Basing upon the 2017 Special Eurobarometer on immigrant integration, the Working paper shows that the population of countries with a relatively high share of immigrants is more likely to consider them as a burden on the welfare system and a crime-prone community. In contrast, natives' opinions on the impact of immigration on culture and the labour market are unrelated to the presence of immigrants. Authors find that the effects of second-generation immigrants on pro-immigrant attitudes toward security and fiscal concerns are positive (as opposed to first-generation immigrants). They find no impact of the immigrants' share on the attitudes of natives supporting far-left or left political parties, while it is the most negative among respondents affiliated with far-right parties.