The Île-de-France is the most populous of the eighteen regions of France, with an official estimated population of 12,271,794 residents on 1 January 2023. Containing the capital city of France, Paris,
Eiffel Tower from the Tour Montparnasse 3, Paris May 2014
Val-d'Oise is a department in the Île-de-France region, Northern France. It was created in 1968 following the split of the Seine-et-Oise department. In 2023, Val-d'Oise had a population of 1,281,653.