Immigrants communities from Italian society

International migration is one of the characteristic phenomena of the contemporary world. Several countries in Western Europe, like Germany, France, England, Spain, Italy and others, were experienced in the last two decades, successive waves of immigrants, whom social and cultural integration difficulties raised many communities human adoption. For example, more than 7.5% of Italy's current population (60.6 million people) is represented by foreigners, who are concentrated in metropolitan areas in the North and Center of the country. This study, conducted from a sociological perspective gives us significant information on the characteristics of current Italian society, the distribution by region of the Italian population living in this country, the reasons for the presence of immigrants in Italy, the geographical area and country origin of the foreign citizens, their age group and sex, the dynamics of migration flows, etc. The largest foreign community in Italy is made up of Romanian, Albanian and Moroccan. The main objective pursued in our research was to see a picture of the immigrant population in Italy and to know its structure based on relevant indicators. The underlying assumption, from which we started, is that the process of immigration is, in social terms, one of the most important processes that define the Italian society at present, a society undergoing a difficult period, because of the consequences of financial crisis. Our conclusions are based on quantitative analysis of data collected by statistical method. Other interpretations are based on appeal to the historical method and the comparative method.