Arrondissements of the Val-d'Oise department

The 3 arrondissements of the Val-d'Oise department are:
 * 1) Arrondissement of Argenteuil, (subprefecture: Argenteuil) with 17 communes.  The population of the arrondissement was 412,334 in 2016.
 * 2) Arrondissement of Pontoise, (prefecture of the Val-d'Oise department: Pontoise) with 105 communes.  The population of the arrondissement was 338,425 in 2016.
 * 3) Arrondissement of Sarcelles, (subprefecture: Sarcelles) with 62 communes.  The population of the arrondissement was 471,164 in 2016.

History
As parts of the department Seine-et-Oise, the arrondissement of Pontoise was established in 1800, the arrondissement of Montmorency in 1962 and the arrondissement of Argenteuil in 1966. In 1968 the department Val-d'Oise was created from part of the former department Seine-et-Oise, and the arrondissements of Pontoise, Argenteuil and Montmorency became part of it. In March 2000 Sarcelles replaced Montmorency as subprefecture.

The borders of the arrondissements of Val-d'Oise were modified in January 2017:
 * 10 communes from the arrondissement of Pontoise to the arrondissement of Argenteuil
 * two communes from the arrondissement of Pontoise to the arrondissement of Sarcelles
 * one commune from the arrondissement of Sarcelles to the arrondissement of Pontoise