Median Age of Immigrants
How old is the typical foreign-born resident in America?
Differences in the median ages of foreign-born and native-born residents can largely be attributed to children—or rather, to the lack thereof among the foreign-born population. This is not due to a lack of children among immigrant families; rather, most children of immigrants were born in the United States, and are therefore excluded from the population of foreign-born, skewing it older.
Children are also less likely to have moved homes in their lifetime than adults, which helps explain the median age difference between people born in their state of residence compared to people born in other states.