Arrondissements of the Val-d'Oise department

The 3 arrondissements of the Val-d'Oise department are:[1] 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.

[2] 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.

[3] In March 2000 Sarcelles replaced Montmorency as subprefecture.

[3][4] The borders of the arrondissements of Val-d'Oise were modified in January 2017:[5]