Zuchwil is a municipality in the district of Wasseramt in the canton of Solothurn in Switzerland. Zuchwil is first mentioned in 1052 as Zuchwile. Zuchwil has an area, , of . Of this area, or 24.8% is used for agricultural purposes, while or 19.2% is forested. Of the rest of the land, or 52.9% is settled (buildings or roads), or 3.9% is either rivers or lakes. Of the built up area, industrial buildings made up 9.3% of the total area while housing and buildings made up 21.8% and transportation infrastructure made up 13.6%. Power and water infrastructure as well as other special developed areas made up 2.6% of the area while parks, green belts and sports fields made up 5.6%. Out of the forested land, all of the forested land area is covered with heavy forests. Of the agricultural land, 19.2% is used for growing crops and 3.9% is pastures, while 1.7% is used for orchards or vine crops. All the water in the municipality is flowing water. The municipality is located in the Wasseramt district, in a triangle formed by the Aare and Emme rivers and the Bleichenberg / Birchi mountains near Solothurn. The blazon of the municipal coat of arms is Azure a Mullet of Five and a Moon increscent Or over a Mount of 3 Coupeaux Vert. Zuchwil has a population () of . , 40.1% of the population are resident foreign nationals. Over the last 10 years (1999–2009) the population has changed at a rate of -3.9%. It has changed at a rate of -0.8% due to migration and at a rate of 1.1% due to births and deaths. Most of the population () speaks German (6,842 or 76.7%), with Italian being second most common (545 or 6.1%) and Serbo-Croatian being third (384 or 4.3%). There are 73 people who speak French and 8 people who speak Romansh. the gender distribution of the population was 49.5% male and 50.5% female. The population was made up of 2,455 Swiss men (27.7% of the population) and 1,930 (21.8%) non-Swiss men. There were 2,731 Swiss women (30.8%) and 1,746 (19.7%) non-Swiss women. Of the population in the municipality 1,941 or about 21.