Postleitzahl Yvelines (78)
| Postleitzahl | City | X | Y |
 | 78660 | Ablis | 48.5283 | 1.85097 |
| | 78260 | Acheres | 48.9718 | 2.09004 |
| | 78113 | Adainville | 48.7202 | 1.66233 |
| | 78240 | Aigremont | 48.9008 | 2.01536 |
| | 78660 | Allainville | 48.4678 | 1.90249 |
| | 78770 | Andelu | 48.8882 | 1.81108 |
| | 78570 | Andresy | 48.9815 | 2.05026 |
| | 78790 | Arnouville les mantes | 48.911 | 1.72044 |
| | 78410 | Aubergenville | 48.9627 | 1.8487 |
| | 78610 | Auffargis | 48.6843 | 1.90244 |
| | 78930 | Auffreville brasseuil | 48.9544 | 1.70515 |
| | 78126 | Aulnay sur mauldre | 48.9291 | 1.84082 |
| | 78770 | Auteuil | 48.8395 | 1.81899 |
| | 78770 | Autouillet | 48.8439 | 1.797 |
| | 78870 | Bailly | 48.8367 | 2.08068 |
| | 78550 | Bazainville | 48.8073 | 1.66749 |
| | 78580 | Bazemont | 48.9319 | 1.8741 |
| | 78490 | Bazoches sur guyonne | 48.7738 | 1.85242 |
| | 78910 | Behoust | 48.8324 | 1.72424 |
| | 78270 | Bennecourt | 49.048 | 1.57232 |
| | 78650 | Beynes | 48.8544 | 1.86989 |
| | 78270 | Blaru | 49.0408 | 1.48064 |
| | 78930 | Boinville en mantois | 48.9285 | 1.74928 |
| | 78660 | Boinville le gaillard | 48.4958 | 1.87115 |
| | 78200 | Boinvilliers | 48.9205 | 1.66289 |
| | 78390 | Bois d'arcy | 48.8044 | 2.01911 |
| | 78910 | Boissets | 48.8587 | 1.58768 |
| | 78200 | Boissy mauvoisin | 48.9659 | 1.5816 |
| | 78490 | Boissy sans avoir | 48.821 | 1.79754 |
| | 78830 | Bonnelles | 48.6182 | 2.02963 |
| | 78270 | Bonnieres sur seine | 49.02 | 1.57059 |
| | 78410 | Bouafle | 48.9606 | 1.89715 |
| | 78380 | Bougival | 48.8636 | 2.13761 |
| | 78113 | Bourdonne | 48.7543 | 1.65394 |
| | 78930 | Breuil bois robert | 48.9436 | 1.71472 |
| | 78980 | Breval | 48.955 | 1.54155 |
| | 78440 | Brueil en vexin | 49.0264 | 1.81317 |
| | 78530 | Buc | 48.7718 | 2.12394 |
| | 78200 | Buchelay | 48.9837 | 1.67437 |
| | 78830 | Bullion | 48.6246 | 1.98308 |
| | 78955 | Carrieres sous poissy | 48.9456 | 2.02914 |
| | 78420 | Carrieres sur seine | 48.9119 | 2.17838 |
| | 78720 | Cernay la ville | 48.6696 | 1.95971 |
| | 78240 | Chambourcy | 48.8961 | 2.03322 |
| | 78570 | Chanteloup les vignes | 48.976 | 2.032 |
| | 78130 | Chapet | 48.9681 | 1.94012 |
| | 78117 | Chateaufort | 48.739 | 2.0951 |
| | 78400 | Chatou | 48.8966 | 2.15393 |
| | 78270 | Chaufour les bonnieres | 49.0158 | 1.48536 |
| | 78450 | Chavenay | 48.8484 | 1.98288 |
| | 78460 | Chevreuse | 48.7071 | 2.03714 |
| | 78460 | Choisel | 48.6739 | 2.01451 |
| | 78910 | Civry la foret | 48.8642 | 1.61683 |
| | 78120 | Clairefontaine en yvelines | 48.6168 | 1.90638 |
| | 78310 | Coignieres | 48.7498 | 1.91382 |
| | 78113 | Conde sur vesgre | 48.7325 | 1.67373 |
| | 78700 | Conflans sainte honorine | 49.0001 | 2.09907 |
| | 78790 | Courgent | 48.8957 | 1.65941 |
| | 78270 | Cravent | 48.9896 | 1.4846 |
| | 78121 | Crespieres | 48.8822 | 1.92112 |
| | 78290 | Croissy sur seine | 48.8788 | 2.13541 |
| | 78111 | Dammartin en serve | 48.9114 | 1.61781 |
| | 78720 | Dampierre en yvelines | 48.7037 | 1.97308 |
| | 78550 | Dannemarie | 48.764 | 1.60897 |
| | 78810 | Davron | 48.8636 | 1.94749 |
| | 78440 | Drocourt | 49.052 | 1.76822 |
| | 78920 | Ecquevilly | 48.9459 | 1.92004 |
| | 78990 | Elancourt | 48.7782 | 1.9605 |
| | 78125 | Emance | 48.5912 | 1.7339 |
| | 78680 | Epone | 48.9472 | 1.8127 |
| | 78740 | Evecquemont | 49.0172 | 1.94219 |
| | 78200 | Favrieux | 48.9448 | 1.64167 |
| | 78810 | Feucherolles | 48.8801 | 1.97984 |
| | 78200 | Flacourt | 48.9323 | 1.6426 |
| | 78910 | Flexanville | 48.8551 | 1.74312 |
Ende 75 Erste Ergebnisse (262 Städte insgesamt)