sentences:  Of the population in the municipality, 277 or about 37.1% were born in Bitsch and lived there in 2000.There were 329 or 44.0% who were born in the same canton, while 83 or 11.1% were born somewhere else in Switzerland, and 42 or 5.6% were born outside of Switzerland., children and teenagers (0–19 years old) make up 30.3% of the population, while adults (20–64 years old) make up 60% and seniors (over 64 years old) make up 9.8%.