Châtillon (; Valdôtain: ; Issime ); is a town and comune (municipality) in the autonomous region of the Aosta Valley in northwestern Italy. It has 4,299 inhabitants. (On the search form, choose the statistical region of the municipality in the Area section, the Region, the Province, and the name of the Municipality)The file URL linking on technical dataset.
Châtillon borders the municipalities of Antey-Saint-André, Ayas, Champdepraz, La Magdeleine, Montjovet, Pontey, Saint-Denis, Saint-Vincent, and Torgnon.
Name Châtillon was renamed "Castiglion Dora" in Italian in 1939 during Fascist rule in Italy. It was reverted to its original name in 1946.
Hameaux Albard, Les Arsines, Assert, Bacquéret, Barat, La Barme-des-Antesans, Barmafol, Barmusse, Bellecombe, Bertinaz, Biaveusse, Les Biolasses, Biovre, Boësse, Les Boëttes, Breil-de-Barrel (Petit-Breil), Gros-Breil, Brun, Bourg, Le Brenvey, Breton, Brusoncles, Brusoncles-des-Gard (Brusoncles-Dessus), Brusoncles-des-Janin (Brusoncles-Dessous), Chaméran, Champ, Champeillon, Champ-Long, Champ-Cellier, Chardin, Chavod, Le Cheney, Chésallet, Cillod, Les Cloîtres, Closel, Conoz, Crêt-Blanc, Crêt-de-Breil, Le Crêt, Crétadonaz, Crétaz, Crétaz-Chardon, Les Dévies, Domianaz, L'Étavey, Étrop, Fontanellaz, La Fournaise, Les Fours, Francou, Grand-Freyan, Petit-Freyan, Frassiney, Garin, Jacquemet, Gléréyaz, Govergnou, Les Grands-Prés, Grange-de-Barme, Les Îles, Isseuries, Larianaz, La Marcaz, Merlin, Murates, Mont-Ros, Morasset, Moriolaz, Neyran, Nissod, Nouarsaz, La Nouvaz, Pavirolaz, Les Pérolles, Perrianaz, Perry, Pie, Pissin, Plan-Pissin, Plantin, Pointé, Praz-Carral, Praz-Garin, Praz-Négoz, Prélaz, Promiod, Rumélaz, Revard, Saint-Valentin, Saint-Clair, Salé, La Salère, Sarmasse, Salèche, Selotaz, Serviou, Sétoret, Saix-de-Val, Soleil, Solettaz, Sopien, La Sounère, Taxard, Les Toles, Tollein, Toniquet, Tornafol, Tour-de-Grange, La Tour, Travod, Ussel, Varé, Ventoux, La Verdettaz, Verlex.
Demographics As of 2026, the population is 4,299, of which 49% are male, and 51% are female. Minors make up 12.3% of the population, and seniors make up 27%. (On the search form, choose the statistical region of the municipality in the Area section, the Region, the Province, and the name of the Municipality)The file URL linking on technical dataset.
Immigration As of 2025, of the known countries of birth of 4,244 residents, the most numerous are: Italy (3,770 – 88.8%), Morocco (110 – 2.6%), Romania (69 – 1.6%), France (44 – 1%), Brazil (26 – 0.6%). (Click on 'View by country of birth', and on the search form, choose the statistical region of the municipality in the Area section, the Region, the Province, and the name of the Municipality)The file URL linking on technical dataset.
Notable people Châtillon is the ancestral home of the Bich family, whose most famous member was Marcel Bich, founder of Société Bic.
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