In 2018, 4 million children under 18 live with only one of their parents at home

In France, in 2018, 68% of children under 18 live in a "traditional" family, 21% live in a single-parent family, and 11% live in a blended family: 7% with one parent and one step-parent and 4% with both of their parents and half siblings in the dwelling. Overall, 28% of children live with only one of their parents in the dwelling.

In blended families, children are less likely to live with two employed adults (58%) than in "traditional" families (68%).

Children in blended families are less present in large urban centres, where, conversely, the proportion of children in single-parent families is high.

The proportion of children living in blended families varies across departments, from 7% in Martinique and Hauts-de-Seine to 17% in French Guiana. Children in "traditional" families are more likely to live in the west and east parts of France, while those in single-parent families are more prevalent in the Mediterranean region and the overseas departments.