A majority of the world's economies now sit below replacement fertility — and India crossed the line without a headline

The World Bank publishes total fertility rate — the average number of children a woman would bear at current age-specific rates — as indicator SP.DYN.TFRT.IN, compiled from the United Nations World Population Prospects (UN Population Division), national statistical offices and Eurostat. The database vintage was last updated 2026-07-13 and its latest year is 2023, with data for 217 individual economies (territories such as Macao, Hong Kong, Puerto Rico and the Faroe Islands are counted separately from their sovereigns). Demographers put the replacement rate — the level at which a population reproduces itself absent migration — at roughly 2.1 births per woman in low-mortality settings. Applying a flat 2.1 benchmark to the 2023 series, 117 of the 217 economies reported fertility below replacement — a majority. That count was 98 in 2013 and 80 in 2000. In 2013 the below-replacement economies were a minority (98 of 217); in 2023 they are the majority. Nineteen economies that were at or above 2.1 in 2013 had fallen below it by 2023. They include India (2.40 to 1.98), the Philippines (3.04 to 1.92), Mexico (2.27 to 1.91), Turkiye (2.11 to 1.51), Argentina (2.33 to 1.50), Ecuador (2.36 to 1.82), Peru (2.32 to 1.98), Nepal (2.36 to 1.98), Sri Lanka (2.18 to 1.97), Tunisia (2.31 to 1.83) and Bahrain (2.17 to 1.82) ^mmodeled. The 2023 distribution is regional. Below the 2.1 line: North America 3 of 3, South Asia 5 of 6, Europe and Central Asia 52 of 58, Latin America and the Caribbean 31 of 42, East Asia and Pacific 17 of 37, the Middle East–North Africa–Afghanistan–Pakistan grouping 7 of 23, and sub-Saharan Africa 2 of 48. The two sub-Saharan economies below replacement are Mauritius (1.40) and Cabo Verde (1.52) ^mmodeled. The lowest rates recorded in 2023 were Macao (0.59), South Korea (0.72), Hong Kong (0.75), Puerto Rico (0.92), Singapore (0.97), Ukraine (0.98) and China (1.00); the highest were Somalia (6.13), Chad (6.12), Niger (6.06), the Democratic Republic of Congo (6.05) and the Central African Republic (6.01) ^mmodeled. The United States was 1.62, Japan 1.20 and France 1.66 ^mmodeled.

The following is analysis, not fact. Read one economy at a time, below-replacement fertility is a national story a demographer files from Seoul or Rome. Read across all 217 economies in a single pull, the 2023 series records a threshold crossing: for the first time across the snapshots examined here (2000, 2013, 2023), the economies below replacement outnumber those above it ^mmodeled. The line the world is described as approaching, on this measure, has already been passed by more than half the board. The decade's additions matter more than the total. The 19 economies that slipped below 2.1 since 2013 are not the usual low-fertility suspects — they are middle-income and populous. India's move from 2.40 to 1.98 is the single largest demographic event in the set by population, and it happened quietly: no summit, no communiqué, a routine revision to a UN series ^mmodeled. The Philippines fell more than a full child (3.04 to 1.92) in ten years ^mmodeled. The pattern is that the frontier of below-replacement fertility has moved out of the rich world and into the countries that were, a decade ago, the demographers' reserve of growth ^mmodeled. What remains above the line is now almost a single region. Of the 100 economies at or above 2.1 in 2023, 46 are in sub-Saharan Africa — nearly half — and the region keeps 46 of its own 48 economies above replacement while every other region has tipped majority-below or close to it. The global fertility map has resolved into a high-fertility African bloc and a below-replacement everywhere-else, with the exceptions (Israel 2.85, the Palestinian territories 3.31, several Pacific island states, a handful of Central Asian and Arab states) legible as a short list rather than a distribution ^mmodeled. The rates cluster tightly at the low end. Seven economies reported below 1.0 birth per woman in 2023 — a figure that, sustained, halves a birth cohort roughly every generation — and five of the seven are in East Asia or are East Asian territories (Macao, South Korea, Hong Kong, Singapore, China), the other two being Puerto Rico and Ukraine, the latter measured during wartime ^mmodeled. The series cannot say why; it can say the lowest-fertility cluster is geographically concentrated, not scattered.

The strongest counter is that the 2.1 benchmark is wrong for a global count. Replacement fertility is not a universal constant: in high-mortality countries it runs well above 2.1 — up to 2.5 to 3.3 where child mortality is high — so a flat 2.1 line understates how many high-mortality economies are genuinely below their own replacement level, while treating a low-mortality country at 2.0 identically to a high-mortality one. A mortality-adjusted replacement line would move some economies across the threshold in both directions; the "majority below" finding is specific to the conventional 2.1 cut. The count is exact; the benchmark is a convention. Two further cautions. First, the series covers 217 economies including small territories, so "a majority of economies" is not "a majority of the world's people" — though with India, China, the United States, Japan, Brazil and most of Europe below the line, a population-weighted count would also sit well below replacement ^mmodeled. Second, 2023 figures for many countries are UN model estimates rather than complete vital registration, and are subject to revision in the next World Population Prospects round; a single revision can move a borderline economy (India at 1.98, Sri Lanka at 1.97) across the line. Whether below-replacement fertility constitutes a "crisis," a normal stage of the demographic transition, or a consequence of rising female education and choice is a political and analytical judgment this piece does not make — the counts and the map are the facts; their meaning is contested.

The same series reads inversely from Niamey and from Seoul. From a sub-Saharan vantage the striking figure is that the region is now nearly alone above replacement — 46 of 48 economies, with Niger at 6.06 and Chad at 6.12 — carrying the arithmetic of global population growth that every other region has stopped supplying. From Seoul, at 0.72, the same dataset describes a cohort shrinking by more than half each generation, and East Asian governments have characterised the trend in official statements as a national-security and fiscal concern. The UN's own framing is neutral between them: it publishes the rates as a transition, not a verdict. The dataset cannot adjudicate whether 46-of-48 or 0.72 is the anomaly; it can show that in 2023 they are the two ends of a single distribution that has shifted, decade over decade, toward the low end.

A population correspondent covers one country's fertility number: Seoul's record low, Rome's shortfall, Lagos's boom. Reading all 217 economies' rates in a single pull shows the shape no single-country desk sees — that the below-replacement economies quietly became the majority (117 of 217) sometime between 2013 and 2023, that the countries doing the crossing are no longer rich (India, the Philippines, Mexico, Turkiye), and that the world's fertility map has collapsed into two facts: sub-Saharan Africa, holding 46 of its 48 economies above the line, and almost everywhere else, holding below it. The story of the decade is not any one country's birth rate; it is that the exception and the rule swapped places while the counting was done one nation at a time.