Vétroz is a municipality in the district of Conthey in the canton of Valais in Switzerland. Vétroz has an area, , of . Of this area, or 47.6% is used for agricultural purposes, while or 19.7% is forested. Of the rest of the land, or 18.3% is settled (buildings or roads), or 2.4% is either rivers or lakes and or 11.5% is unproductive land. Of the built up area, industrial buildings made up 2.0% of the total area while housing and buildings made up 8.2% and transportation infrastructure made up 6.3%. Power and water infrastructure as well as other special developed areas made up 1.1% of the area Out of the forested land, 16.6% of the total land area is heavily forested and 1.5% is covered with orchards or small clusters of trees. Of the agricultural land, 17.0% is used for growing crops and 3.3% is pastures, while 26.9% is used for orchards or vine crops. All the water in the municipality is flowing water. Of the unproductive areas, 2.1% is unproductive vegetation and 9.4% is too rocky for vegetation. In 1880 the municipality was formed when it became independent from Conthey. The blazon of the municipal coat of arms is Gules, a Vine Branch Vert fructed Or, in Chief Azure between two Mullets of Five Or a Cross pommy of the same. Vétroz has a population () of . , 23.0% of the population are resident foreign nationals. Over the last 10 years (1999–2009 ) the population has changed at a rate of 15%. It has changed at a rate of 16% due to migration and at a rate of 4% due to births and deaths. Most of the population () speaks French (3,253 or 88.1%) as their first language, German is the second most common (121 or 3.3%) and Portuguese is the third (117 or 3.2%). There are 108 people who speak Italian. the gender distribution of the population was 49.3% male and 50.7% female. The population was made up of 1,667 Swiss men (37.0% of the population) and 552 (12.3%) non-Swiss men. There were 1,788 Swiss women (39.7%) and 497 (11.0%) non-Swiss women. Of the population in the municipality 1,280 or about 34.