Arrondissement of Châlons-en-Champagne
The arrondissement of Châlons-en-Champagne is the central arrondissements of the Marne department. It is bordered to the north by the arrondissement of Reims and, for a short distance, by the Ardennes department; to the northeast by the Sainte-Menehould arrondissement; to the southeast and south by the Vitry-le-François arrondissement; and to the west by the Épernay arrondissement.