The age distribution, , in Wangen bei Olten is; 301 children or 6.6% of the population are between 0 and 6 years old and 695 teenagers or 15.2% are between 7 and 19. Of the adult population, 252 people or 5.5% of the population are between 20 and 24 years old. 1,410 people or 30.8% are between 25 and 44, and 1,083 people or 23.7% are between 45 and 64. The senior population distribution is 599 people or 13.1% of the population are between 65 and 79 years old and there are 239 people or 5.2% who are over 80.