Trey is a municipality in the district of Broye-Vully in the canton of Vaud in Switzerland. History Trey is first mentioned around 1142– as Treis. Geography Trey has an area, , of . Of this area, or 71.1% is used for agricultural purposes, while or 17.6% is forested. Of the rest of the land, or 9.4% is settled (buildings or roads), or 1.3% is either rivers or lakes. Of the built up area, housing and buildings made up 3.4% and transportation infrastructure made up 5.5%. Out of the forested land, all of the forested land area is covered with heavy forests. Of the agricultural land, 50.9% is used for growing crops and 16.0% is pastures, while 4.2% is used for orchards or vine crops. All the water in the municipality is flowing water. The municipality was part of the Payerne District until it was dissolved on 31 August 2006, and Trey became part of the new district of Broye-Vully. The municipality is located on the border with the Canton of Fribourg. It consists of the village of Trey and the hamlet of Granges-sous-Trey. Coat of arms The blazon of the municipal coat of arms is Per pale Argent and Gules, a chevron between three shells two and one counterchanged. Demographics Trey has a population () of . , 10.9% of the population are resident foreign nationals. Over the last 10 years (1999–2009 ) the population has changed at a rate of 11.6%. It has changed at a rate of 13.4% due to migration and at a rate of -0.9% due to births and deaths. Most of the population () speaks French (204 or 87.9%), with German being second most common (24 or 10.3%) and Danish being third (3 or 1.3%). The age distribution, , in Trey is; 35 children or 14.0% of the population are between 0 and 9 years old and 31 teenagers or 12.4% are between 10 and 19. Of the adult population, 28 people or 11.2% of the population are between 20 and 29 years old. 24 people or 9.6% are between 30 and 39, 48 people or 19.2% are between 40 and 49, and 32 people or 12.8% are between 50 and 59. The senior population distribution is 26 people or 10.4% of the population are between 60 and 69 years old, 12 people or 4.8% are between 70 and 79, there are 12 people or