based on the de facto definition of population.; ; World Bank staff estimates based on age/sex distributions of United Nations Population Division's World Population Prospects: 2017 Revision.; Weighted average;

United States US: Urban Population Growth data was reported at 0.952 % in 2017. This records a decrease from the previous number of 0.968 % for 2016. United States US: Urban Population Growth data is updated yearly, averaging 1.152 % from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 2.449 % in 1960 and a record low of 0.927 % in 1974. United States US: Urban Population Growth data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s United States – Table US.World Bank.WDI: Population and Urbanization Statistics. Urban population refers to people living in urban areas as defined by national statistical offices. It is calculated using World Bank population estimates and urban ratios from the United Nations World Urbanization Prospects.; ; World Bank staff estimates based on the United Nations Population Division's World Urbanization Prospects: 2018 Revision.; Weighted average;

Korea Population: Female: Ages 70-74: % of Female Population data was reported at 3.863 % in 2017. This records an increase from the previous number of 3.769 % for 2016. Korea Population: Female: Ages 70-74: % of Female Population data is updated yearly, averaging 1.656 % from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 3.863 % in 2017 and a record low of 1.175 % in 1974. Korea Population: Female: Ages 70-74: % of Female Population data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s South Korea – Table KR.World Bank.WDI: Population and Urbanization Statistics. Female population between the ages 70 to 74 as a percentage of the total female population.; ; World Bank staff estimates based on age/sex distributions of United Nations Population Division's World Population Prospects: 2017 Revision.; ;

Chart and table of Africa population from 1950 to 2025. United Nations projections are also included through the year 2100.

In 1800, the population of Portugal was estimated to be approximately 2.8 million; a figure that would see gradual growth throughout the 19th century. During this time, Portugal experienced a series of political and military challenges, including an invasion by Napoleonic France, the cessation of Brazil (it's largest colony), and a civil war caused by royal succession; nonetheless, Portugal remained an international power throughout the 1800s, with significant spheres of influence on all continents. 20th century At the turn of the 20th century, Portugal's international standing began to diminish, and its weakening position in Africa initiated a wave of civil unrest in the metropole. In 1908, following a period of political instability, King Carlos I and his heir were assassinated in Lisbon, and the 5 October 1910 Revolution permanently brought an end to the monarchy. This, however, did not end the political instability, which was further exacerbated by the impacts of the First World War and Spanish Flu pandemic (which, combined, resulted in the deaths of more than 220,000 Portuguese people). Portugal would then experience a rapid population gain following the establishment of the Second Republic (Estado Novo) in 1933, under the 34 year reign of António de Oliveira Salazar, which would see Portugal’s currency stabilized and significant economic growth lasting until the 1960s. However, Portugal’s population would decline in the early 1960s, as escalating colonial wars overseas, combined with increasing political instability at home would see many citizens emigrating elsewhere in Europe; particularly youths attempting to avoid the country’s military draft. Growth would largely resume following the end of the dictatorship with the Carnation Revolution of 1974, as many Portuguese migrants in the now independent colonies would return to Europe. Recent decades While growth would slow (and decline slightly) amidst economic troubles in the 1980s, Portugal’s population generally increased until 2008, when it peaked at 10.6 million people. From 2008 until today, a combination of the long term impacts of the 2008 financial crisis and declining fertility rates have resulted in a steady drop in the country’s population. As a result, in 2020, Portugal is estimated to have fallen to 10.2 million people, although it is also regarded as one of the most stable, peaceful and democratic countries in the world.

Chart and table of Philippines population from 1950 to 2025. United Nations projections are also included through the year 2100.

In the immediate aftermath of the Second World War, Germany was split into four zones, each administered by France, the United Kingdom, the United States and the Soviet Union respectively. In 1949, the Soviet-controlled zone formed the German Democratic Republic (East Germany), while the rest became the Federal Republic of Germany (West Germany). In this time, Berlin was also split into four zones, and the three non-Soviet zones formed West Berlin, which was a part of West Germany (although the West's administrative capital was moved to Bonn). One population grows, while the other declines Between 1949 and 1961, an estimated 2.7 million people migrated from East to West Germany. East Germany had a communist government with a socialist economy and was a satellite state of the Soviet Union, whereas West Germany was a liberal democracy with a capitalist economy, and western autonomy increased over time. Because of this difference, West Germany was a much freer society with more economic opportunities. During the German partition, the population of the west grew, from 51 million in 1950 to 62.7 million in 1989, whereas the population of East Germany declined from 18.4 million to just 16.4 million during this time. Little change after reunification In 1989, after four decades of separation, the process of German reunification began. The legal and physical barriers that had split the country were removed, and Germans could freely travel within the entire country. Despite this development, population growth patterns did not change. The population of the 'new states' (East Germany) continued to decline, whereas the population of the west grew, particularly in the 1990s, the first decade after reunification. The reasons for this continued imbalance between German population in the east and west, is mostly due to a low birth rate and internal migration within Germany. Despite the fact that levels of income and unemployment in the new states have gotten closer to those reported for the west (a major obstacle after reunification), life and opportunities in the west continue to attract young Germans from rural areas in the east with detrimental effect on the economy and demography of the new states.

Equatorial Guinea GQ: Population: Male: Ages 25-29: % of Male Population data was reported at 11.473 % in 2017. This records an increase from the previous number of 11.403 % for 2016. Equatorial Guinea GQ: Population: Male: Ages 25-29: % of Male Population data is updated yearly, averaging 7.709 % from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 11.473 % in 2017 and a record low of 6.965 % in 1974. Equatorial Guinea GQ: Population: Male: Ages 25-29: % of Male Population data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Equatorial Guinea – Table GQ.World Bank: Population and Urbanization Statistics. Male population between the ages 25 to 29 as a percentage of the total male population.; ; World Bank staff estimates based on age/sex distributions of United Nations Population Division's World Population Prospects: 2017 Revision.; ;

Graph and download economic data for Refugee Population by Country or Territory of Asylum for Saudi Arabia (SMPOPREFGSAU) from 1974 to 2023 about refugee, Saudi Arabia, World, and population.

Afghanistan Population: Male: Ages 20-24: % of Male Population data was reported at 10.139 % in 2023. This records an increase from the previous number of 10.127 % for 2022. Afghanistan Population: Male: Ages 20-24: % of Male Population data is updated yearly, averaging 8.678 % from Dec 1960 (Median) to 2023, with 64 observations. The data reached an all-time high of 10.139 % in 2023 and a record low of 8.276 % in 1974. Afghanistan Population: Male: Ages 20-24: % of Male Population data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Afghanistan – Table AF.World Bank.WDI: Population and Urbanization Statistics. Male population between the ages 20 to 24 as a percentage of the total male population.;United Nations Population Division. World Population Prospects: 2024 Revision.;;

Chart and table of Cambodia population from 1950 to 2025. United Nations projections are also included through the year 2100.

Hong Kong HK: Population in Largest City: as % of Urban Population data was reported at 99.637 % in 2017. This records an increase from the previous number of 99.540 % for 2016. Hong Kong HK: Population in Largest City: as % of Urban Population data is updated yearly, averaging 99.382 % from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 100.000 % in 2010 and a record low of 94.548 % in 1974. Hong Kong HK: Population in Largest City: as % of Urban Population data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Hong Kong – Table HK.World Bank: Population and Urbanization Statistics. Population in largest city is the percentage of a country's urban population living in that country's largest metropolitan area.; ; United Nations, World Urbanization Prospects.; Weighted average;

Germany DE: Population: Male: Ages 55-59: % of Male Population data was reported at 8.345 % in 2022. This records an increase from the previous number of 8.336 % for 2021. Germany DE: Population: Male: Ages 55-59: % of Male Population data is updated yearly, averaging 6.164 % from Dec 1960 (Median) to 2022, with 63 observations. The data reached an all-time high of 8.345 % in 2022 and a record low of 3.285 % in 1974. Germany DE: Population: Male: Ages 55-59: % of Male Population data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Germany – Table DE.World Bank.WDI: Population and Urbanization Statistics. Male population between the ages 55 to 59 as a percentage of the total male population.;United Nations Population Division. World Population Prospects: 2022 Revision.;;

Netherlands NL: Population: Male: Ages 55-59: % of Male Population data was reported at 7.114 % in 2017. This records an increase from the previous number of 7.009 % for 2016. Netherlands NL: Population: Male: Ages 55-59: % of Male Population data is updated yearly, averaging 4.931 % from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 7.114 % in 2017 and a record low of 4.363 % in 1974. Netherlands NL: Population: Male: Ages 55-59: % of Male Population data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Netherlands – Table NL.World Bank: Population and Urbanization Statistics. Male population between the ages 55 to 59 as a percentage of the total male population.; ; World Bank staff estimates based on age/sex distributions of United Nations Population Division's World Population Prospects: 2017 Revision.; ;

Mexico MX: Population: Male: Ages 25-29: % of Male Population data was reported at 8.519 % in 2017. This records a decrease from the previous number of 8.522 % for 2016. Mexico MX: Population: Male: Ages 25-29: % of Male Population data is updated yearly, averaging 7.669 % from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 9.499 % in 2001 and a record low of 6.428 % in 1974. Mexico MX: Population: Male: Ages 25-29: % of Male Population data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Mexico – Table MX.World Bank.WDI: Population and Urbanization Statistics. Male population between the ages 25 to 29 as a percentage of the total male population.; ; World Bank staff estimates based on age/sex distributions of United Nations Population Division's World Population Prospects: 2017 Revision.; ;