Most Scottish families are small, with one or two children. About 20% of families are headed by a single parent, usually the mother. There are also many blended families or stepfamilies, and it has been projected that by 2010, this will be the most common type of family in Scotland. Many couples choose to live in common-law unions rather than marry; 40% of all children born in Scotland are born to parents who are not married.
Immigration has made Scotland a multicultural society. Most immigrants live in the cities. East Asians, Italians and Eastern Europeans are the largest immigrant groups. Many immigrants have brought their own family traditions to Scotland.