India is the second most populous country in the world, and its population is spread unevenly across the country. The distribution of population refers to the way people are spread over the geographical space of India, while density measures the pressure of people on the land. The growth of population describes how the numbers have changed over time, and composition describes the structure of the population in terms of age, sex, literacy and occupation. Together, these dimensions give a complete picture of the demographic condition of India.
India's population as per the 2011 Census is about 121 crore, which is more than the combined population of North America, South America and Australia. The distribution of this vast population is highly uneven: some states like Uttar Pradesh and Bihar have very large populations, while states like Sikkim and Mizoram have very small populations. This unevenness is the result of a combination of physical, economic, social and historical factors.
The population of India is concentrated in the northern plains, the coastal plains and the river deltas, while the Himalayan region, the desert of Rajasthan and the northeastern hills have sparse population. Uttar Pradesh is the most populous state of India, followed by Maharashtra and Bihar. The distribution of population is largely controlled by physical factors such as relief, climate, soil and water, and by economic factors such as agriculture, industry, mining and urbanisation.
The distribution of population can be studied at different scales. At the national level, population is concentrated in the fertile Indo-Gangetic plain and along the coasts. Within states, population is denser near rivers, towns and industrial areas. The density pattern of India's population shows great variation, with the Gangetic plain and the coastal deltas having very high densities and the Thar desert and the high Himalayas having very low densities.
The density of population in India has been increasing steadily with the growth of population. As per the 2011 Census, the average density of population in India is 382 persons per square kilometre. This is much higher than the world average and reflects the great pressure of population on the land of India. Bihar has the highest density among the large states, with more than 1100 persons per square kilometre, followed by West Bengal and Kerala.
The density of population varies widely across the country. The state of Bihar, the coastal plains and the river deltas have very high densities, while the states of the northeastern region, the Himalayan states and the desert areas of Rajasthan have low densities. The union territory of Delhi has the highest density among all states and union territories. The density of population is an important indicator of the pressure of population on land and resources.
The growth of population in India has passed through several phases. In the early decades of the twentieth century, the growth rate was low because of high death rates. The decade 1921-1931 is considered a turning point, as the population began to grow rapidly after 1921 due to a decline in death rates. The period from 1951 to 1981 witnessed a rapid growth of population, often called the period of population explosion, with high birth rates and falling death rates.
Since 1981, the growth rate of India's population has started to decline gradually, though the absolute increase in population remains large because of the huge base population. The decadal growth rate has fallen from over 24 per cent in the 1970s to about 17.7 per cent in the decade 2001-2011. The slowing of population growth is a result of falling birth rates, rising literacy, especially female literacy, and the spread of family planning. India is now passing through the late expanding stage of the demographic transition.
The composition of India's population is described by its age structure, sex ratio, literacy and occupational structure. The age structure shows that India has a young population, with a large proportion in the age group of 0 to 14 years and a growing share in the working-age group of 15 to 59 years. This large working-age population gives India the opportunity of a demographic dividend, which can boost economic growth if the young people are educated and employed.
The sex ratio of India's population has historically been unfavourable to females, and as per the 2011 Census it is 943 females per 1000 males. The literacy rate of India has improved to about 74 per cent as per the 2011 Census, with a significant gap between male and female literacy. The occupational structure shows that although the share of agriculture in the national income has fallen, a large proportion of the workforce is still engaged in primary activities, indicating the slow pace of structural transformation of the Indian economy.
The distribution, density, growth and composition of population vary greatly from region to region in India. The northern plains and the coastal states have high densities and low growth rates because of high urbanisation and better development. In contrast, the states of the northern and eastern parts of the country, such as Bihar, Jharkhand and the northeastern states, have higher growth rates and a younger population.
The sex ratio also varies regionally, with Kerala having the highest sex ratio and some states like Haryana and Delhi having very low sex ratios. The literacy rates are highest in Kerala and lowest in Bihar. These regional variations reflect the differences in economic development, social customs, education and the status of women across the states of India, and they have important implications for planning and policy making.
| Indicator | Value |
|---|---|
| Total Population | About 121 crore |
| Density | 382 persons per sq km |
| Decadal Growth (2001-11) | About 17.7 per cent |
| Sex Ratio | 943 females per 1000 males |
| Literacy Rate | About 74 per cent |
| Category | States |
|---|---|
| Very High Density | Bihar, West Bengal, Kerala, Uttar Pradesh |
| Low Density | Arunachal Pradesh, Mizoram, Sikkim, Rajasthan (desert parts) |
| Highest among States | Bihar (over 1100 per sq km) |
| Highest among UTs | Delhi |
The population of India is vast, unevenly distributed and growing, though its rate of growth has begun to decline. The fertile plains, coastal regions and deltas support dense populations, while the Himalayas, the desert and the northeastern hills remain sparsely settled. The growth of population passed through its 'great divide' in 1921 and its phase of explosion between 1951 and 1981, and it now shows a declining rate with a young age structure. The composition of the population, with its low sex ratio, improving literacy and heavy dependence on primary activities, reveals both the achievements and the challenges of India's demographic situation. Understanding these patterns is essential for planning development, education, health and employment in India.
Keywords: Population distribution, population density, population growth, 2011 census, sex ratio, literacy, demographic dividend, occupational structure.