Derendingen is a municipality in the district of Wasseramt in the canton of Solothurn in Switzerland. History Derendingen is first mentioned in 1264 as Teradingen. Originally an agricultural community, it became a centre of textiles industry in the 1860s. The housing estate Elsässli is now a monument. Geography Derendingen has an area, , of . Of this area, or 39.1% is used for agricultural purposes, while or 26.7% is forested. Of the rest of the land, or 32.6% is settled (buildings or roads), or 1.4% is either rivers or lakes. Of the built up area, industrial buildings made up 3.4% of the total area while housing and buildings made up 18.7% and transportation infrastructure made up 7.8%. while parks, green belts and sports fields made up 2.1%. Out of the forested land, 24.7% of the total land area is heavily forested and 2.0% is covered with orchards or small clusters of trees. Of the agricultural land, 29.7% is used for growing crops and 8.0% is pastures, while 1.4% is used for orchards or vine crops. All the water in the municipality is flowing water. The municipality is located in the Wasseramt district, on the lower reaches of the Emme river. The municipalities of Biberist, Derendingen, Luterbach, Bellach, Langendorf and Solothurn are considering a merger at a date in the future into the new municipality of with an, , undetermined name. Coat of arms The blazon of the municipal coat of arms is Argent three bends Gules and overall a Fish naiant Azure. Demographics Derendingen has a population () of . , 26.2% of the population are resident foreign nationals. Over the last 10 years (1999–2009 ) the population has changed at a rate of 3.8%. It has changed at a rate of 5.4% due to migration and at a rate of 0.8% due to births and deaths. Most of the population () speaks German (4,942 or 85.1%), with Italian being second most common (346 or 6.0%) and Albanian being third (134 or 2.3%). There are 38 people who speak French and 1 person who speaks Romansh. , the gender distribution of the population was 49.6% male and 50.4% female. The population was made up of 2,098 Swiss men (34.3% of the population) and 930 (15.2%) non-Swiss men. There were 2,291 Swiss women (37.5%) and 790 (12.9%) non-Swiss women. Of the population in the municipality 1,589 or about 27.3% were born