In 2023, India accounted for 17.91 percent of the world's population. India's share of the global population has remained constant, with a decline since 2019.

In 2022, India overtook China as the world's most populous country and now has almost 1.46 billion people. China now has the second-largest population in the world, still with just over 1.4 billion inhabitants, however, its population went into decline in 2023. Global population As of 2025, the world's population stands at almost 8.2 billion people and is expected to reach around 10.3 billion people in the 2080s, when it will then go into decline. Due to improved healthcare, sanitation, and general living conditions, the global population continues to increase; mortality rates (particularly among infants and children) are decreasing and the median age of the world population has steadily increased for decades. As for the average life expectancy in industrial and developing countries, the gap has narrowed significantly since the mid-20th century. Asia is the most populous continent on Earth; 11 of the 20 largest countries are located there. It leads the ranking of the global population by continent by far, reporting four times as many inhabitants as Africa. The Demographic Transition The population explosion over the past two centuries is part of a phenomenon known as the demographic transition. Simply put, this transition results from a drastic reduction in mortality, which then leads to a reduction in fertility, and increase in life expectancy; this interim period where death rates are low and birth rates are high is where this population explosion occurs, and population growth can remain high as the population ages. In today's most-developed countries, the transition generally began with industrialization in the 1800s, and growth has now stabilized as birth and mortality rates have re-balanced. Across less-developed countries, the stage of this transition varies; for example, China is at a later stage than India, which accounts for the change in which country is more populous - understanding the demographic transition can help understand the reason why China's population is now going into decline. The least-developed region is Sub-Saharan Africa, where fertility rates remain close to pre-industrial levels in some countries. As these countries transition, they will undergo significant rates of population growth

India Census: Population: Age: 100+ data was reported at 605,778.000 Person in 2011. This records an increase from the previous number of 139,472.000 Person for 2001. India Census: Population: Age: 100+ data is updated yearly, averaging 151,646.000 Person from Mar 1991 (Median) to 2011, with 3 observations. The data reached an all-time high of 605,778.000 Person in 2011 and a record low of 139,472.000 Person in 2001. India Census: Population: Age: 100+ data remains active status in CEIC and is reported by Census of India. The data is categorized under India Premium Database’s Demographic – Table IN.GAD002: Census: Population: by Single Age.

The median age in India was 27 years old in 2020, meaning half the population was older than that, half younger. This figure was lowest in 1970, at 18.1 years, and was projected to increase to 47.8 years old by 2100. Aging in India India has the second largest population in the world, after China. Because of the significant population growth of the past years, the age distribution remains skewed in favor of the younger age bracket. This tells a story of rapid population growth, but also of a lower life expectancy. Economic effects of a young population Many young people means that the Indian economy must support a large number of students, who demand education from the economy but cannot yet work. Educating the future workforce will be important, because the economy is growing as well and is one of the largest in the world. Failing to do this could lead to high youth unemployment and political consequences. However, a productive and young workforce could provide huge economic returns for India.

Graph and download economic data for Employment to Population Ratio for India (SLEMPTOTLSPZSIND) from 1991 to 2024 about employment-population ratio, India, employment, and population.

United States Employment: American Indian or Alaska Native data was reported at 1,784.000 Person th in Apr 2025. This records a decrease from the previous number of 1,819.000 Person th for Mar 2025. United States Employment: American Indian or Alaska Native data is updated monthly, averaging 1,329.500 Person th from Jan 2000 (Median) to Apr 2025, with 304 observations. The data reached an all-time high of 1,980.000 Person th in Feb 2025 and a record low of 837.000 Person th in Oct 2003. United States Employment: American Indian or Alaska Native data remains active status in CEIC and is reported by U.S. Bureau of Labor Statistics. The data is categorized under Global Database’s United States – Table US.G: Current Population Survey: Employment.

Age dependency ratio (% of working-age population) in India was reported at 47.01 % in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. India - Age dependency ratio (% of working-age population) - actual values, historical data, forecasts and projections were sourced from the World Bank on July of 2025.

South Africa Population: Mid Year: Indian and Asian: Female: Above 80 Years data was reported at 14,151.000 Person in 2018. This records an increase from the previous number of 10,427.150 Person for 2017. South Africa Population: Mid Year: Indian and Asian: Female: Above 80 Years data is updated yearly, averaging 7,303.049 Person from Jun 2001 (Median) to 2018, with 18 observations. The data reached an all-time high of 14,151.000 Person in 2018 and a record low of 3,838.000 Person in 2001. South Africa Population: Mid Year: Indian and Asian: Female: Above 80 Years data remains active status in CEIC and is reported by Statistics South Africa. The data is categorized under Global Database’s South Africa – Table ZA.G003: Population: Mid Year: by Group, Age and Sex.

Population ages 65 and above, total in India was reported at 99540924 Persons in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. India - Total Population for Age 65 and above (only 2005 and 2010) (in number of people) - actual values, historical data, forecasts and projections were sourced from the World Bank on July of 2025.

Graph and download economic data for Age Dependency Ratio: Older Dependents to Working-Age Population for India (SPPOPDPNDOLIND) from 1960 to 2024 about 64 years +, working-age, ratio, India, and population.

India Population: Census: Age: 25 to 29 year data was reported at 101,413.965 Person th in 03-01-2011. This records an increase from the previous number of 83,422.000 Person th for 03-01-2001. India Population: Census: Age: 25 to 29 year data is updated decadal, averaging 83,422.000 Person th from Mar 1991 (Median) to 03-01-2011, with 3 observations. The data reached an all-time high of 101,413.965 Person th in 03-01-2011 and a record low of 69,239.000 Person th in 03-01-1991. India Population: Census: Age: 25 to 29 year data remains active status in CEIC and is reported by Office of the Registrar General & Census Commissioner, India. The data is categorized under India Premium Database’s Demographic – Table IN.GAD001: Census: Population: by Age Group.

India Population: Census: Age: 15 to 19 Year data was reported at 120,526.449 Person th in 03-01-2011. This records an increase from the previous number of 100,216.000 Person th for 03-01-2001. India Population: Census: Age: 15 to 19 Year data is updated decadal, averaging 100,216.000 Person th from Mar 1991 (Median) to 03-01-2011, with 3 observations. The data reached an all-time high of 120,526.449 Person th in 03-01-2011 and a record low of 79,035.000 Person th in 03-01-1991. India Population: Census: Age: 15 to 19 Year data remains active status in CEIC and is reported by Office of the Registrar General & Census Commissioner, India. The data is categorized under India Premium Database’s Demographic – Table IN.GAD001: Census: Population: by Age Group.

Census data reveals that population density varies noticeably from area to area. Small area census data do a better job depicting where the crowded neighborhoods are. In this map, the yellow areas of highest density range from 30,000 to 150,000 persons per square kilometer. In those areas, if the people were spread out evenly across the area, there would be just 4 to 9 meters between them. Very high density areas exceed 7,000 persons per square kilometer. High density areas exceed 5,200 persons per square kilometer. The last categories break at 3,330 persons per square kilometer, and 1,500 persons per square kilometer.This dataset is comprised of multiple sources. All of the demographic data are from Michael Bauer Research with the exception of the following countries:Australia: Esri Australia and MapData ServicesCanada: Esri Canada and EnvironicsFrance: Esri FranceGermany: Esri Germany and NexigaIndia: Esri India and IndicusJapan: Esri JapanSouth Korea: Esri Korea and OPENmateSpain: Esri España and AISUnited States: Esri Demographics

India Census: Population: by Religion: Hindu: Male data was reported at 498,306,968.000 Person in 2011. This records an increase from the previous number of 428,678,554.000 Person for 2001. India Census: Population: by Religion: Hindu: Male data is updated yearly, averaging 463,492,761.000 Person from Mar 2001 (Median) to 2011, with 2 observations. The data reached an all-time high of 498,306,968.000 Person in 2011 and a record low of 428,678,554.000 Person in 2001. India Census: Population: by Religion: Hindu: Male data remains active status in CEIC and is reported by Census of India. The data is categorized under India Premium Database’s Demographic – Table IN.GAE001: Census: Population: by Religion.

Population ages 15-64 (% of total population) in India was reported at 68.02 % in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. India - Population ages 15-64 (% of total) - actual values, historical data, forecasts and projections were sourced from the World Bank on June of 2025.

Census: Number of Migrants: All India data was reported at 314,541,350.000 Person in 2001. This records an increase from the previous number of 232,112,973.000 Person for 1991. Census: Number of Migrants: All India data is updated yearly, averaging 273,327,161.500 Person from Mar 1991 (Median) to 2001, with 2 observations. The data reached an all-time high of 314,541,350.000 Person in 2001 and a record low of 232,112,973.000 Person in 1991. Census: Number of Migrants: All India data remains active status in CEIC and is reported by Census of India. The data is categorized under Global Database’s India – Table IN.GAG001: Census of India: Migration: Number of Migrants: by States.

Population ages 15-19, female (% of female population) in India was reported at 8.769 % in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. India - Population ages 15-19, female (% of female population) - actual values, historical data, forecasts and projections were sourced from the World Bank on June of 2025.

Population ages 80 and above, female (% of female population) in India was reported at 1.2274 % in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. India - Population ages 80 and above, female (% of female population) - actual values, historical data, forecasts and projections were sourced from the World Bank on July of 2025.

Access to electricity (% of population) in India was reported at 99.5 % in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. India - Access to electricity (% of population) - actual values, historical data, forecasts and projections were sourced from the World Bank on June of 2025.

In the past four centuries, the population of the United States has grown from a recorded 350 people around the Jamestown colony of Virginia in 1610, to an estimated 331 million people in 2020. The pre-colonization populations of the indigenous peoples of the Americas have proven difficult for historians to estimate, as their numbers decreased rapidly following the introduction of European diseases (namely smallpox, plague and influenza). Native Americans were also omitted from most censuses conducted before the twentieth century, therefore the actual population of what we now know as the United States would have been much higher than the official census data from before 1800, but it is unclear by how much. Population growth in the colonies throughout the eighteenth century has primarily been attributed to migration from the British Isles and the Transatlantic slave trade; however it is also difficult to assert the ethnic-makeup of the population in these years as accurate migration records were not kept until after the 1820s, at which point the importation of slaves had also been illegalized. Nineteenth century In the year 1800, it is estimated that the population across the present-day United States was around six million people, with the population in the 16 admitted states numbering at 5.3 million. Migration to the United States began to happen on a large scale in the mid-nineteenth century, with the first major waves coming from Ireland, Britain and Germany. In some aspects, this wave of mass migration balanced out the demographic impacts of the American Civil War, which was the deadliest war in U.S. history with approximately 620 thousand fatalities between 1861 and 1865. The civil war also resulted in the emancipation of around four million slaves across the south; many of whose ancestors would take part in the Great Northern Migration in the early 1900s, which saw around six million black Americans migrate away from the south in one of the largest demographic shifts in U.S. history. By the end of the nineteenth century, improvements in transport technology and increasing economic opportunities saw migration to the United States increase further, particularly from southern and Eastern Europe, and in the first decade of the 1900s the number of migrants to the U.S. exceeded one million people in some years. Twentieth and twenty-first century The U.S. population has grown steadily throughout the past 120 years, reaching one hundred million in the 1910s, two hundred million in the 1960s, and three hundred million in 2007. In the past century, the U.S. established itself as a global superpower, with the world's largest economy (by nominal GDP) and most powerful military. Involvement in foreign wars has resulted in over 620,000 further U.S. fatalities since the Civil War, and migration fell drastically during the World Wars and Great Depression; however the population continuously grew in these years as the total fertility rate remained above two births per woman, and life expectancy increased (except during the Spanish Flu pandemic of 1918).

Since the Second World War, Latin America has replaced Europe as the most common point of origin for migrants, with Hispanic populations growing rapidly across the south and border states. Because of this, the proportion of non-Hispanic whites, which has been the most dominant ethnicity in the U.S. since records began, has dropped more rapidly in recent decades. Ethnic minorities also have a much higher birth rate than non-Hispanic whites, further contributing to this decline, and the share of non-Hispanic whites is expected to fall below fifty percent of the U.S. population by the mid-2000s. In 2020, the United States has the third-largest population in the world (after China and India), and the population is expected to reach four hundred million in the 2050s.