Share of Foreign-Born Adults in Spain Varies by Region

The percentage of people aged 20 to 44 born outside Spain varies greatly by region and municipality. Without specifying the territory, the raw data lacks context.

An image circulating on X showing the share of foreign-born individuals aged 20-44 uses a misleading presentation: a map of Spain colored by province or autonomous community, with no context beyond the title. While the data is real and available from the INE's continuous register, the highlighted figure depends heavily on the chosen age bracket and geographic scope.

## What the Percentage Actually Measures

INE population statistics cross-reference age, sens, and country of origin. The 20-44 age group contains the highest concentration of foreign-born residents, as it includes those who arrived as children or during working age. Nationally, this group represents about **20%** of residents in that age bracket, with vast disparities between provinces: some exceed **30%**, while others fall below **10%**.

## How Age Affects the Result

If one looks at the total population instead of just ages 20-44, the share of foreign-born individuals drops to around **15%**. This difference isn't an error; foreign-born people are concentrated among younger adults, whereas most residents over 65 were born in Spain. Choosing the 20-44 range is valid but inflates the figure compared to the national average.

## Origin Matters as Much as the Number

This percentage encompasses diverse realities: Spanish nationals born abroad, EU citizens, Latin Americans, and Africans. The INE distinguishes between place of birth and current nationality, which do not always align. A **30%** rate of foreign-born residents in a province may include many returning Spaniards or children of emigrants.

## How to Interpret the Map Correctly

The data illustrates the territorial distribution of the foreign-origin population, not conclusions about integration or pressure on public services. That would require income, employment, and housing figures per municipality. The map is a starting point, not a final verdict.