Important for UPSC prelims – Geography
What is India’s Demographic Transition
Introduction
Demographic Transition refers to the historical shift in population growth patterns from high birth and death rates to low birth and death rates as a country develops economically. India is currently in the late Phase III (Late Expanding / Transitioning to Phase IV) of the Demographic Transition Model (DTM), characterized by falling birth rates, low death rates, and a rapidly expanding working-age population.
Historical Phases of Population Growth in India
India’s demographic history is categorized into four distinct phases:
| Phase | Period | Nomenclature | Key Characteristics |
| Phase I | 1901 – 1921 | Stagnant Population | High birth rates (CBR) and high crude death rates (CDR). Year 1921 is called the “Great Divide” as growth was negative (-0.31%) during 1911-21 due to epidemics and famines. |
| Phase II | 1921 – 1951 | Steady Growth | Mortality rates began to fall due to improved sanitation and health measures, while birth rates remained high. |
| Phase III | 1951 – 1981 | Population Explosion | Rapid drop in CDR with persistent high CBR; annual growth rate peaked at ~2.2%. |
| Phase IV | 1981 – Present | High Growth with Slowing Rate | Declining fertility rates driven by urbanisation, literacy, and family planning; overall growth rate is steadily moderating. |
Core Concepts & Indicators
1. Total Fertility Rate (TFR) & Replacement Level
- Total Fertility Rate (TFR): The average number of children born to a woman during her reproductive years (15–49 years).
- National TFR: According to NFHS-5 and recent data, India’s TFR has fallen to 2.0, dropping below the replacement level of 2.1 (the rate at which a population exactly replaces itself from one generation to the next without migration).
2. The Demographic Dividend
- Definition: The economic growth potential that results from shifts in a population’s age structure—specifically when the share of the working-age population (15–64 years) is larger than the non-working-age share (dependents: <15 and >65 years).
- India’s Window: India entered its demographic dividend window around 2005–2006, which is expected to peak around 2041 and last until 2055–2060.
- Prerequisite: Realising the dividend requires heavy investments in human capital—education, skill development, healthcare, and employment generation.
3. Regional Asymmetry (Demographic Divergence)
- Southern & Western States: (e.g., Kerala, Tamil Nadu, Maharashtra) Reached sub-replacement fertility earlier and are experiencing faster population ageing and impending labor shortages.
- Northern & Central States: (e.g., Bihar, Uttar Pradesh, Jharkhand) Possess higher TFR and a younger median age, driving the national workforce supply.
Conclusion
India’s demographic transition marks a structural shift from a youth-heavy demographic to a maturing society.
| This concept has elaborately described under the article: India’s Changing Demography: Understanding Youth and Aspirations and Family Formation |