 Of the population in the municipality 1,280 or about 34.7% were born in Vétroz and lived there in 2000.There were 1,228 or 33.3% who were born in the same canton, while 374 or 10.1% were born somewhere else in Switzerland, and 654 or 17.7% were born outside of Switzerland.The age distribution of the population () is children and teenagers (0–19 years old) make up 26.4% of the population, while adults (20–64 years old) make up 60.7% and seniors (over 64 years old) make up 13%.