| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Cachan | city | France | 48.80 | 2.34 | 341 | 1006675 | |
| Cachon | city | France | 48.80 | 2.34 | 341 | 1006675 | |
| Cady | city | France | 48.62 | 1.67 | 403 | 12067 | |
| Camburciacum | city | France | 48.91 | 2.04 | 265 | 98387 | |
| Camp de Satory | city | France | 48.79 | 2.11 | 830 | 182635 | |
| Canada | city | France | 48.93 | 1.78 | 390 | 20128 | |
| Caprosia | city | France | 48.71 | 2.03 | 285 | 31168 | |
| Carentonium | city | France | 48.82 | 2.41 | 173 | 1096921 | |
| Caronte | city | France | 48.87 | 2.40 | 229 | 1460477 | |
| Carrieres | city | France | 48.95 | 2.04 | 75 | 118294 | |
| Carrieres | city | France | 48.91 | 2.18 | 85 | 443550 | |
| Carrieres sur Poissy | city | France | 48.95 | 2.04 | 75 | 118294 | |
| Carrieres-sous-Poissy | city | France | 48.95 | 2.04 | 75 | 118294 | |
| Carrieres-sur-Seine | city | France | 48.91 | 2.18 | 85 | 443550 | |
| Caticantus | city | France | 48.80 | 2.34 | 341 | 1006675 | |
| Cativilla | city | France | 48.81 | 2.19 | 830 | 291872 | |
| Cergeium | city | France | 49.04 | 2.08 | 98 | 186493 | |
| Cergy | city | France | 49.04 | 2.08 | 98 | 186493 | |
| Cernay | city | France | 48.67 | 1.97 | 830 | 8026 | |
| Cernay-la-Ville | city | France | 48.67 | 1.97 | 830 | 8026 | |
| Cerny | city | France | 48.48 | 2.33 | 239 | 19788 | |
| Cerqueuse | city | France | 48.65 | 1.78 | 830 | 17475 | |
| Chalou | city | France | 48.38 | 2.02 | 830 | 4378 | |
| Chalou-Moulineux | city | France | 48.38 | 2.02 | 830 | 4378 | |
| Chamarande | city | France | 48.52 | 2.22 | 213 | 20191 | |
| Chambourcy | city | France | 48.91 | 2.04 | 265 | 98387 | |
| Champagne | city | France | 49.14 | 2.24 | 82 | 51486 | |
| Champagne-sur-Oise | city | France | 49.14 | 2.24 | 82 | 51486 | |
| Champcueil | city | France | 48.52 | 2.45 | 262 | 21350 | |
| Champignol | city | France | 48.81 | 2.51 | 111 | 494340 | |
| Champigny | city | France | 48.82 | 2.49 | 127 | 529950 | |
| Champigny-sur-Marne | city | France | 48.82 | 2.49 | 127 | 529950 | |
| Champlan | city | France | 48.71 | 2.28 | 259 | 201494 | |
| Champmotteux | city | France | 48.34 | 2.32 | 830 | 2883 | |
| Champrosay | city | France | 48.66 | 2.43 | 137 | 227780 | |
| Chantambre | city | France | 48.35 | 2.39 | 321 | 7255 | |
| Chanteloup | city | France | 48.98 | 2.03 | 147 | 143047 | |
| Chanteloup-les-Vignes | city | France | 48.98 | 2.03 | 147 | 143047 | |
| Chantemesle | city | France | 49.08 | 1.67 | 830 | 5802 | |
| Chanval | city | France | 48.36 | 2.09 | 377 | 5857 | |
| Chapelle-en-Vexin | city | France | 49.18 | 1.73 | 830 | 4095 | |
| Chapet | city | France | 48.97 | 1.93 | 282 | 79194 | |
| Chardonnet | city | France | 48.63 | 2.07 | 830 | 19208 | |
| Charenton | city | France | 48.82 | 2.41 | 173 | 1096921 | |
| Charenton-Saint-Maurice | city | France | 48.82 | 2.43 | 200 | 926810 | |
| Charenton-le-Pont | city | France | 48.82 | 2.41 | 173 | 1096921 | |
| Charlebourg | city | France | 48.91 | 2.25 | 131 | 914861 | |
| Charmont | city | France | 49.14 | 1.79 | 380 | 8729 | |
| Charonne | city | France | 48.87 | 2.40 | 229 | 1460477 | |
| Chars | city | France | 49.16 | 1.94 | 298 | 7807 | |
| Chateaufort | city | France | 48.74 | 2.09 | 370 | 87308 | |
| Chatenay | city | France | 48.77 | 2.27 | 318 | 388661 | |
| Chatenay-Malabry | city | France | 48.77 | 2.27 | 318 | 388661 | |
| Chatignonville | city | France | 48.47 | 1.93 | 830 | 3342 | |
| Chatillon-sous-Bagneux | city | France | 48.80 | 2.29 | 337 | 1044698 | |
| Chatonville | city | France | 48.56 | 1.87 | 830 | 6496 | |
| Chatou | city | France | 48.89 | 2.16 | 95 | 370208 | |
| Chauffour | city | France | 48.50 | 2.17 | 318 | 16319 | |
| Chauffour-les-Etrechy | city | France | 48.50 | 2.17 | 318 | 16319 | |
| Chaufour | city | France | 49.02 | 1.48 | 830 | 9728 | |
| Chaufour | city | France | 48.95 | 1.78 | 830 | 36393 | |
| Chaufour-les-Bonnieres | city | France | 49.02 | 1.48 | 830 | 9728 | |
| Chaufour-lez Bonnieres | city | France | 49.02 | 1.48 | 830 | 9728 | |
| Chaumontel | city | France | 49.12 | 2.43 | 249 | 26430 | |
| Chaumusson | city | France | 48.65 | 2.07 | 830 | 23709 | |
| Chaussy | city | France | 49.12 | 1.69 | 318 | 4561 | |
| Chauvry | city | France | 49.05 | 2.27 | 380 | 74683 | |
| Chavenay | city | France | 48.85 | 1.99 | 364 | 68740 | |
| Chaville | city | France | 48.81 | 2.19 | 830 | 291872 | |
| Chennevieres | city | France | 48.80 | 2.54 | 331 | 329267 | |
| Chennevieres-les-Louvres | city | France | 49.04 | 2.55 | 377 | 29609 | |
| Chennevieres-sur-Marne | city | France | 48.80 | 2.54 | 331 | 329267 | |
| Chennevières | city | France | 49.04 | 2.55 | 377 | 29609 | |
| Cheptainville | city | France | 48.55 | 2.28 | 262 | 52480 | |
| Cherchefeuilles | city | France | 48.68 | 2.35 | 121 | 264235 | |
| Chevannes | city | France | 48.53 | 2.44 | 262 | 30248 | |
| Chevilly | city | France | 48.76 | 2.35 | 285 | 465082 | |
| Chevilly-Larue | city | France | 48.76 | 2.35 | 285 | 465082 | |
| Chevreuse | city | France | 48.71 | 2.03 | 285 | 31168 | |
| Chicheny | city | France | 48.37 | 2.05 | 830 | 5249 | |
| Chilly-Mazarin | city | France | 48.71 | 2.32 | 262 | 256002 | |
| Choisel | city | France | 48.69 | 2.02 | 830 | 17323 | |
| Choisy | city | France | 48.77 | 2.42 | 104 | 487842 | |
| Choisy-le-Roi | city | France | 48.77 | 2.42 | 104 | 487842 | |
| Châlo-Saint-Marc | city | France | 48.43 | 2.07 | 830 | 4668 | |
| Châlo-Saint-Mars | city | France | 48.43 | 2.07 | 830 | 4668 | |
| Châtenay | city | France | 49.07 | 2.46 | 410 | 49752 | |
| Châtenay-en-France | city | France | 49.07 | 2.46 | 410 | 49752 | |
| Châtenay-lès-Bagneux | city | France | 48.77 | 2.27 | 318 | 388661 | |
| Châtillon | city | France | 48.80 | 2.29 | 337 | 1044698 | |
| Chérance | city | France | 49.09 | 1.68 | 830 | 5169 | |
| Chérence | city | France | 49.09 | 1.68 | 830 | 5169 | |
| Chêne-Godon | city | France | 49.05 | 1.50 | 830 | 22493 | |
| Civry | city | France | 48.87 | 1.61 | 413 | 6497 | |
| Civry-la-Forêt | city | France | 48.87 | 1.61 | 413 | 6497 | |
| Clachaloze | city | France | 49.07 | 1.60 | 55 | 16318 | |
| Clairefontaine | city | France | 48.61 | 1.91 | 830 | 10763 | |
| Clamart | city | France | 48.80 | 2.27 | 830 | 887200 | |
| Clayes-sous-Bois | city | France | 48.82 | 1.99 | 387 | 119373 | |
| Clemartium | city | France | 48.80 | 2.27 | 830 | 887200 | |
| Clery-en-Vexin | city | France | 49.13 | 1.84 | 830 | 8283 | |
| Clichy | city | France | 48.90 | 2.31 | 124 | 1231567 | |
| Clichy | city | France | 48.91 | 2.55 | 374 | 346637 | |
| Clichy-la-Garenne | city | France | 48.90 | 2.31 | 124 | 1231567 | |
| Clichy-sous-Bois | city | France | 48.91 | 2.55 | 374 | 346637 | |
| Clichy-sur-Seine | city | France | 48.90 | 2.31 | 124 | 1231567 | |
| Clicy | city | France | 48.90 | 2.31 | 124 | 1231567 | |
| Cloton | city | France | 49.04 | 1.57 | 82 | 16308 | |
| Cléry | city | France | 49.13 | 1.84 | 830 | 8283 | |
| Coeuilly | city | France | 48.81 | 2.55 | 344 | 355108 | |
| Coignières | city | France | 48.75 | 1.92 | 830 | 79645 | |
| Colombes | city | France | 48.92 | 2.25 | 131 | 814958 | |
| Columbae | city | France | 48.92 | 2.25 | 131 | 814958 | |
| Commeny | city | France | 49.13 | 1.89 | 344 | 5899 | |
| Communauté d’agglomération de Saint-Quentin-en-Yvelines | city | France | 48.77 | 2.00 | 830 | 157697 | |
| Concy | city | France | 48.71 | 2.47 | 229 | 212523 | |
| Conde-sur-Vesgre | city | France | 48.74 | 1.66 | 377 | 5375 | |
| Condé | city | France | 48.74 | 1.66 | 377 | 5375 | |
| Condécourt | city | France | 49.04 | 1.94 | 331 | 49883 | |
| Conflans | city | France | 49.00 | 2.10 | 160 | 173231 | |
| Conflans-Sainte-Honorine | city | France | 49.00 | 2.10 | 160 | 173231 | |
| Congerville | city | France | 48.39 | 1.99 | 830 | 4347 | |
| Copiere | city | France | 49.17 | 1.68 | 830 | 4743 | |
| Copièrres | city | France | 49.17 | 1.68 | 830 | 4743 | |
| Corbeil | city | France | 48.61 | 2.49 | 295 | 109603 | |
| Corbeil-Essonnes | city | France | 48.61 | 2.49 | 295 | 109603 | |
| Corbreuse | city | France | 48.50 | 1.96 | 830 | 10278 | |
| Cormeilles | city | France | 48.97 | 2.20 | 380 | 351653 | |
| Cormeilles | city | France | 49.12 | 2.02 | 380 | 15497 | |
| Cormeilles-en-Parisis | city | France | 48.97 | 2.20 | 380 | 351653 | |
| Cormeilles-en-Vexin | city | France | 49.12 | 2.02 | 380 | 15497 | |
| Coubron | city | France | 48.92 | 2.58 | 203 | 252243 | |
| Coudray-Montceaux | city | France | 48.56 | 2.50 | 259 | 62262 | |
| Courances | city | France | 48.44 | 2.48 | 272 | 7634 | |
| Courbevoic | city | France | 48.89 | 2.25 | 104 | 983336 | |
| Courcelle | city | France | 48.70 | 2.10 | 364 | 50824 | |
| Courcelle-sur Yvette | city | France | 48.70 | 2.10 | 364 | 50824 | |
| Courcelle-sur-Yvette | city | France | 48.70 | 2.10 | 364 | 50824 | |
| Courcelles | city | France | 48.70 | 2.10 | 364 | 50824 | |
| Courcelles | city | France | 49.08 | 2.00 | 282 | 56937 | |
| Courcelles-sur Yvette | city | France | 48.70 | 2.10 | 364 | 50824 | |
| Courcelles-sur-Viosne | city | France | 49.08 | 2.00 | 282 | 56937 | |
| Courcouronnes | city | France | 48.61 | 2.41 | 265 | 164901 | |
| Courdimanche | city | France | 48.42 | 2.38 | 196 | 10012 | |
| Courdimanche | city | France | 49.04 | 2.00 | 367 | 105337 | |
| Courdimanche-sur-Essonne | city | France | 48.42 | 2.38 | 196 | 10012 | |
| Courdimanche-sur-Essonnes | city | France | 48.42 | 2.38 | 196 | 10012 | |
| Courgent | city | France | 48.90 | 1.66 | 347 | 7659 | |
| Courson | city | France | 48.60 | 2.15 | 285 | 25953 | |
| Courson-Monteloup | city | France | 48.60 | 2.15 | 285 | 25953 | |
| Craches | city | France | 48.56 | 1.81 | 830 | 4882 | |
| Cravent | city | France | 48.99 | 1.49 | 830 | 5502 | |
| Crespieres | city | France | 48.88 | 1.92 | 396 | 20526 | |
| Creteil | city | France | 48.79 | 2.47 | 114 | 575078 | |
| Croissy | city | France | 48.88 | 2.14 | 91 | 284148 | |
| Croissy-sur-Seine | city | France | 48.88 | 2.14 | 91 | 284148 | |
| Crosne | city | France | 48.72 | 2.46 | 114 | 244556 | |
| Crosnes | city | France | 48.72 | 2.46 | 114 | 244556 |