Demographics · Issue 02
Almost half of Korea lives in Seoul
WUP 2025 Seoul 22.5 million. WPP 2024 Korea about 51.7 million. That is 43% of a country in one capital. Delhi is 2% of India. The capital is not the country. Except when it is.
- 01Seoul / Korea22.5m of 51.7m43.5
- 02Tokyo / Japan33.4m of 123.1m27.1
- 03Cairo / Egypt25.0m of 116.5m21.5
- 04Manila / Philippines24.7m of 115.8m21.3
- 05Dhaka / Bangladesh36.6m of 173.6m21.1
- 06London / UK10.4m of 69.1m15.1
- 07Jakarta / Indonesia41.9m of 283.5m14.8
- 08Delhi / India30.2m of 1,464m2.10
- Seoul metro / Korea, 2025
- 43%
- Tokyo / Japan
- 27%
- Dhaka / Bangladesh; Cairo / Egypt; Manila / Philippines
- 21%
- Delhi / India
- 2%
A country can be a city
Forty-three percent of Koreans live in the Seoul urban fabric. Twenty-seven percent of Japanese live in Tokyo’s. A fifth of Egyptians, Filipinos and Bangladeshis live in Cairo, Manila and Dhaka. Delhi, 30 million people, is 2% of India. The same word — capital — hides two species. One is a primate city that is the labour market, the university, the airport and the marriage market. The other is a large city in a continental country. Population change ‘from countries’ capital’ is the first species: when Seoul’s TFR sits at 0.6-range, it is not a district statistic. It is the country’s.
Jakarta is large. Indonesia is larger.
41.9 million people and only 15% of Indonesia. That is why Nusantara can be announced without moving the chart, and why Jakarta can sink without Indonesia shrinking. Pair this with Jakarta was thirtieth and Korea still the lowest-fertility civilisation. A primate capital in a low-fertility country is a housing, care and automation story. A primate capital in a young country is a water, jobs and flood story.
The long view is two books
Own the urban stack in Dhaka, Cairo, Manila, Jakarta — young primate cities. Own automation and later-life care in Seoul and Tokyo — old primate cities. Do not own a single ‘emerging-market capital’ ETF that mixes 43% of Korea with 2% of India.
Investing lens
Horizon 10–25 years · Educational, not advice
Primate capitals are national labour markets. Young ones need water and housing. Old ones need robots and care. Delhi is not Seoul.
Where the map points
- Urban water, housing and transit in Dhaka, Cairo, Manila, Jakarta
- Automation and later-life care in Seoul and Tokyo
- Indian domestic compounders — the country is not the capital
- Avoid a blended ‘EM capitals’ product
What can break it
- A metro definition that is not a tax base
- Fertility or migration that re-steepens a primate pyramid
- A new-capital project (Nusantara) that is a headline, not a move
CHART does not recommend securities, funds or trades. Figures can be revised by their publishers. Do your own research and consider regulated advice before allocating capital.
Sources
Every headline number traces to a named publisher. Contextual sources inform the essay, not the key stat.
- 01PrimaryUnited Nations Population Division2025World Urbanization Prospects 2025 — Summary of Results
More than half the world lives in urban areas, up from about one-third in 1950, toward about two-thirds by 2050. 2025 Degree of Urbanisation: Jakarta ~42 million (1st), Dhaka ~37 million, Tokyo 33 million. Previous vintage had Jakarta ~12 million (30th).
- 02CorroboratedGerman Federal Statistical Office (Destatis)2025The largest cities worldwide 2025
WUP 2025: Jakarta 41.9 million, Dhaka 36.6, Tokyo 33.4. Worldometer UN 2025 column matches and adds 2030/2050 paths used in Dhaka will be first.
- 03CorroboratedUnited Nations Regional Information Centre2026-07-02World's Largest Cities: How Megacities Will Change by 2050
WUP 2025 wrap: Tokyo largest in 2000, overtaken by Jakarta and Dhaka. 2050: Dhaka and Jakarta each >50 million. Tokyo ~31 million, seventh. London 10.4 million (33rd). Istanbul 15 million, Moscow 14.5 million.
- 04PrimaryUnited Nations Population Division2024-07World Population Prospects 2024
Peak ~10.3 billion in the mid-2080s. Global TFR 2.25; China 1.01; more than half of countries below replacement.
Keep reading
Jakarta was thirtieth. Then they counted the city.
UN World Urbanization Prospects 2025, new Degree of Urbanisation: Jakarta 41.9 million, the world’s largest city. The previous vintage had it at about 12 million and 30th. Dhaka 36.6. Tokyo 33.4, no longer first. Nine of the ten largest cities are in Asia. Seven of them are capitals.
41.9m
Jakarta, 2025 (WUP 2025)
Dhaka will be first. Tokyo will be seventh.
WUP 2025: Dhaka 36.6 million in 2025, about 52 million in 2050. Jakarta 41.9 then about 52. Tokyo 33.4, then about 31, and seventh. Four capitals, twenty-five years, one inversion.
~52m
Dhaka, 2050 path (WUP 2025)
A civilisation at 0.75 children
Statistics Korea: the total fertility rate was 0.75 in 2024 and 0.80 in the 2025 preliminary. Replacement is 2.1. Seoul has been lower still. This is not a baby-bust. It is a new steady state until something enormous moves.
0.75
Korea TFR, 2024
India is now the most populous country on Earth
UN World Population Prospects 2024: India passed China in 2023 and will not give the title back. By 2025 India has about 1.46 billion people, China about 1.42 billion and falling. A century’s ranking, inverted in a year.
1.46bn
India population, 2025 (UN)
The city already won
UN: more than half of humanity lives in urban areas. In 1950 it was about a third. By 2050 it will be about two-thirds. The century’s demand is a skyline: housing, wires, water, heat, and a bus.
~58%
World urban share, mid-2020s (UN)