The Nordic social security systems are designed to fit the characteristics of their inhabitants.
One characteristic trait of Nordic families is the relatively large number of single parents. Denmark has the highest rate while Iceland has the lowest rate of single parents.
In all Nordic countries, there are considerably more single mothers than single fathers.
Children in households
The number of children per household is very similar across the Nordic countries. One or two children being the most frequent, and three or more being considerably less frequent. The average number of children per household is almost identical among all Nordic countries.