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. The senior population distribution is 330 people or 10.1% of the population are between 60 and 69 years old, 213 people or 6.5% are between 70 and 79, there are 131 people or 4.0% who are between 80 and 89,and there are 14 people or 0.4% who are 90 and older.