Corserey (; , locally ) is a former municipality in the district of Sarine in the canton of Fribourg in Switzerland. On 1 January 2020, the former municipalities of Corserey, Noréaz, and Prez-vers-Noréaz merged to form the new municipality of Prez. History Corserey is first mentioned around 1150-62 as Corserei. Geography As of 2013, Corserey has an area of . Of this area, or 72.0% is used for agricultural purposes, while or 19.5% is forested. Of the rest of the land, or 7.9% is settled (buildings or roads). Of the built up area, housing and buildings made up 5.2% and transportation infrastructure made up 2.0%. Out of the forested land, 98.5% of the forested land area is covered with heavy forests. Of the agricultural land, 47.5% is used for growing crops and 23.3% is pastures, while 1.2% is used for orchards or vine crops. The municipality is located in the Sarine district. Coat of arms The blazon of the municipal coat of arms is Quartered Gules and Azure. Demographics Corserey has a population () of . As of 2008, 2.8% of the population are resident foreign nationals. Over the last 10 years (2000–2010), the population has changed at a rate of 13.5%. Migration accounted for 4.3%, while births and deaths accounted for 7.8%. Most of the population () speaks French (254 or 96.9%) as their first language, German is the second most common (4 or 1.5%), and Italian is the third (3 or 1.1%). As of 2008, the population was 49.5% male and 50.5% female. The population was made up of 151 Swiss men (47.9% of the population) and 5 (1.6%) non-Swiss men. There were 155 Swiss women (49.2%) and 4 (1.3%) non-Swiss women. Of the population in the municipality, 104 or about 39.7% were born in Corserey and lived there in 2000. There were 107 or 40.8% who were born in the same canton, while 36 or 13.7% were born somewhere else in Switzerland, and 14 or 5.3% were born outside of Switzerland. As of 2000, children and teenagers (0–19 years old) make up 29% of the population, while adults (20–64 years old) make up 61.8%, and seniors (over 64 years old) make up 9.2%. As of 2000, there were 118 people who were single and never married in the municipality. There were 127 married individuals, 7 widows or widowers, and 10 individuals who were divorced. As of 2000,