thumb|200px|right
The following is a list of the 183 communes of the Val-d'Oise department of France.
The communes cooperate in the following intercommunalities (as of 2025):
- Métropole du Grand Paris (partly)
- Communauté d'agglomération de Cergy-Pontoise (partly)
- Communauté d'agglomération Plaine Vallée
- Communauté d'agglomération Roissy Pays de France (partly)
- Communauté d'agglomération Saint Germain Boucles de Seine (partly)
- Communauté d'agglomération Val Parisis
- Communauté de communes Carnelle Pays-de-France
- Communauté de communes du Haut Val d'Oise
- Communauté de communes Sausseron Impressionnistes
- Communauté de communes de la Vallée de l'Oise et des Trois Forêts
- Communauté de communes Vexin Centre
- Communauté de communes du Vexin-Val de Seine
{| class="wikitable sortable"
! INSEE code
! Postal code
! Commune
|-
| 95002
| 95450
| Ableiges
|-
| 95008
| 95510
| Aincourt
|-
| 95011
| 95710
| Ambleville
|-
| 95012
| 95510
| Amenucourt
|-
| 95014
| 95580
| Andilly
|-
| 95018
| 95100
| Argenteuil
|-
| 95019
| 95400
| Arnouville
|-
| 95023
| 95810
| Arronville
|-
| 95024
| 95420
| Arthies
|-
| 95026
| 95270
| Asnières-sur-Oise
|-
| 95028
| 95570
| Attainville
|-
| 95039
| 95430
| Auvers-sur-Oise
|-
| 95040
| 95450
| Avernes
|-
| 95042
| 95560
| Baillet-en-France
|-
| 95046
| 95420
| Banthelu
|-
| 95051
| 95250
| Beauchamp
|-
| 95052
| 95260
| Beaumont-sur-Oise
|-
| 95054
| 95750
| Le Bellay-en-Vexin
|-
| 95055
| 95270
| Bellefontaine
|-
| 95056
| 95270
| Belloy-en-France
|-
| 95058
| 95340
| Bernes-sur-Oise
|-
| 95059
| 95810
| Berville
|-
| 95060
| 95550
| Bessancourt
|-
| 95061
| 95840
| Béthemont-la-Forêt
|-
| 95063
| 95870
| Bezons
|-
| 95074
| 95000
| Boisemont
|-
| 95078
| 95650
| Boissy-l'Aillerie
|-
| 95088
| 95500
| Bonneuil-en-France
|-
| 95091
| 95570
| Bouffémont
|-
| 95094
| 95720
| Bouqueval
|-
| 95101
| 95710
| Bray-et-Lû
|-
| 95102
| 95640
| Bréançon
|-
| 95110
| 95640
| Brignancourt
|-
| 95116
| 95820
| Bruyères-sur-Oise
|-
| 95119
| 95770
| Buhy
|-
| 95120
| 95430
| Butry-sur-Oise
|-
| 95127
| 95000
| Cergy
|-
| 95134
| 95660
| Champagne-sur-Oise
|-
| 95139
| 95420
| La Chapelle-en-Vexin
|-
| 95141
| 95420
| Charmont
|-
| 95142
| 95750
| Chars
|-
| 95144
| 95190
| Châtenay-en-France
|-
| 95149
| 95270
| Chaumontel
|-
| 95150
| 95710
| Chaussy
|-
| 95151
| 95560
| Chauvry
|-
| 95154
| 95380
| Chennevières-lès-Louvres
|-
| 95157
| 95510
| Chérence
|-
| 95166
| 95420
| Cléry-en-Vexin
|-
| 95169
| 95450
| Commeny
|-
| 95170
| 95450
| Condécourt
|-
| 95176
| 95240
| Cormeilles-en-Parisis
|-
| 95177
| 95830
| Cormeilles-en-Vexin
|-
| 95181
| 95650
| Courcelles-sur-Viosne
|-
| 95183
| 95800
| Courdimanche
|-
| 95197
| 95170
| Deuil-la-Barre
|-
| 95199
| 95330
| Domont
|-
| 95203
| 95600
| Eaubonne
|-
| 95205
| 95440
| Écouen
|-
| 95210
| 95880
| Enghien-les-Bains
|-
| 95211
| 95300
| Ennery
|-
| 95212
| 95380
| Épiais-lès-Louvres
|-
| 95213
| 95810
| Épiais-Rhus
|-
| 95214
| 95270
| Épinay-Champlâtreux
|-
| 95218
| 95610
| Éragny
|-
| 95219
| 95120
| Ermont
|-
| 95229
| 95460
| Ézanville
|-
| 95241
| 95190
| Fontenay-en-Parisis
|-
| 95250
| 95470
| Fosses
|-
| 95252
| 95130
| Franconville
|-
| 95253
| 95450
| Frémainville
|-
| 95254
| 95830
| Frémécourt
|-
| 95256
| 95740
| Frépillon
|-
| 95257
| 95530
| La Frette-sur-Seine
|-
| 95258
| 95690
| Frouville
|-
| 95268
| 95140
| Garges-lès-Gonesse
|-
| 95270
| 95420
| Genainville
|-
| 95271
| 95650
| Génicourt
|-
| 95277
| 95500
| Gonesse
|-
| 95280
| 95190
| Goussainville
|-
| 95287
| 95810
| Grisy-les-Plâtres
|-
| 95288
| 95410
| Groslay
|-
| 95295
| 95450
| Guiry-en-Vexin
|-
| 95298
| 95640
| Haravilliers
|-
| 95301
| 95780
| Haute-Isle
|-
| 95303
| 95640
| Le Heaulme
|-
| 95304
| 95690
| Hédouville
|-
| 95306
| 95220
| Herblay-sur-Seine
|-
| 95308
| 95300
| Hérouville-en-Vexin
|-
| 95309
| 95420
| Hodent
|-
| 95313
| 95290
| L'Isle-Adam
|-
| 95316
| 95850
| Jagny-sous-Bois
|-
|}
{| class="wikitable sortable"
! INSEE code
! Postal code
! Commune
|-
| 95323
| 95280
| Jouy-le-Moutier
|-
| 95328
| 95690
| Labbeville
|-
| 95331
| 95270
| Lassy
|-
| 95341
| 95300
| Livilliers
|-
| 95348
| 95450
| Longuesse
|-
| 95351
| 95380
| Louvres
|-
| 95352
| 95270
| Luzarches
|-
| 95353
| 95560
| Maffliers
|-
| 95355
| 95420
| Magny-en-Vexin
|-
| 95365
| 95850
| Mareil-en-France
|-
| 95369
| 95580
| Margency
|-
| 95370
| 95640
| Marines
|-
| 95371
| 95670
| Marly-la-Ville
|-
| 95379
| 95420
| Maudétour-en-Vexin
|-
| 95387
| 95810
| Menouville
|-
| 95388
| 95180
| Menucourt
|-
| 95392
| 95630
| Mériel
|-
| 95394
| 95540
| Méry-sur-Oise
|-
| 95395
| 95720
| Le Mesnil-Aubry
|-
| 95409
| 95570
| Moisselles
|-
| 95422
| 95650
| Montgeroult
|-
| 95424
| 95370
| Montigny-lès-Cormeilles
|-
| 95426
| 95680
| Montlignon
|-
| 95427
| 95360
| Montmagny
|-
| 95428
| 95160
| Montmorency
|-
| 95429
| 95770
| Montreuil-sur-Epte
|-
| 95430
| 95560
| Montsoult
|-
| 95436
| 95260
| Mours
|-
| 95438
| 95640
| Moussy
|-
| 95445
| 95590
| Nerville-la-Forêt
|-
| 95446
| 95690
| Nesles-la-Vallée
|-
| 95447
| 95640
| Neuilly-en-Vexin
|-
| 95450
| 95000
| Neuville-sur-Oise
|-
| 95452
| 95590
| Nointel
|-
| 95456
| 95270
| Noisy-sur-Oise
|-
| 95459
| 95420
| Nucourt
|-
| 95462
| 95420
| Omerville
|-
| 95476
| 95520
| Osny
|-
| 95480
| 95620
| Parmain
|-
| 95483
| 95450
| Le Perchay
|-
| 95487
| 95340
| Persan
|-
| 95488
| 95480
| Pierrelaye
|-
| 95489
| 95350
| Piscop
|-
| 95491
| 95130
| Le Plessis-Bouchard
|-
| 95492
| 95720
| Le Plessis-Gassot
|-
| 95493
| 95270
| Le Plessis-Luzarches
|-
| 95500
| 95300
| Pontoise
|-
| 95504
| 95590
| Presles
|-
| 95509
| 95380
| Puiseux-en-France
|-
| 95510
| 95650
| Puiseux-Pontoise
|-
| 95523
| 95780
| La Roche-Guyon
|-
| 95527
| 95700
| Roissy-en-France
|-
| 95529
| 95340
| Ronquerolles
|-
| 95535
| 95450
| Sagy
|-
| 95539
| 95350
| Saint-Brice-sous-Forêt
|-
| 95541
| 95770
| Saint-Clair-sur-Epte
|-
| 95543
| 95510
| Saint-Cyr-en-Arthies
|-
| 95554
| 95420
| Saint-Gervais
|-
| 95555
| 95210
| Saint-Gratien
|-
| 95563
| 95320
| Saint-Leu-la-Forêt
|-
| 95566
| 95270
| Saint-Martin-du-Tertre
|-
| 95572
| 95310
| Saint-Ouen-l'Aumône
|-
| 95574
| 95390
| Saint-Prix
|-
| 95580
| 95470
| Saint-Witz
|-
| 95582
| 95110
| Sannois
|-
| 95584
| 95640
| Santeuil
|-
| 95585
| 95200
| Sarcelles
|-
| 95592
| 95450
| Seraincourt
|-
| 95594
| 95270
| Seugy
|-
| 95598
| 95230
| Soisy-sous-Montmorency
|-
| 95604
| 95470
| Survilliers
|-
| 95607
| 95150
| Taverny
|-
| 95610
| 95450
| Théméricourt
|-
| 95611
| 95810
| Theuville
|-
| 95612
| 95500
| Le Thillay
|-
| 95625
| 95450
| Us
|-
| 95627
| 95810
| Vallangoujard
|-
| 95628
| 95760
| Valmondois
|-
| 95633
| 95500
| Vaudherland
|-
| 95637
| 95490
| Vauréal
|-
| 95641
| 95470
| Vémars
|-
| 95651
| 95510
| Vétheuil
|-
| 95652
| 95270
| Viarmes
|-
| 95656
| 95510
| Vienne-en-Arthies
|-
| 95658
| 95450
| Vigny
|-
| 95660
| 95570
| Villaines-sous-Bois
|-
| 95675
| 95380
| Villeron
|-
| 95676
| 95510
| Villers-en-Arthies
|-
| 95678
| 95840
| Villiers-Adam
|-
| 95680
| 95400
| Villiers-le-Bel
|-
| 95682
| 95720
| Villiers-le-Sec
|-
| 95690
| 95420
| Wy-dit-Joli-Village
|}