Ormesson-sur-Marne is a commune in the southeastern suburbs of Paris, France. It is located 16.1 km from the center of Paris. Ormesson-sur …Ormesson-sur-Marne is a commune in the southeastern suburbs of Paris, France. It is located 16.1 km from the center of Paris. Ormesson-sur-Marne is served by no station of the Paris Métro, RER, or suburban rail network. The closest stations to Ormesson-sur-Marne are two stations on Paris RER line A: Sucy – Bonneuil and La Varenne – Chennevières. The former is located in the neighboring commune of Sucy-en-Brie, 1.8 km from the town center of Ormesson-sur-Marne, and the latter is located in the neighboring commune of Saint-Maur-des-Fossés, 1.4 km from the town center of Ormesson-sur-Marne.