Average GPS coordinates for Cergy Postcode location: 49.036, 2.076. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Cergy on map:

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Listing cities & postcodes (2):
>> Île-de-France, 95000 Cergy, Val-d'Oise, Arrondissement de Pontoise, GPS coordinates: 49.0364,2.0761
>> Île-de-France, 95800 Cergy, Val-d'Oise, Arrondissement de Pontoise, GPS coordinates: 49.0364,2.0761