At the end of 2009, foreign nationals residing in Italy there are 4 million and 235 thousand, or approximately 7% of the total population. The families in which there is at least one foreigner instead amounted to 2 million and 74 thousand (8.3%). In addition, the proportion of mixed families (made up of both Italian, both by foreigners) is 22.6% of the total of those with foreigners – an indicator of the degree of integration into the indigenous community. Families with foreigners reside mainly in the north-west (32.9%), Center (27.3%) and Northeast (24.3%) and are composed of individuals younger than households of only Italians ( the average age is 30 years against 43). In addition, although the average size of these families is not very different from that of the families of Italians (2.44 against 2.38), they are more often single people (35.5% vs. 30.9%) and families composed of five members or more (9.1% vs. 4.7%).