The city of Paris is divided into twenty arrondissements. The number of the arrondissement is indicated by the last two digits in most Parisian postal codes (75001 up to 75020). The twenty arrondissements are arranged in the form of a clockwise spiral, starting in the middle of the city.

1st Louvre 2nd Bourse 3rd Temple 4th Hôtel-de-Ville 5th Panthéon 6th Luxembourg 7th Palais-Bourbon 8th Élysée 9th Opéra 10th Enclos-St-Laurent 11th Popincourt 12th Reuilly 13th Gobelins 14th Observatoire 15th Vaugirard 16th Passy 17th Batignolles-Monceau 18th Butte-Montmartre 19th Buttes-Chaumont 20th Ménilmontant.