Countries tend to define their “immigrant population” in different ways. Most settlement countries (Australia, Canada, New Zealand), the United Kingdom and OECD Latin American countries like Mexico generally refer to the foreign-born population. Other European countries use several different concepts, which include factors like current citizenship, citizenship at birth, country of birth and self-reported ethnicity. Some EU countries exclude from their national definition of the immigrant population expatriates (nationals by birth born abroad), such as France or Italy, or foreigners born abroad who belong to the same ethnic group as the majority of the population (e.g. Hungary, Greece; partly also Germany). Other may also take into account a minimum duration of stay to be included in the immigrant population, such as countries with population registers. In Japan and Korea, statistics predominantly use the notion of nationality. Canada in general excludes persons with a temporary residence permit from the “immigrants” category.
When it comes to define children of immigrants, many longstanding immigration countries considers as children of immigrants all native-born with at least one immigrant parent, or native-born with foreign nationality. Others only consider native-born with two immigrant parents. Most countries have little information on native-born descendants of immigrants because information on parents’ origin is rarely collected. This report avoids the widely used term “second generation migrant” as this term suggests that immigrant status is perpetuated across generations. It is also factually wrong, since the persons concerned are not immigrants but native-born.
This report defines immigrants as the foreign-born population. Indeed, unlike citizenship that can change over time, the place of birth cannot. In addition, conditions for obtaining host-country citizenship vary widely, hampering international comparisons. In countries that are more liberal in this respect – e.g. OECD countries that have been settled by migration – most foreign nationals may naturalise after five years of residence. Some European countries, such as Sweden, also have relatively favourable requirements for some groups. By contrast, many native-born with immigrant parents are not citizens of their country of birth in the Baltic countries, Switzerland and Germany, for instance.
There are many reasons why the outcomes of immigrants – particularly those who arrived as adults – tend to differ from those of the native-born population. They have been raised and educated in an environment – and often in a language – that may be different from that of their host country. And some elements of their foreign origin will always be part of them. Although some of these may affect their full integration, they generally become less of a hindrance the longer migrants reside in the host country.
Issues are very different when it comes to the native-born descendants of immigrants. As they have been raised and educated in the host country, they should not be facing the same obstacles as their immigrant parents and outcomes similar to those of their peers of native-born parentage may be expected. In many respects, the outcomes of the native-born offspring of immigrants are thus a better measurement for integration than the outcomes of the foreign-born. The situation of people who are foreign-born, but arrived as children when they were still of mandatory schooling age, is also different from those who came as adults. Indeed, for the latter, certain key characteristics such as educational attainment are barely influenced by integration policy (as education has been acquired abroad), and thus should not be considered indicators of integration. In contrast, educational attainment is a key indicator for those who arrived as children or are native-born descendants of immigrants.
Figure 1.1 provides an overview of the population with a migrant background that is decomposed along the lines just mentioned – i.e., the foreign-born who arrived as adults, the foreign-born who arrived as children, and the native-born offspring of immigrants. The latter are further broken down between those native-born with two foreign-born parents and those with one foreign-born parent (that is, with “mixed background”). The report examines the latter groups in more detail in Chapter 7 on youth.
According to household survey data, almost 10% of the people residing in the OECD and 11% in the EU are foreign-born – around 125 and 55 million, respectively. Among the immigrant population, one quarter arrived before the age of 15 in the OECD, a share that is slightly higher in the EU (28%). Native-born with at least one immigrant parent account for around 7% of the total population of both the OECD and the EU – around 85 and 35 million, respectively. Across the OECD, slightly more than half of the native-born with a migrant background have two foreign-born parents. That share is somewhat smaller in the EU, where native-born with a mixed background are the majority. The vast majority of native-born with a migrant background have one native- and one foreign-born parent in new destination countries where the number of descendants of immigrants is low, as well as in Sweden and in Central and Eastern European countries where the immigrant population is relatively old of age.
Overall, 17% of the total population have a migrant background in the OECD. The figure is 18% in the European Union. Three fifths of the population with a migrant background are foreign-born. Only in France, Israel, Central Europe (except Hungary) and the Baltic countries are native-born with a migrant background outnumbering immigrants. More than 40% of the population has a migrant background in the settlement countries and in those longstanding European immigration destinations that predominantly host intra-EU migrants (Luxembourg and Switzerland). That share is above 60% in Luxembourg and Israel. It is also between 25 and 35% in most European longstanding destinations, as well as in Sweden, the Baltic countries (except Lithuania) and the United States. At the other side of the spectrum, less than 1 person out of 20 is of migrant background in most Central European countries where the migrant population has been shaped by border changes and ethnic minorities, and less than 1 in 30 in the new immigration destination countries of Asia, Latin America, and Eastern Europe.