The age distribution, , in Hunzenschwil is; 282 children or 9.4% of the population are between 0 and 9 years old and 329 teenagers or 10.9% are between 10 and 19. Of the adult population, 456 people or 15.2% of the population are between 20 and 29 years old. 456 people or 15.2% are between 30 and 39, 499 people or 16.6% are between 40 and 49, and 416 people or 13.8% are between 50 and 59. The senior population distribution is 309 people or 10.3% of the population are between 60 and 69 years old, 156 people or 5.2% are between 70 and 79, there are 90 people or 3.0% who are between 80 and 89,and there are 15 people or 0.5% who are 90 and older.