Average GPS coordinates for Seyssel Postcode location: 45.959, 5.834. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Seyssel on map:

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Listing cities & postcodes (2):
>> Rhône-Alpes, 01420 Seyssel, Ain, Arrondissement de Belley, GPS coordinates: 45.959,5.8313
>> Rhône-Alpes, 74910 Seyssel, Haute-Savoie, Arrondissement de Saint-Julien-en-Genevois, GPS coordinates: 45.9591,5.8369