GeographyISC Class 12 · Population of India

India's Population: Size, World Share and Rank (ISC Class 12 Geography)

Updated 17 October 2026 · Fact-checked

Census 2011 counted 1,210.8 million (about 121 crore) people in India, about 17.5 per cent of the world's population on about 2.4 per cent of its land. India's density was 382 persons per sq km. It ranked second after China in 2011 and, according to United Nations estimates, became the most populous country in 2023.

Understand India's Population: Census 2011 Figures, World Share and Rank

1. Size (Census 2011). The census counted 1,210.8 million people (about 121 crore), of whom about 623 million were males and about 588 million females. About 182 million were added in 2001-2011. The decadal growth rate was 17.7 per cent, down from 21.5 per cent in 1991-2001. Density was 382 persons per sq km (325 in 2001). Uttar Pradesh was the most populous state with about 200 million (16.5 per cent of India) and Sikkim the least populous with about 6 lakh.

2. Share of world population and area. India covers about 3.287 million sq km, about 2.4 per cent of the world's land, but holds about 17.5 per cent of the world's people, roughly one in six. The population share is about seven times the area share, so average density is far above the world's, and the pressure falls on land, water, forests and urban services. The high share is explained by fertile alluvial plains, a monsoon climate allowing two or three crops, a long history of settled agriculture and high birth rates in the twentieth century as death rates fell.

3. Rank. In 2011 India was second to China (about 1,340 million). UN estimates show that India overtook China in 2023. Since no census has been held after 2011, present figures are estimates and projections. In an answer, say which year you mean: 'according to Census 2011, second; now, estimated first'.

4. What a census is. A census is an official, complete count of the population at a fixed date. In India it is held every ten years by the Office of the Registrar General and Census Commissioner under the Census Act, 1948. The first synchronous census was in 1881, the first after Independence in 1951, and Census 2011 was the 15th since 1872. Census 2021 was postponed, so Census 2011 remains the latest census used for ISC answers.

5. Implications. Challenges: shrinking land per person and fragmented holdings; high demand for food and water with groundwater over-use in the north-west; millions joining the workforce each year with underemployment in agriculture; shortages of housing, schools, hospitals and growth of slums; and pollution, deforestation and loss of biodiversity. Opportunities: a large working-age population (the demographic dividend) if educated, healthy and employed; a huge domestic market; and skilled human resources. The balance depends on planned development.

India's Population: Census 2011 Figures, World Share and Rank: key facts

Census 2011: 1,210.8 million
about 121 crore
17.5% of world population
Area share: 3.287 million sq km
about 2.4% of world land
population share about 7 times area share
Density: Total population
divided by area in sq km
persons per sq km
India 2011: 382
Decadal growth rate: $(P 2011 - P 2001) / P 2001 x 100∣17.7$
Rank: 2011: second after China | 2023 onwards: first (UN estimates)

How to answer India's Population: Census 2011 Figures, World Share and Rank questions

For population questions, quote the census year, give the figure with its unit, then compute or explain.

1State the census year with every figure.
2For a share, divide the part by the whole and multiply by 100.
3For density, divide population by area in sq km.
4For growth, subtract the earlier population from the later, divide by the earlier and multiply by 100.
5Close with the meaning: pressure on land, services and resources.

India's Population: Census 2011 Figures, World Share and Rank in real life

The idea, met in an everyday situation. Answer the question in your own words, then compare with the model answer. The one-line hook is what to remember.

A classroom of six

Suppose a teacher says that in every group of six people drawn from all over the world, one is Indian, and that the group would occupy only a small fraction of the world's land compared with their number.

Use the 2011 shares to check the teacher's remark and state the ratio of population share to area share.

Try it first, then show the solutionSolution

Population share is about 17.5 per cent, roughly one in six.
Area share is about 2.4 per cent.
Ratio = 17.5 / 2.4 which is about 7.3.

Answer: The remark is correct; the population share is about 7 times the area share.

Memory hook: One in six people, one in forty land.

Planning school seats

Suppose a district officer in a state with density far above the national figure plans new schools and asks why services are under pressure.

Name two pressures that high density puts on services, using the chapter's implications.

Try it first, then show the solutionSolution

Shortage of housing, schools and hospitals.
Growth of slums and pressure on land and water.

Answer: Shortages of housing, schools and hospitals, and slum growth and pressure on land and water.

Memory hook: More people per square kilometre, fewer services per person.

Tricks to remember India's Population: Census 2011 Figures, World Share and Rank

Short memory aids. Say each one aloud once, then use it on a question the same day.

1,210.8 and 17.5
121 crore people, 17.5 per cent of the world; area 2.4 per cent. Flip the two shares to remember the gap.
Use it when: Share questions.
Second then first
2011: second after China. 2023: first by UN estimates. Always date the rank.
Use it when: Rank questions.
Challenge and resource
Land, food, jobs, services, environment on one side; workforce, market, skills on the other.
Use it when: Implications questions.

India's Population: Census 2011 Figures, World Share and Rank: solved examples

Ordered from board level to HOTS. Try each one before you open the solution.

Example 1: Share and rank · 2 marks · Short answerBoard level

State India's share of the world's population and area, and its world rank in Census 2011.

Try it first, then show the solutionSolution

About 17.5 per cent of the world population and about 2.4 per cent of the area.
Rank in 2011: second, after China.

Answer: 17.5 per cent of the population and 2.4 per cent of the area; second in 2011.

Example 2: Define census · 2 marks · Short answerBoard level

What is a census? Who conducts it in India and how often?

Try it first, then show the solutionSolution

A census is the official, complete count of the population at a fixed date.
In India the Registrar General and Census Commissioner conducts it every ten years.

Answer: A complete official count of the population; conducted every ten years by the Registrar General and Census Commissioner.

Example 3: Growth between censuses · 3 marks · Short answerHarder board level

Invented figures: a state had 40 million people in 2001 and 46 million in 2011. Find (a) the increase, (b) the decadal growth rate, and (c) compare it with India's 17.7 per cent.

Try it first, then show the solutionSolution

(a) Increase = 46 - 40 = 6 million.
(b) Growth rate = 6 / 40 x 100 = 15 per cent.
(c) 15 per cent is lower than 17.7 per cent, so the state grew more slowly than India.

Answer: (a) 6 million (b) 15 per cent (c) lower than India's 17.7 per cent.

Example 4: Density from data · 3 marks · Short answerHarder board level

Invented figures: a district has a population of 3,60,000 and an area of 1,200 sq km. Find its density and say whether it is above or below India's density in 2011 (382 persons per sq km).

Try it first, then show the solutionSolution

Density = 360000 / 1200 = 300 persons per sq km.
300 is below 382, so the district is less crowded than the national average.

Answer: 300 persons per sq km, below India's 382.

Example 5: Why a large share on a small area · 5 marks · Long answerHOTS / competency

India holds 17.5 per cent of the world's people on 2.4 per cent of its land. (a) Give two physical reasons. (b) Give one historical reason. (c) State two problems arising and one advantage, linking each to a resource.

Try it first, then show the solutionSolution

(a) Fertile alluvial plains; a monsoon climate that allows two or three crops a year.
(b) A long history of settled agriculture; also high birth rates as death rates fell in the twentieth century.
(c) Problems: shrinking land per person and fragmented holdings; shortage of housing, schools and hospitals. Advantage: a large working-age population (the demographic dividend) if educated and employed.

Answer: Fertile plains and monsoon crops; long settled agriculture and falling death rates; problems on land and services; advantage of a large workforce.

Where students lose marks in India's Population: Census 2011 Figures, World Share and Rank

The slips examiners see most often, and what to write instead.

Mistake: Quoting the rank without the year
India is second in 2011 but now estimated first.
Do this: Always write the year: second (2011); first by UN estimates (2023).
Usually costs: 1 mark.
Mistake: Mixing census years in one answer
Density or growth is quoted from different censuses.
Wrong working
Density 382 and growth 21.5 per cent for the same decade
Right working
2001-2011: growth 17.7 per cent, density 382 in 2011
Do this: Keep all figures from Census 2011 unless the question asks for a comparison.
Usually costs: 1 mark.
Mistake: Dropping units in density
The answer is a bare number.
Do this: Write persons per sq km.
Usually costs: 1 mark.
Mistake: Giving only challenges
The question says implications.
Do this: Add the demographic dividend and the market as opportunities.
Usually costs: 1 to 2 marks.

Exam tips

Learn the five Census 2011 figures: 1,210.8 million, 17.7 per cent, 382, 17.5 per cent and 2.4 per cent.
Write the formula and units for density and growth.
Distinguish a census count from an estimate.
Use the next topics for distribution, growth and migration; here stay with size, share and rank.

Practice questions on India's Population: Census 2011 Figures, World Share and Rank

Write each answer on paper first. Open the hint only if you are stuck, and the answer only when you have finished.

Q1 · 1 mark · MCQBoard level
The decadal growth rate fell from 21.5 per cent (1991-2001) to 17.7 per cent (2001-2011). The fall, in percentage points, was:
(a) 3.8
(b) 39.2
(c) 4.8
(d) 2.1
Hint
Subtract the two rates.
Answer
(a) 3.8, since 21.5 - 17.7 = 3.8.
Q2 · 2 marks · Short answerHarder board level
Invented figures: a country has 120 million people on an area of 60,000 sq km. Compute its density and compare it with India's 382.
Hint
Convert to the same unit.
Answer
Density = 120,000,000 / 60,000 = 2,000 persons per sq km, far above India's 382.
Q3 · 3 marks · Short answerHarder board level
Explain why the gap between India's population share and area share creates pressure on resources.
Hint
Seven times; land, water, services.
Answer
The population share (17.5 per cent) is about seven times the area share (2.4 per cent), so density is high and each person has less land and water, while housing, schools and hospitals are stretched.
Q4 · 4 marks · Long answerHarder board level
State any four challenges and two opportunities of India's large population.
Hint
Land, food, jobs, services; workforce, market.
Answer
Challenges: shrinking per-capita land, high demand for food and water, employment pressure, shortage of housing and health services. Opportunities: a large working-age population and a huge domestic market.
Q5 · 4 marks · Long answerHOTS / competency
A news item says, 'India is now the most populous country, but Census 2011 shows it second.' (a) Explain how both statements can be true. (b) Explain why the first cannot be a census figure.
Hint
Different years and sources.
Answer
(a) Census 2011 put India second after China; UN estimates show India overtook China in 2023. (b) No census has been held after 2011, so the present figure is an estimate or projection, not a count.

Test your recall

Answer in your head or on paper first, then open the card. Pulling an answer out of memory makes it stick far better than re-reading.

1.India's population in Census 2011?Show answer
1,210.8 million.
2.Decadal growth 2001-2011?Show answer
17.7 per cent.
3.Most populous state in 2011?Show answer
Uttar Pradesh.
4.Share of world land area?Show answer
About 2.4 per cent.
5.Which country was ahead of India in 2011?Show answer
China.

India's Population: Census 2011 Figures, World Share and Rank: frequently asked questions

Why is Census 2011 still the latest census?

Census 2021 was postponed and its results have not been published.

Who conducts the census?

The Office of the Registrar General and Census Commissioner.

What is the world share of India's population?

About 17.5 per cent.

What is the demographic dividend?

The benefit of a large working-age population if it is educated, healthy and employed.