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.
Inhabitants are known in French as the Gargenvillois.
Wikipedia https://en.wikipedia.org/wiki/Gargenville
Coordinates 48°59'24.529" N 1°48'37.669" E