Courroux (, ; ) is a municipality in the district of Delémont in the canton of Jura in Switzerland. History Courroux is first mentioned in 1146 under its German name as Lütoltesdorf. The French name was first mentioned in 1148 as Corolt. Geography Courroux has an area of . Of this area, or 53.3% is used for agricultural purposes, while or 38.4% is forested. Of the rest of the land, or 7.5% is settled (buildings or roads), or 0.6% is either rivers or lakes and or 0.3% is unproductive land. Of the built up area, housing and buildings made up 4.8% and transportation infrastructure made up 1.7%. Out of the forested land, 36.3% of the total land area is heavily forested and 2.1% is covered with orchards or small clusters of trees. Of the agricultural land, 33.7% is used for growing crops and 10.4% is pastures and 8.6% is used for alpine pastures. All the water in the municipality is flowing water. The municipality is located in the Delémont district, three kilometers southeast of the city of Delémont and east of the confluence of the Scheulte and Birs rivers. North of the village is the forested Bambois mountain with the peak Roc de Courroux () named after the village. In 2011 the municipalities of Corban, Courchapoix, Courroux, Mervelier, Montsevelier, Vermes and Vicques were considering a merger into the new municipality of Val Terbi. However, only the municipalities of Montsevelier, Vermes and Vicques merged on 1 January 2013 into Val Terbi. Coat of arms The blazon of the municipal coat of arms is Gules, a Saltire Or, in chief a Mullet of Five of the same. Demographics Courroux has a population () of . , 10.0% of the population are resident foreign nationals. Over the last 10 years (2000–2010) the population has changed at a rate of 11.3%. Migration accounted for 5.7%, while births and deaths accounted for 6.1%. Most of the population () speaks French (2,505 or 91.7%) as their first language, German is the second most common (96 or 3.5%) and Italian is the third (40 or 1.5%). There are 5 people who speak Romansh. , the population was 49.0% male and 51.0% female. The population was made up of 1,343 Swiss men (43.8% of the population) and 161 (5.2%) non-Swiss men. There were 1,414 Swiss women (46.1%) and 151 (4.9%) non-Swiss women. Of the population in the municipality,