China: population change and family-planning policy
A sourced StudyForA example linking China's population growth and decline to changing anti- and pro-natalist policies. Policy rules changed over time; use the case only if your centre selected China.
Section CASE-6.2.3 · China and population policy · optional named-country example
Exam scope and assessment notes
Cambridge IGCSE Geography 0460, 2027–2029 syllabus, Topic 6.2.3. The syllabus does not prescribe one universal set of named detailed specific examples: centres select places suited to their learners. Sixteen optional StudyForA evidence packs now cover all sixteen example objectives, but the centre's choices are unconfirmed. Match each pack to your centre's chosen place and replace any mismatch before treating the course as complete. Original StudyForA explanations and self-check practice are not Cambridge papers, official grades or teacher-marked coursework. Map, graph and written answers are not automatically assessed. Paper 4 practice uses supplied or invented data and cannot certify safe fieldwork, equipment use or real data collection. Centre-set coursework and specialist teacher review remain pending.
Before you begin
- No previous Geography course is assumed. Use the supplied map, data or scenario; distinguish observation from explanation and support conclusions with evidence.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
What does an anti-natalist policy try to do?
What you will learn
- Describe population growth and recent population decline in China
- Explain the aims and change of China's family-planning policies
- Assess demographic and social effects without claiming policy was the only cause
- Evaluate whether newer birth-support measures can address ageing and low fertility
A very large population continued to grow before declining
China's Seventh National Population Census counted 1.412 billion people in mainland provinces and municipalities in 2020. The comparable 2010 figure was 1.340 billion, so the population grew by about 5.38% over the decade, although the annual growth rate was slowing. Large younger generations and falling mortality can keep a population growing for a time even after the average number of births per woman falls; population momentum is not the same thing as a high current birth rate.
National Bureau of Statistics figures show a different recent pattern: by the end of 2025 the population was 1,404.89 million, down 3.39 million from 2024. There were 7.92 million births and 11.31 million deaths in 2025, and the natural growth rate was −2.41 per thousand. This is a one-year national snapshot, not a prediction for every province. At year end, 23.0% of the population was aged 60 or over and 16.4% was under 16, so population ageing and a smaller child share are important planning pressures.
Family-planning policy changed as the demographic context changed
China began a national family-planning policy in the early 1970s. In 1980 a central open letter advocated the one-child policy, which was written into the Constitution as a basic national policy in 1982. Rules and exceptions varied over time and between places. From 2016, the universal two-child policy allowed all couples two children; in 2021 the law was changed to permit three children and support measures were announced. These are successive policy settings, not one unchanged rule.
The anti-natalist policy aimed to slow rapid population increase. China's National Health Commission describes the policy as having helped restrain growth, but population change also reflected falling mortality, changing fertility preferences, education, urbanisation, women's employment, the size of childbearing cohorts and the cost of raising children. A careful geographical answer treats the policy as one influence and supports a claim about impact with evidence; a before-and-after trend by itself does not prove that the policy caused all of the change.
Policies have intended benefits and long-term trade-offs
Slower growth can ease pressure on housing, food, education, health services and other resources. Smaller families may have more resources per child, and a large working-age population can support production and tax revenue. The effects are not evenly shared: fertility limits affected family choices, and official policy reviews identified a rising older share, fewer working-age people, smaller families and a sex ratio at birth that remained higher than desired as structural concerns.
The three-child policy and later support measures try to encourage births and respond to ageing, but permission alone does not ensure that families will have more children. China's National Health Commission notes that child-rearing and education costs can influence fertility decisions; services such as affordable childcare, parental leave and women's employment protection may matter alongside a legal limit. NBS recorded population decline and fewer births in 2025 after the 2021 policy change. Evaluate both short- and long-term effects, and do not assume that a policy announcement has already reversed a trend.
Sources for this lesson
- Cambridge IGCSE Geography 0460 syllabus, 2027–2029 · objective 6.2.3
- National Bureau of Statistics of China · Seventh National Population Census (2020), population and growth
- National Bureau of Statistics of China · 2025 National Economic and Social Development Statistical Communiqué
- National Health Commission of China · Q&A on the universal two-child policy (2015)
- National Health Commission of China · Third-child policy and supporting measures (2021)
Pause and explain
Why did China's population still grow between the 2010 and 2020 censuses while growth was slowing?
Worked example
Use the census totals to calculate China's population growth from 2010 to 2020 as a percentage, then give one limitation of using this result to explain a population policy's effect.
Show the worked solution
- Find the change: 1,411.8 − 1,339.7 = about 72.1 million people.
- Divide the change by the 2010 population and multiply by 100.
- A national trend over a decade includes other causes, such as mortality, fertility preferences, age structure and migration; it does not isolate policy impact.
Answer The increase was about 72.1 million. 72.1 ÷ 1,339.7 × 100 ≈ 5.38%. This national change does not isolate the effect of family-planning policy from mortality, age structure, migration or wider social change.
Try a topic test
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Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
The 2010 census counted 1,339.7 million people and the 2020 census counted 1,411.8 million. Calculate the percentage increase and state what the annual growth rate did over this period.
Give me a hint
Use the 2010 total as the percentage denominator; compare total growth with the reported average annual rate.
Compare my reasoning
- Change = 1,411.8 − 1,339.7 = 72.1 million.
- Percentage increase = 72.1 ÷ 1,339.7 × 100 ≈ 5.38%.
- The census reports that the average annual growth rate slowed to 0.53%; a larger total population can still result from positive but slower growth.
China's population increased by about 72.1 million, or 5.38%, between the censuses. The average annual growth rate was 0.53% and had slowed; positive growth still increases the total population.
Look for these in your work
- Correct change
- Correct base and percentage
- Slower growth distinguished from population decline
Compare China's 1980 one-child policy with its 2021 three-child policy. Use one 2025 statistic to explain why the policy direction changed, and identify one other factor affecting fertility.
Give me a hint
Explain the intended direction of each policy, then connect the current age/birth structure to the policy shift.
Compare my reasoning
- The 1980 policy advocated smaller families to slow rapid population increase; the 2021 policy permits three children and is intended to encourage births.
- In 2025, 23.0% of the population was aged 60 or above and 7.92 million births were below 11.31 million deaths.
- High costs of raising children, childcare availability, employment, education or the size of childbearing cohorts also affect fertility choices.
The one-child policy sought to reduce population growth, whereas the three-child policy aims to encourage births as China ages. In 2025, 23.0% of the population was aged 60 or over and deaths exceeded births. The legal limit is only one influence: childcare and education costs, employment and cohort size also affect whether families choose to have children.
Look for these in your work
- Policy directions distinguished
- Recent official evidence used accurately
- At least one non-policy factor explained
Evaluate the claim: 'China's one-child policy alone caused today's population decline, so the three-child policy will reverse it.'
Give me a hint
Test each part of the claim against the timeline, multiple causes, age structure and the latest data.
Compare my reasoning
- The policy was one influence on fertility, but mortality decline, urbanisation, education, preferences, costs and the size of childbearing cohorts also shape population change.
- A large population can keep growing through momentum; ageing and a smaller cohort of potential parents can later contribute to natural decrease.
- The 2021 three-child allowance was followed by population decline in 2025, so permission alone has not yet reversed the trend; consider childcare, cost and service support and allow time for evaluation.
The claim is too absolute. Family-planning restrictions helped slow growth, but several demographic and social factors shaped fertility. Population momentum meant the total still grew from 2010 to 2020; later, ageing and deaths exceeding births produced natural decline. By 2025 the population had fallen despite the three-child allowance, so the policy shift alone had not reversed the trend. Affordable childcare, lower family costs and employment support may influence choices, but outcomes must be checked over several years.
Look for these in your work
- Single-cause claim challenged with evidence
- Population momentum and natural change explained
- Policy outcome distinguished from policy announcement
Common mistakes
- Calling every Chinese couple subject to an identical one-child rule throughout the whole period
- Assuming population must decline as soon as fertility falls
- Attributing all changes in births or age structure to one policy
- Confusing natural change (births minus deaths) with total population change
- Presenting the three-child policy as proof that births have increased
- Using 2020 census and 2025 annual data as if they measured the same period or population definition
What can you explain now?
In 2025, did China's population increase naturally: births were 7.92 million and deaths were 11.31 million?
Compare with the explanation
No; deaths exceeded births, so natural change was negative
Subtract births from deaths to identify natural decrease; net migration is a separate component of total change.
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Make it stick
State one period of Chinese population growth and one of decline, describe how family policy changed, and give one limit when judging its effects.
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.