The line, and the fifty-three past it
In 2024, 15.36% of the people living in Thailand were aged 65 or over and 14.75% were under 15. It is the first year in the series, which runs from 1960, in which the older band is the larger one. In 2023 the two shares were 14.72% and 15.09%, the other way round.
Thailand is not alone, and it is not the story on its own. Of the 217 economies for which the World Bank reports both bands, 53 are past that line. 45 of the 53 are high income. Eight are upper-middle income. Not one lower-middle or low income economy is among them.
Five economies crossed in 2024: Albania, Aruba, Macao, Thailand and the United States. The American shares were 17.93% and 17.32%, and in 2023 they were 17.43% and 17.60%. Income per head that year was 82,910 dollars in the United States and 7,130 in Thailand, a ratio of 11.6. The same line, the same year, and one economy earning eleven and a half times what the other does per person.
| Country | Under 15 | 65 and over | Income per head | Net migration per 1,000 |
|---|---|---|---|---|
| Ukraine | 13.89% | 18.96% | $5,230 | +30.3 † |
| Thailand | 14.75% | 15.36% | $7,130 | +0.3 |
| North Macedonia | 16.82% | 18.02% | $8,300 | -3.1 |
| Belarus | 16.30% | 17.67% | $8,380 | -0.3 |
| Bosnia and Herzegovina | 13.04% | 22.23% | $8,810 | -1.4 |
| Albania | 16.84% | 16.92% | $9,910 | -10.3 |
| Serbia | 14.31% | 22.69% | $11,610 | -1.2 |
| Cuba | 15.29% | 16.57% | not reported | -2.0 |
Thailand did not lose its young
The eight middle-income countries past the line have an obvious family resemblance and Thailand is not part of it. Six of the eight are in Europe and Central Asia, all of them post-communist economies: Ukraine, North Macedonia, Belarus, Bosnia and Herzegovina, Albania and Serbia. The seventh is Cuba. Thailand is the eighth, and the only one in East Asia and the Pacific.
The migration column is where they separate. Six of the eight lost people on net in 2024: Albania at 10.3 per thousand, North Macedonia 3.1, Cuba 2.0, Bosnia and Herzegovina 1.4, Serbia 1.2, Belarus 0.3. Ukraine’s figure is a large positive, 30.3 per thousand, and it is wartime return movement rather than a market attracting people; it is printed and labelled here rather than averaged into anything.
Thailand’s net migration in 2024 was positive, at 0.3 per thousand. Of the eight, it is the only country whose crossing cannot be read as its young people leaving. Something narrowed the base, and departure is not it. The desk stops there, because the indicator stops there.
- BOTH FIGURES ARE SHARES OF THE WHOLE POPULATION, not of the labour force and not of anything else. "Under 15" is everyone from birth to their fifteenth birthday; "65 and over" is everyone from their sixty-fifth. Because both are shares of the same denominator, comparing the two shares is the same as comparing the two head counts.
- THE CROSSING IS NOT AGEING. A country crosses when its base narrows below its top, and a country can do that while being young by every other measure. Thailand’s 65-and-over share is 15.36%. The United States’ is 17.93% and Japan’s is 29.78%. Thailand is past the line and is not the older country.
- SIXTY-FIVE IS A BAND BOUNDARY, NOT A RETIREMENT AGE. Nothing here says who has stopped working. Statutory retirement ages differ between all 53 of these countries, and in many of them a large share of people over 65 are in work.
- AND UNDER-15s ARE NOT A FORECAST OF WORKERS. They are the people who could enter a labour market over the next fifteen to twenty-five years if they stay, if they look for work, and if they are counted where they were born. Migration alone can change all three, which is why this piece prints the migration column beside the age columns rather than reasoning from age alone.
So "Thailand has more over-65s than children" means that in 2024 more Thai residents were 65 or older than were under 15. It does not mean Thailand is an old country, that its workers are leaving, or that anything follows about its labour force in any given year.
Everything above rests on a comparison between two age bands of the same population. It is set out here in full, because the reading it invites is not the reading the data supports.
Thailand is not old. It has peaked.
The tempting sentence is that Thailand has grown old, and the data refuses it. Its 65-and-over share, 15.36%, is lower than the United States’ 17.93%, lower than the United Kingdom’s 19.50%, and a little over half of Japan’s 29.78%. On that measure Thailand is a young country that happens to be past the line.
What Thailand has instead is the widest middle. 69.89% of its people were of working age in 2024. That is the fifth highest share among the 53 countries past the line, behind only Singapore at 74.66%, Andorra at 72.17%, Macao at 71.82% and Korea at 70.16%, and it is the highest of the eight that are not high income. Thailand’s working-age population, relative to everyone else, has never been larger.
The two facts are the same fact seen from either end. A country reaches its widest working-age share at the moment its base has already narrowed, because the narrowing is what stopped diluting it. Japan crossed the line in 1997; its working-age share is now 58.78%, the second lowest of the 53, behind only Monaco. The crossing does not date the problem. It dates the peak.
Where the next workers are
At the other end of the same indicator the gaps are enormous and none of them is European. Nigeria has 41.01% of its people under 15 against 3.05% at 65 or over, a gap of 37.96 points. Pakistan is 32.40 points, Egypt 26.87, the Philippines 22.38, India 17.47, Indonesia 17.31.
Vietnam is the interesting one of the seven: 23.22% under 15 against 9.05% over 65, a gap of 14.17 points, the narrowest here and closing faster than any of the others. China has not crossed and is close: 16.01% against 14.67%, 1.34 points apart.
Three economies are within a fifth of a point of the line and have not crossed it: Gibraltar at 0.03 points, Russia at 0.10 and Australia at 0.11. On this dataset they are next, and the desk will report it when the next vintage says so rather than predicting it now.
| Country | Under 15 | 65 and over | Gap, in points |
|---|---|---|---|
| Nigeria | 41.01% | 3.05% | 37.96 |
| Pakistan | 36.68% | 4.28% | 32.40 |
| Egypt | 31.99% | 5.12% | 26.87 |
| Philippines | 27.87% | 5.49% | 22.38 |
| India | 24.62% | 7.15% | 17.47 |
| Indonesia | 24.60% | 7.29% | 17.31 |
| Vietnam | 23.22% | 9.05% | 14.17 |
What this piece will not tell you
It does not say Thailand is older than the United States, because it is not: the American 65-and-over share is 2.57 points higher. The crossing compares a country with itself, not with anyone else, and two countries can be on the same side of it while being very differently aged.
It names no cause. An age share is a structure at a date. Fertility, mortality, migration and the size of the cohorts born fifty years ago all sit inside these two numbers and the indicator separates none of them. The migration column narrows what the crossing can mean; it does not explain it.
And it is not a forecast, of a labour force or of anything else. Under-15s become workers only if they stay, look for work, and are counted where they now live. These are also modelled estimates rather than a 2024 census in 217 countries, they carry one vintage stamp, and the next vintage will revise some of them.
What the data establishes
- In 2024, 15.36% of people in Thailand were aged 65 or over and 14.75% were under 15: the first year in the 1960 to 2024 series in which the older band is the larger.
- Fifty-three of the 217 economies with data are past that line. Forty-five are high income, eight are upper-middle income, and none is lower-middle or low income.
- Five economies crossed in 2024: Albania, Aruba, Macao, Thailand and the United States. Income per head that year was 7,130 dollars in Thailand and 82,910 in the United States, a ratio of 11.6.
- Six of the eight middle-income countries past the line lost people on net in 2024, from 0.3 per thousand in Belarus to 10.3 in Albania. Thailand’s net migration was positive, at 0.3 per thousand.
- Thailand’s working-age share, 69.89%, is the fifth highest of the 53 countries past the line and the highest of the eight that are not high income, while its 65-and-over share, 15.36%, is below the United States’ 17.93%.
What it does not
- That Thailand is an older country than the United States. Its 65-and-over share is 2.57 points lower. The crossing compares a country with its own base, not with another country.
- Any cause, for any crossing here. Fertility, mortality, the size of the cohorts born fifty years ago and migration all sit inside these two shares, and the indicator separates none of them.
- Anything about who is working. Sixty-five is a band boundary, not a retirement age, and this piece uses no labour force, employment or participation figure at all.
- A forecast of any labour force. Children under 15 enter a labour market only if they stay, look for work and are counted where they live now, and this piece prints the migration column precisely because age alone cannot carry that.
- That the next crossing is Australia’s. Gibraltar is 0.03 points from the line and Russia 0.10, against Australia’s 0.11, and on one vintage of modelled estimates the order of three figures that close is not a finding.
Method
- ONE SOURCE, ONE VINTAGE. Every figure is a 2024 value from World Bank Open Data, read on 6 September 2026 through the public API, which needs no key. The indicators are SP.POP.0014.TO.ZS (population ages 0 to 14, per cent of total), SP.POP.65UP.TO.ZS (65 and above, per cent of total), SP.POP.1564.TO.ZS (15 to 64, per cent of total), NY.GNP.PCAP.CD (GNI per capita, Atlas method, current US dollars), SM.POP.NETM (net migration) and SP.POP.TOTL (total population). The dataset carries the stamp 13 July 2026.
- THESE ARE MODELLED ESTIMATES, not census counts. The age structures rest on the United Nations population estimates the World Bank republishes; no country ran a census in 2024 to produce them.
- AGGREGATES ARE EXCLUDED. The World Bank’s indicator responses mix countries with regional and income-group aggregates. Every figure and every count here is filtered against the Bank’s own country list, which is why the universe is 217 economies and not the 264 rows the API returns.
- THE CROSSING YEAR is the first year in which the 65-and-over share exceeds the under-15 share and never falls back within the series, computed on the full 1960 to 2024 run for each of the 53. Reading a single year would call a country a crosser on one wobble.
- INCOME IS GNI PER HEAD, Atlas method, current US dollars, 2024. It is not GDP and it is not adjusted for purchasing power, so it understates what an income buys in Thailand relative to the United States. Cuba does not report it and the cell says so. The ratio 82,910 divided by 7,130 is 11.63 and is printed as 11.6.
- NET MIGRATION is the World Bank’s estimate of arrivals minus departures for the year, divided here by the same year’s total population and multiplied by 1,000. Ukraine’s is dominated by wartime return movement, is not comparable with the others, and is labelled in the exhibit and in the prose. The desk uses the column to rule an explanation out, never to rule one in.
- A FIRST DRAFT OF THIS PIECE WAS WRONG THREE TIMES and the errors are printed rather than quietly fixed. Working from a 33-country sample it said a dozen countries had crossed (53 have), that Thailand was the poorest to cross (Ukraine, at 5,230 dollars, is poorer) and that Australia was next (Gibraltar and Russia are closer). Fetching all 217 economies is what corrected them.
Primary sources
- World Bank Open DataPopulation ages 0-14 and ages 65 and above, per cent of total populationSP.POP.0014.TO.ZS · SP.POP.65UP.TO.ZS · 2024 · dataset stamp 2026-07-13 · September 6, 2026
- World Bank Open DataPopulation ages 15-64, per cent of total populationSP.POP.1564.TO.ZS · 2024 · September 6, 2026
- World Bank Open DataGNI per capita, Atlas method, current US dollarsNY.GNP.PCAP.CD · 2024 · September 6, 2026
- World Bank Open DataNet migration, and total population, used together for the per-1,000 rateSM.POP.NETM · SP.POP.TOTL · 2024 · September 6, 2026
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