Argenteuil (French pronunciation: ) is a commune in the northwestern suburbs of Paris, France. It is located 12.3 km (7.6 mi) from the center of Paris. Argenteuil is a sub-prefecture of the Val-d'Oise department, the seat of the arrondissement of Argenteuil. Argenteuil is the second most populous commune in the suburbs of Paris (after Boulogne-Billancourt) and the most populous one in the Val-d'Oise department, although it is not its prefecture, which is shared between the communes of Cergy and Pontoise. Argenteul share borders with communes in 3 departements others than Val d'Oise : the Yvelines, Hauts-de-Seine and Seine-Saint-Denis departements.