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How French name their localities: department, city, town, district ? You find also their zipcode. The cities, towns in France are all called communes with a Mayer as administtrative chief, independently of its population and town size. Sometime, a town with only 3 souls has a mayer.

This is very different from the Chinese calling. There one has Chief of Village, Chief of Town, Chief of City.

In France, the zipcode is generally composed of 5 digits, of which the first two are the code of the departement that it belongs to.

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