Spain's Demographics Shift: One in Three Minors Has Foreign Origin

Foreign Origins: One Third of Under-20s in Spain

The latest issue of Panorama Social, published by Funcas, has highlighted a figure that should trigger alarm bells: in 2024, 36% of Spaniards under 20 and 39% of children under five have foreign origins (born abroad or with at least one immigrant parent). This is not a temporary spike; the trend has been building for decades and is accelerating.

Figures Behind the Demographic Change

Available data reveals a profound transformation. The fertility rate hovers around 0.77, far below replacement levels. In 1998, there were 11,686 births to mixed couples; by 2018, this rose to 41,751. Meanwhile, net migration continues: between 2021 and 2024, an estimated 2.07 million people entered officially, plus some 700,000 in irregular status, according to analyst estimates. Consequently, the population of foreign origin may already account for roughly 30% of the total, including naturalized citizens.

A Debate Split Between Two Interpretations

Views on this scenario are polarized. One school argues that Spain is experiencing silent population replacement, driven by low native birth rates and constant immigration. At the extreme, some describe the process as an orchestrated "invasion." A more restrained perspective notes that the phenomenon results from labor needs and aging, emphasizing that integrating the second generation is key to preventing social fracture. There is no consensus on exact figures or solutions.

Temporal Evolution: Recent Milestones

• 1998: 11,686 births to mixed couples.
• 2018: Mixed-couple births surge to 41,751, nearly four times higher.
• 2024: Funcas reveals that 39% of children under five have foreign origins.

The Core Issue: A Country Not Replacing Itself

Spanish demographics have been in deficit for decades. With a fertility rate of 0.77, similar to war-torn Ukraine, the native population is not reproducing. The welfare state, economic hardships, and cultural shifts are cited as causes. Some argue that without immigration, the country would empty out; others contend that mass immigration is not a solution but a patch creating new problems. What is clear is that Spain’s demographic picture in twenty years will be radically different from today’s.

The debate remains open. As data evolves, positions harden. No one disputes that Spain in 2040 will bear little resemblance to Spain in 1990.