 Of the population in the municipality, 479 or about 50.2% were born in St. Silvester and lived there in 2000.There were 306 or 32.0% who were born in the same canton, while 99 or 10.4% were born somewhere else in Switzerland, and 35 or 3.7% were born outside of Switzerland., children and teenagers (0–19 years old) make up 26.8% of the population, while adults (20–64 years old) make up 64.9% and seniors (over 64 years old) make up 8.3%.