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.
- Arrondissement of Pontoise, (prefecture of the Val-d'Oise department: Pontoise) with 105 communes. The population of the arrondissement was 338,425 in 2016.
- Arrondissement of Sarcelles, (subprefecture: Sarcelles) with 62 communes. The population of the arrondissement was 471,164 in 2016.