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57 Shrinking, 131 Below Replacement: The Global Scale of Decline
In 2026, 57 of the 242 countries and territories in UN projections are expected to record more deaths than births. But low fertility is already far more widespread: 131 countries and territories now have fertility rates below the replacement level of 2.1.
China is the starkest case. Under the UN's medium-fertility scenario, deaths in China are projected to exceed births by about 29 lakh in 2026. A steeper fertility decline would push more countries into natural population decrease. Several advanced economies are also expected to record more than one lakh excess deaths over births.
| Country | Births minus deaths (lakh, 2026) | Trend & Impact |
|---|---|---|
| China | -28.6 | Rapid workforce contraction; accelerating demographic transition |
| Japan | -8.2 | Severe post-industrial ageing; rural depopulation |
| Russia | -6.6 | Long-term depopulation compounded by geopolitical conflicts |
| Germany | -3.5 | Ageing offset heavily by immigration requirements |
| Italy | -2.9 | Super-aged society; lowest birth records in Southern Europe |
| Ukraine | -2.9 | Severe war-induced demographic displacement & low birth rates |
| Poland | -1.4 | Persistent low fertility and youth emigration |
| South Korea | -1.4 | World's lowest TFR; rapid path to population collapse |
| Spain | -1.3 | Southern European low-fertility trap; rising care demands |
Seven countries and territories already have fertility rates below 1.0. Macao stands at 0.70, Hong Kong at 0.75, South Korea at 0.76, Taiwan at 0.86, Puerto Rico at 0.94, and Singapore at 0.97. A TFR below 1.0 means women are having fewer than one child on average over their lifetimes; without immigration, that points to very rapid population decline. Thailand, with its TFR hovering close to 1.1, could join them soon.
2. India's PositionIndia Adding Most People: But with Lowest Fertility Among Top Gainers
Through natural increase (births minus deaths), 1.3 crore people are estimated to be added to India's population in 2026. This is the largest absolute gain for any country. Yet, when analyzed alongside other high-gain nations, a significant paradox emerges: among the top 10 countries adding the most people, India has the lowest fertility rate at 1.9. Bangladesh and Indonesia are also close to the cusp, with fertility rates around the 2.1 replacement level.
| Top Population Gainers (2026) | Births minus deaths (lakh) | Total Fertility Rate (TFR) |
|---|---|---|
| India | 131.0 | 1.9 |
| Pakistan | 53.0 | 3.4 |
| Nigeria | 49.0 | 4.2 |
| DR Congo | 37.0 | 5.8 |
| Ethiopia | 34.0 | 3.7 |
| Bangladesh | 25.0 | 2.1 |
| Indonesia | 22.0 | 2.1 |
| UR Tanzania | 21.0 | 4.4 |
| Egypt | 18.0 | 2.7 |
| Uganda | 15.0 | 4.0 |
At 5.8 children per woman, the Democratic Republic of the Congo (DR Congo) has the highest fertility rate in this group, adding 37 lakh people in 2026. The fact that India adds nearly 3.5 times more people than DR Congo despite having a TFR that is three times lower (1.9 vs 5.8) is a classic illustration of demographic scale and population momentum in action.
3. Transition TimelinesThe Transition Gap: How Long from Replacement Fall to Population Decline?
In Asia, population decline typically begins about 30 years after fertility falls below replacement level—which represents roughly one generation. The transition gap is 24 years in Russia, but only two years in Germany. In most countries, once population decline begins, it turns steep.
Why did Germany shrink within 2 years of its fertility falling below replacement (1970 to 1972), while China and East Asian nations took 30 years? The delay depends heavily on the initial median age, life expectancy, and infant mortality rates when TFR fell.
Germany was already a demographically old country in 1970, with a median age of 33.2 years vs. China's young median age of 24.1 years in 1991. China reached replacement fertility 21 years after Germany. China in 1991 was a much younger country with middling life expectancy (68.6 years) and relatively high infant mortality. As healthcare improved, infant mortality dropped and life expectancy rose to 78.1 years by 2021, offsetting the drop in births and delaying population shrinkage for three decades.
| Indicator | Germany (1970) | Germany (1972) | China (1991) | China (2021) |
|---|---|---|---|---|
| Total Fertility Rate (TFR) | 2.02 | 1.73 | 1.93 | 1.12 |
| Median Age (Years) | 33.2 | 33.5 | 24.1 | 38.0 |
| Life Expectancy at Birth (Years) | 73.5 | 74.1 | 68.6 | 78.1 |
| Births (000s) | 1,046 | 891 | 22,645 | 10,461 |
| Deaths (000s) | 976 | 965 | 7,782 | 10,760 |
| Net Migrants (000s) | -273 | 336 | -545 | -380 |
When Will India Shrink? Peak Projections and state-Level Disparities
UN population projections estimate that India's population will peak and start shrinking around 2063 under medium-decline scenarios, or around 2047 under steep-decline scenarios. However, India's state-level fertility disparities and structural shifts in family planning indicate that the turning point could arrive earlier than 2047.
A major indicator is the falling median age at last birth in India. A Nature study titled "Changes in Age at Last Birth and Its Determinants in India" (by Mayank Singh, Chander Shekhar, and Neha Shri) found that the median age at last birth has fallen and remained consistently below 30 years since NFHS-3. This reflects a trend of younger marriage-to-childbirth intervals and early sterilization, compressing the reproductive span of Indian women.
NFHS-11992–93 Survey Phase
Median age at last birth was 32.77 years. Larger families and spaced births led to extended reproductive spans.
NFHS-21998–99 Survey Phase
Median age at last birth declined to 30.81 years as contraception access and urbanisation expanded.
NFHS-32005–06 Survey Phase
Median age at last birth crossed below the 30-year threshold to 28.65 years, marking a major cultural shift.
NFHS-42015–16 Survey Phase
Median age at last birth fell to 27.75 years, driven by rapid declines in desired family sizes.
NFHS-52019–21 Survey Phase
Median age at last birth reached its lowest point at 27.59 years. Over half of Indian women complete childbearing before age 28.
Because childbearing is compressed into younger age brackets and desired family sizes have fallen (the ideal fertility rate reported by women in NFHS-5 is 1.6), actual birth rates are declining rapidly. Coupled with the fact that Southern states (TFR ~1.5–1.6) and several districts are already shrinking, India's national demographic peak is highly likely to arrive ahead of the UN's 2047 steep-decline estimate.
Frequently Asked Questions
Why is population still growing if fertility is below replacement level?
Population continues to grow even after Total Fertility Rate (TFR) falls below replacement level (2.1) due to three main forces: (1) Population momentum — a large young cohort already born continues to have children, adding absolute numbers even at lower per-woman fertility; (2) Rising life expectancy — people live longer, so existing population persists longer before deaths catch up with births; (3) Young median age — in countries like India, the median age is around 28, meaning most of the population is in reproductive or pre-reproductive age groups. This combination can sustain population growth for 25-40 years after TFR falls below replacement.What is India's current Total Fertility Rate (TFR) and when did it fall below replacement?
India's TFR was 2.0 as per NFHS-5 (2019-21), marginally below the replacement level of 2.1. India's TFR has fallen dramatically from approximately 5.4 in 1971, to 3.4 (NFHS-1, 1992-93), to 2.2 (NFHS-4, 2015-16), to 2.0 (NFHS-5, 2019-21). The national TFR crossed below replacement level between NFHS-4 and NFHS-5. However, significant state-level disparities persist — Bihar (2.98), UP (2.35) remain above replacement, while Tamil Nadu (1.58), Kerala (1.56) have been below replacement for decades.What is the Demographic Dividend and what is India's window?
The Demographic Dividend refers to accelerated economic growth that can result when the working-age population (15-64) is proportionally larger than dependents (children under 15 and elderly over 65). India's demographic dividend window is estimated to last from approximately 2018 to 2055, providing roughly 35-37 years of relatively lower dependency ratios. Realising this dividend requires massive investment in education, skill development, healthcare, and job creation — otherwise the window becomes a demographic burden rather than a dividend.When is India's population expected to start declining?
UN projections give 2047 under a steep fertility decline scenario and 2063 under medium decline. However, research published in Nature (Singh, Shekhar & Shri) shows that India's median age at last birth has been falling — from 32.77 (NFHS-1, 1992-93) to 27.59 (NFHS-5, 2019-21), meaning half of women stop having children before turning 28. Combined with state-level fertility rates already below replacement in most states, India's national turning point could arrive earlier than 2047.What is the difference between population decline and population ageing?
Population decline refers to an absolute reduction in total population (deaths exceeding births, net of migration). Population ageing refers to a structural shift in the age composition — an increasing proportion of elderly people relative to working-age and younger people. Population ageing typically precedes absolute decline by decades and has severe economic consequences: rising old-age dependency ratios, pension and healthcare fiscal pressures, labour force shrinkage, and slower economic growth. India is currently in early-stage ageing; its old-age dependency ratio is ~9%, but will rise sharply as the current young cohort ages over the next 30 years.Take this topic into GyanGram.
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