sentences:  Of the population in the municipality, 168 or about 30.3% were born in Chénens and lived there in 2000.There were 267 or 48.2% who were born in the same canton, while 75 or 13.5% were born somewhere else in Switzerland, and 34 or 6.1% were born outside of Switzerland., children and teenagers (0–19 years old) make up 30.7% of the population, while adults (20–64 years old) make up 60.8% and seniors (over 64 years old) make up 8.5%.