The age distribution, , in Biel-Benken is; 230 children or 7.4% of the population are between 0 and 6 years old and 463 teenagers or 14.8% are between 7 and 19. Of the adult population, 270 people or 8.6% of the population are between 20 and 29 years old. 301 people or 9.6% are between 30 and 39, 573 people or 18.3% are between 40 and 49, and 706 people or 22.6% are between 50 and 64. The senior population distribution is 467 people or 15.0% of the population are between 65 and 79 years old and there are 113 people or 3.6% who are over 80.