India's half billion Gen-Z population will inherit a still-young country

More than 500 million Indians belong to Generation Z, the largest such cohort anywhere. By 2050, they will run the country at their economic peak.

India is home to the world's largest Gen-Z population. More than 500 million Indians, about 35 per cent of the country, are aged 10–29, the band that maps onto the generation born between 1997 and 2012, according to World Bank projections based on the United Nations' 2024 population estimates. That single cohort is nearly as large as the combined populations of the United States, Britain, and Japan.

What that generation inherits is the real story, and it splits sharply by country. By 2050, Gen-Z will be roughly 38–53 years old, the prime earning and leadership years. Consequently, two-thirds of Indians will still be of working age in 2050. For China and Japan, two in five people will be over 60. The same generation is set to inherit very different futures in different countries.

THE CRUCIAL CATEGORY

No country has more young people. India's roughly 506 million aged 10–29 dwarf China's 336 million and outnumber the entire population of the United States. This is the cohort that will move through India's workforce, housing market and politics for the next three decades.

As Gen-Z ages into its late 30s, 40s, and early 50s, India's median age will rise from about 29 today to 39 in 2050, according to the projections. Yet the working-age share holds at about 68 per cent, because the generations behind Gen-Z are still sizeable. India will age without emptying.

In China, the working-age share will fall from 69 to 59 per cent by 2050, according to the projections, and the median age will climb to 53. Two in five Chinese will be over 60. Japan is further along still, with 43 per cent above 60 and a shrinking population. Nigeria will run the opposite way: a median age of just 24 in 2050 and a base still broad and young — the youth boom India had a generation ago.

Behind every one of those pyramids is the same force: fertility has collapsed almost everywhere. India's total fertility rate has fallen from 5.7 births per woman in 1950 to about 1.9 (1.94 in 2025), below the level of about 2.1 needed to replace a generation, according to UN data. China has dropped to 1.0, the lowest in the group; only Nigeria, at 4.3 in 2025, still sits well above replacement.

TWO INDIAS

A young population is a promise, not a payout. India's demographic edge pays off only if those 500 million find work that lifts productivity, and whether the economy can generate enough good jobs fast enough is the central question hanging over the dividend. The advantage is also unevenly spread. A single national pyramid hides two Indias, ageing at different speeds.

The southern states, which fell below replacement fertility decades ago, are already ageing: more than one in five Keralites (20.7 per cent) were 60 or older by 2023–24. This is a share India as a whole will not reach until 2050, according to NFHS-6.

The big northern states are still young. Children under 15 make up 35.6 per cent of Bihar, against just 20.3 per cent of Kerala. So, Gen-Z inherits two different countries inside one. A worker in Kerala or Tamil Nadu already lives in the older India of 2050, while one in Bihar enters a labour market still crowded with peers.

India's Gen Z also carries the imprint of decades of son preference: more boys than girls at the base, a sex ratio still tilted toward men, even as it slowly narrows, according to official birth data. That surplus of young men carries social consequences of its own.

THE STAKES

The next two decades will decide which version of 2050 India gets. If Gen-Z is matched with jobs, skills and rising output, India grows wealthy while it is still young, the dividend China spent to become a middle-income power. If it is not, India reaches an older age structure with incomes still modest, and the bill for pensions and elder care arrives before the wealth does.

China and Japan, ageing fast and rich, are the warning; Nigeria, young and poor, is the other risk. India sits between them, with the narrowest and widest window of all.

The half-billion young Indians scrolling through 2026 will, on these projections, be the people running the country in 2050; its CEOs, its ministers, its grandparents. The pyramid that holds them is already changing shape beneath them. What they inherit is being decided now.

- Ends