Main Page | See live article | Alphabetical index Main Page | See live article | Alphabetical index Yonne Yonne is a French département, number 89, named after the Yonne River. Préfecture (capital): Auxerre Sous-préfectures: Avallon and Sens. See also: List of Communes of the Yonne département of France This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.