Average household size in Ile-de-France

Average household size in Ile-de-France
The National Institute of Statistics and Economic Studies (Insee Ile-de-France), the Development and Urbanism Institute (IAUîdF), the Paris Urbanism Workshop (Apur), the Ile-de- France Regional and Interdepartmental Department of Infrastructure and Development (DREIA) and the Regional and Inter-departmental Department of Accommodation and Housing (DRIHL) collectively produced a study about changes in the size of households in Ile-de-France. This dossier of 4 articles collates statistical information concerning the various factors affecting changes in the size of households in Ile-de-France and details the characteristics of each territory.
The average number of occupants by principal residence, which has been continuously decreasing since 1968, has stabilised in Ile-de-France since 2006 at around 2.3 people per household, although this figure is continuing to decrease in the provinces.
The rate of growth in the number of households in Ile-de-France, which was formerly considerably higher than that of the population, has been decreasing for about twenty years and they are now at about the same level. Only the aging of the population is contributing to the reduction in the average size of households, although this is being mitigated by migration. This decrease is being offset by life-style changes which are pushing in the opposite direction and increasing the number of people per household.
Young people staying at home with their parents (increase in the length of studies, cost of accommodation…), delaying setting up as couples, blended families, and also elderly parents moving back in because their health is deteriorating, are some of the many changes leading to an increase in the average size of households in Ile-de-France, particularly in Paris and the inner suburbs.


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  • Average household size in Ile-de-France

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