 The age distribution, , in Safenwil is; 300 children or 9.1% of the population are between 0 and 9 years old and 382 teenagers or 11.6% are between 10 and 19.Of the adult population, 374 people or 11.4% of the population are between 20 and 29 years old.440 people or 13.4% are between 30 and 39, 580 people or 17.7% are between 40 and 49, and 515 people or 15.7% are between 50 and 59.