Of the population in the municipality 492 or about 45.5% were born in Charrat and lived there in 2000. There were 313 or 29.0% who were born in the same canton, while 78 or 7.2% were born somewhere else in Switzerland, and 174 or 16.1% were born outside of Switzerland. The age distribution of the population () is children and teenagers (0–19 years old) make up 28.2% of the population, while adults (20–64 years old) make up 55.4% and seniors (over 64 years old) make up 16.4%.