Les Breuleux is a municipality in the district of Franches-Montagnes in the canton of Jura in Switzerland.HistoryLes Breuleux is first mentioned in 1429 as Les Bruilluit.GeographyLes Breuleux has an area of. Of this area, 6.72km2 or 62.2% is used for agricultural purposes, while 3.26km2 or 30.2% is forested. Of the rest of the land, 0.83km2 or 7.7% is settled (buildings or roads) and 0.01km2 or 0.1% is unproductive land.Of the built up area, industrial buildings made up 1.1% of the total area while housing and buildings made up 4.0% and transportation infrastructure made up 2.0%. Out of the forested land, 23.5% of the total land area is heavily forested and 6.7% is covered with orchards or small clusters of trees. Of the agricultural land, 3.4% is used for growing crops and 37.0% is pastures and 21.7% is used for alpine pastures.The municipality is located in the Franches-Montagnes district. It consists of a number of hamlets including Les Vacheries.The municipalities of Le Bémont, Les Bois, Les Breuleux, La Chaux-des-Breuleux, Les Enfers, Les Genevez, Lajoux, Montfaucon, Muriaux, Le Noirmont, Saignelégier, Saint-Brais and Soubey are considering a merger on at a date in the future into the new municipality of Franches-Montagnes.