Saint-Ouen is located in Paris city, France at the 48.9, 2.3333 coordinates. Distance from Saint-Ouen to other cities. are listed below, click on the city name to find distance between. Distance from Saint-Ouen to Cergy-Pontoise 24 km, to Saint-Quentin-en-Yvelines 27 km, to Boulogne-Billancourt 10 km. The green marker indicates the location of Saint-Ouen.