VILARDEVÓS, Spain — Nestled in the scrubby hills of northern Spain, this small village feels like a place that has fallen out of time. In reality, it offers a glimpse of the demographic future.
When Yaiza Ferreiro Collazos begins her English lesson on a June morning, eight children are sitting in front of her. The oldest are in sixth grade, the final year of primary school; the youngest are in fourth.
Teaching them together is not always easy, the 30-year-old says. But there are too few pupils to separate them.
The Rodolfo Núñez Rodríguez nursery and primary school opened in 1974 and was built for 700 children from Vilardevós and the surrounding villages. Today, it has 31 pupils, from preschool through sixth grade.
Apart from the school bell, the building is eerily quiet, even during breaks. The silence extends into the village. Most people encountered in its lanes are old. Many houses are abandoned, their façades marked with signs reading Se vende — for sale.
Vilardevós is an extreme case, but not an isolated one. Across Europe, birth rates are falling, populations are aging and fewer young people are entering the workforce.
Modern welfare states rest on an intergenerational bargain. Today’s workers finance pensions and health care for older people, trusting that others will eventually do the same for them.
Low fertility is straining that bargain. Fewer young people are entering the workforce just as large generations approach retirement. Pension reform has already become one of Europe’s most politically difficult issues, and the viability of the Social Security system is a perennial concern in the United States. Those political pressures will continue to intensify as the population ages.
That has forced governments to confront an increasingly urgent question: Can they persuade people to have more children — and, if not, can immigration prevent the demographic arithmetic from breaking down?
Why birth rates are falling
For a population to remain stable over time without immigration, women must have an average of about 2.1 children. According to the latest Eurostat data, the European Union’s fertility rate — the average number of children a woman is expected to have over her lifetime — fell to 1.34 in 2024. In Spain, the lowest among the continent’s large countries, it was 1.1 and still declining.
The United States is only slightly less exposed. Its fertility rate, long higher than Europe’s, has also dropped well below replacement level. According to the Centers for Disease Control and Prevention, it fell to 1.6 in 2024.
For a long time, falling birth rates were not treated as an urgent problem. After all, their effects take decades to emerge: A decline in births does not become a shortage of workers until roughly a generation later. By the time schools empty and pension systems come under strain, the demographic trajectory is set.
Europe and the United States also appeared less exposed than parts of East Asia. Taiwan, Hong Kong and Singapore are already grappling with fertility rates below one child per woman.
Then there is the harder question: Why is this happening?
There are many competing explanations. Karen Benjamin Guzzo, a sociologist at the University of North Carolina, has argued that part of the fall in the U.S. reflects a public-health success: Americans have become better able to avoid teenage pregnancies and unintended births. But beyond that, the story is similar on both sides of the Atlantic.
Housing is too expensive. Women are prioritizing their careers. Men are taking longer to mature. Religion has lost influence. Smartphones and social media are weakening real-world relationships. Fear of climate change makes having children feel useless and cruel.
Each hypothesis has its adherents, along with its own books, podcasts and preferred evidence. None, on its own, fully explains the decline.
Berkay Ozcan, professor of social and public policy at the London School of Economics, has little patience for attempts to identify a single culprit. The decline, says the 47-year-old father of two, is driven by a combination of causes. Insecure labor markets and high housing costs play a role, as do changing values, longer periods of education and rising expectations of parenthood.
But all these factors have a common effect: postponement. Surveys show that young people still want, on average, about two children. But many delay parenthood until they feel professionally, financially and emotionally ready, Ozcan says — and often wait longer than they intended.
Eva Beaujouan agrees, and she speaks from more than just professional experience. When the University of Vienna demographer was 34, she and her partner started trying to have a child. They finally managed five years later, after using IVF.
“I would never have imagined, starting at 34, that I would have issues,” says Beaujouan, who is now 48 and has focused her research on late parenthood.
Delayed parenthood extends well beyond affluent urban professionals. “Postponement is now observed in all social strata,” she says.
Assisted reproduction can create false reassurance. It may improve the chances of conception, but it cannot guarantee a child or fully overcome the effects of age. “It is invasive,” she says. “It is expensive. It creates inequalities. Not many people can afford it. And of course, it often fails.”
The cost of children
The fertility problem reflects a basic economic contradiction: Children are essential to the welfare state, but economically disadvantageous to the households that raise them.
In the past, children contributed labor and provided security in old age. In modern welfare states, that role has largely disappeared. “Although having children is necessary for the functioning of the welfare system, they do not have an economic function within the household,” says Beaujouan.
For all the meaning and fulfillment they may bring, raising children is expensive, can interrupt careers and may reduce lifetime earnings. Bringing up a child costs roughly $320,000 for a middle-class family in the United States, according to inflation-adjusted estimates based on U.S. Department of Agriculture data. In Britain, the Child Poverty Action Group, an anti-poverty charity, estimates the cost at about £250,000. For a household solely concerned with financial security in retirement, that money may offer a greater economic return if it is saved and invested instead.
What may be rational for individual households, however, can be damaging when repeated across an entire society.
Martin Bujard, research director at Germany’s Federal Institute for Population Research, explains the problem from an office in Wiesbaden crowded with stacks of paper. Before the conversation can begin, the 50-year-old sociologist and father of two has to clear a space for our two cups of coffee.
For an industrial country, Bujard says, quality of life does not depend primarily on the number of inhabitants. The crucial factor is how many people are entering the labor market relative to those retiring.
“If that is roughly in balance, the economy and welfare systems work,” Bujard says. “If only a few young people come up behind while very many retire, things become tricky.”
Searching for solutions
Back in Vilardevós, Yaiza Ferreiro Collazos remains in the classroom after the lesson and talks about her own plans. The 30-year-old is childless, like all her female friends.
“We work, and afterward we want fun or time for ourselves,” she says.
Collazos and her friends sometimes discuss having families, but she worries about what motherhood would require her to give up. “If I had a child, I could no longer continue my current life,” she says. She also worries about how pregnancy would change her body.
Governments across Europe have spent years trying to make such decisions easier. So far, none has found a reliable way to reverse falling fertility.
Two decades ago, Germany launched a major expansion of childcare for children under three. The reform was aimed primarily at closing the gap between the former West and East Germany. During the years that followed, fertility rose from around 1.4 to around 1.6 children per woman. But then the gains petered out — and the rate fell again. By 2025, it had reached a new historic low of 1.32.
Hungary relied more heavily on financial incentives. Former Prime Minister Viktor Orbán’s government — proudly “illiberal” by its own description — offered parents bonuses and fiscal advantages, including an income-tax exemption for mothers with four or more children. Fertility rose from about 1.25 in the early 2010s to around 1.6 in 2021, before falling back to roughly 1.4.
Attempts at persuasion have fared no better. In 2016, Italy introduced a “Fertility Day” campaign. One advertisement showed a young woman holding an hourglass beside the slogan: “Beauty has no age. Fertility does.” The campaign provoked widespread outrage.
“It is very difficult to develop such campaigns,” says Beaujouan. “If you tell women at a later stage that if they do not start having children before such an age they will have trouble, then they start feeling guilty and anxious.”
Her assessment of the policy record is harsh. “I have not seen anything yet that would increase fertility rates,” she says. “Some policies can lay reasonable conditions for having children. And if they were not here, fertility may be even lower in some places. But they are rarely a motor of fertility rates.”
The immigration alternative
There is one response that has changed the demographic numbers where family policies and tax incentives have not: immigration. Spain offers perhaps the clearest example.
By the logic of its birth rate, the country should be shrinking. Instead, its population has grown from 46.5 million a decade ago to almost 50 million today. Foreign-born workers accounted for more than 70 percent of Spain’s employment growth between 2019 and 2024, according to an analysis by Esade, a prominent Spanish business school.
The country’s immigration policy is, however, hardly a template for the rest of Europe. Much of its recent immigration has come from Latin America, especially Colombia and Venezuela — countries where Spanish is the mother tongue and Christianity is the dominant religion. That does not make integration automatic. But it makes things easier.
In much of the rest of Europe, immigrants have been harder to absorb: Newcomers often arrive without the language, credentials or cultural familiarity that make it easier to find work and settle quickly. Migrants from Muslim-majority societies have also faced greater political and public pushback than Spain’s Latin America newcomers.
That may help explain why Prime Minister Pedro Sánchez has been more willing than most European leaders to embrace large-scale immigration. Spain, he argues, needs younger workers to keep its economy growing and its welfare state afloat. His government recently launched one of Europe’s largest regularization programs for undocumented migrants. By early July, 1.2 million people had already applied.
But immigration solves one demographic problem by creating a different political challenge. Sánchez’s critics argue that the government counts the economic benefits while underestimating the pressure on housing, schools and public services, as well as the difficulties of integration and social cohesion.
Spain’s conservative opposition and the far-right Vox party accuse Sánchez of rewarding illegal immigration. Vox leader Santiago Abascal has claimed that the government is creating a “pull effect” and accelerating what he calls an “invasion.”
The recent crisis in Ceuta, a Spanish exclave on Morocco’s northern coast, demonstrated just how politically explosive immigration has become in Europe. In late July, tens of thousands of migrants, almost all of them young men, crossed into the territory, overwhelming local authorities. Some factors remain disputed, including the role of the Moroccan government, but the political backlash was immediate: Twenty-two of the EU’s 27 leaders signed a letter warning that Madrid’s generous policies risked creating a “pull factor” for irregular migration and placing pressure on other member states.
This criticism is backed by a public increasingly skeptical of large-scale immigration. Recent polling by YouGov, a London-based opinion research firm, found that majorities in Britain, France, Germany, Italy, Sweden and Denmark said immigration over the past decade had been too high. In the United States, about half the population supports deporting immigrants back to their countries of origin.
The controversy will not be resolved anytime soon. Just as the consequences of collapsing birth rates take decades to become fully visible, the long-term effects of large-scale immigration unfold slowly.
Renewal and resistance
Luton, 1,350 kilometers north of Vilardevós and half an hour by train from London, offers a contrasting picture of Europe’s demographic future. The English city has just under a quarter of a million inhabitants. In 2024, its fertility rate was 2.0, the highest in the country. The national figure was about 1.4.
Data provided by the city administration points to one important difference: Women in Luton tend to have children earlier. One in three births is to a woman aged 25 to 29, compared with one in four across England. Births to women aged 35 to 39, by contrast, account for a larger share nationally than they do in Luton.
Immigration is central to that pattern. Two-thirds of babies born in Luton in 2025 had a mother who was born abroad, according to figures provided to POLITICO by the local council. Across England, the share was about one-third.
Tahmina Saleem, the Labour politician who chairs the town council, describes Luton as “super-diverse and proud of it.” Born in Sheffield to parents from Punjab, she argues that the city attracts families because it still offers jobs, including through its international airport, while housing remains cheaper than in London. Behind her, on the wall, hangs a portrait of King Charles III in a scarlet parade uniform.
The diversity is most visible in the neighborhood of Bury Park, where many newer families have settled. Shops, travel agencies and religious institutions reflect the area’s large Muslim population and its links to South Asia and elsewhere. Women in headscarves and hijabs are a common sight. Travel agencies advertise the Hajj and Umrah, the major and minor pilgrimages to Mecca, and grocery stores sell halal products.
Luton is also illustrative of the political backlash that large-scale immigration can engender.
While Saleem sees immigration as having made the city younger and more open, others see Luton as a symbol of a country becoming demographically and culturally unrecognizable.
The far-right English Defence League emerged in the city in 2009, drawing heavily from the football-hooligan milieu and organizing against immigration and Islam. Its best-known leader, Stephen Yaxley-Lennon, better known as Tommy Robinson, is also from Luton. Robinson has built his political identity on the same themes.
His influence now extends far beyond his hometown. In May 2026, Robinson drew roughly 60,000 supporters to a “unite the kingdom” rally in London, evidence that the grievances first mobilized in places such as Luton have become a national political force. The previous September, an even larger rally drew an estimated 110,000 people and featured a video link with Elon Musk, the tech billionaire who has repeatedly amplified Robinson’s agenda on his social media platform X.
“Tommy comes by now and then with cameras and foreign journalists to provoke us,” says Hamza Parker, a volunteer at Discover Islam Public Information Centre, a nonprofit organization in central Luton. “But he does not succeed.”
Limits of policy
Back in Vilardevós, Mayor Tamara Balboa García studies the population pyramid of her municipality. Of its 1,598 inhabitants, just 66 are 14 or younger. More than 960 are 60 or older. For every child or teenager, there are almost 15 senior citizens.
If the trend continues, García says, the village will eventually cease to have a future. But she insists that decline is not inevitable. The municipality helps returnees and newcomers find housing and work, particularly in agriculture, wine production and elder care. And even though the municipality is shrinking, it still has a supermarket, a pharmacy, a football pitch, an outdoor swimming pool, several bars, a bank branch and, of course, the school with its tiny classes.
A local nonprofit, Portas Abertas (“Open Doors”), plays a central role in the effort to keep the city alive. Andrea Rodríguez, the social educator who runs its local office, describes how the organization helped one immigrant family settle in the village: The mother, a trained nurse, found work quickly; the father was placed first as a truck driver and later as a baker; their child joined an after-school program.
Rodríguez’s own life is an example of what Portas Abertas wants to achieve. She left Vilardevós as a young woman for her training, but later returned. Four years ago, she bought a house for €92,000.
When the reporter looks at her incredulously, Rodríguez laughs. “It was even in good condition!”
Unlike the mayor, the schoolteacher and many other women in the village, Rodríguez has a child: a four-year-old daughter.
Before the reporter can ask whether she plans to have another child, Rodríguez answers.
“One child is enough.”