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 2019, Val-d'Oise had a population of 1,249,674.
The arrondissement of Pontoise is an arrondissement of France in the Val-d'Oise department in the Île-de-France region. It has 104 communes. Its population is 349,407 (2021), and its area is 766.0 km2 (295.8 sq mi).
The arrondissement of Mantes-la-Jolie is an arrondissement of France in the Yvelines department in the Île-de-France region. It has 109 communes. Its population is 280,641 (2021), and its area is 759.0 km2 (293.1 sq mi).
Montagny-en-Vexin is a commune in the Oise department in northern France.
L'Isle-Adam is a commune in the Val-d'Oise department in Île-de-France in northern France. The small town beside the river Oise has a long sandy beach and attracts visitors from Paris.
Houville-en-Vexin is a commune in the Eure department in northern France.
Mézières-en-Vexin is a commune in the Eure department and Normandy region of France.
Boissy-le-Bois is a former commune in the Oise department in northern France. On 1 January 2019, it was merged into the new commune La Corne-en-Vexin.
Boury-en-Vexin is a commune in the Oise department in northern France.
Saint-Crépin-Ibouvillers is a commune in the Oise department in northern France. The village is located along the A16 Highspeed road, 5 km from Méru and 28 km away from Beauvais-Tillé Airport. It absorbed the former commune Montherlant in January 2015. The municipality has a population of 1,548 as of 2018.
Énencourt-le-Sec is a former commune in the Oise department in northern France. On 1 January 2019, it was merged into the new commune La Corne-en-Vexin.
Chaumont-en-Vexin is a commune in the Oise department in northern France.
Gargenville is a commune in the Yvelines department in the Île-de-France region in north-central France, 45 km to the center of Paris. It is part of the Parc naturel régional du Vexin français. With the neighborhing commune of Issou, it forms an urban area of around 10000 inhabitants.
Cormeilles-en-Vexin is a commune in the Val-d'Oise department in Île-de-France in northern France.
Maudétour-en-Vexin is a commune in the Val-d'Oise department in Île-de-France in northern France. It is located in the regional nature park of Vexin.
Vexin-sur-Epte is a commune in the department of Eure, northern France. The municipality was established on 1 January 2016 by merger of the former communes of Écos, Berthenonville, Bus-Saint-Rémy, Cahaignes, Cantiers, Civières, Dampsmesnil, Fontenay-en-Vexin, Forêt-la-Folie, Fourges, Fours-en-Vexin, Guitry, Panilleuse and Tourny.
The canton of Chaumont-en-Vexin is an administrative division of the Oise department, northern France. Its borders were modified at the French canton reorganisation which came into effect in March 2015. Its seat is in Chaumont-en-Vexin.
The Communauté urbaine Grand Paris Seine et Oise is the communauté urbaine, an intercommunal structure, covering the western suburbs of Paris. It is located in the Yvelines department, in the Île-de-France region, northern France. It was created in January 2016 by the merger of the previous communautés d'agglomération Mantes-en-Yvelines, Deux Rives de la Seine, Poissy-Achères-Conflans-Sainte-Honorine, Seine & Vexin and the communautés de communes Coteaux du Vexin and Seine-Mauldre. Its area is 504.7 km2. Its population was 417,556 in 2018. Its seat is in Aubergenville.
Frenelles-en-Vexin is a commune in the Eure department in Normandy in northern France. It was established on 1 January 2019 by merger of the former communes of Boisemont, Corny and Fresne-l'Archevêque.
La Corne-en-Vexin is a commune in the Oise department in northern France. It was established on 1 January 2019 by merger of the former communes of Énencourt-le-Sec, Boissy-le-Bois and Hardivillers-en-Vexin.
