The age distribution, , in Bünzen is; 105 children or 10.8% of the population are between 0 and 9 years old and 135 teenagers or 13.9% are between 10 and 19. Of the adult population, 114 people or 11.8% of the population are between 20 and 29 years old. 129 people or 13.3% are between 30 and 39, 169 people or 17.5% are between 40 and 49, and 151 people or 15.6% are between 50 and 59. The senior population distribution is 87 people or 9.0% of the population are between 60 and 69 years old, 32 people or 3.3% are between 70 and 79, there are 39 people or 4.0% who are between 80 and 89,and there are 7 people or 0.7% who are 90 and older.