High Quality Content by WIKIPEDIA articles! Saint-Arnoult, Oise is a commune in the Oise department in northern France. Oise is a department in the north of France. It is named after the river Oise.Oise is one of the original 83 departments created during the French Revolution on March 4, 1790. It was created from part of the province of Île-de-France and Picardy.Oise is part of the current region of Picardie and is situated 35 km north of Paris. It is surrounded by the departments of Somme, Aisne, Seine-et-Marne, Val-d'Oise, Eure, and Seine-Maritime.