The age distribution, , in Assens is; 130 children or 13.0% of the population are between 0 and 9 years old and 132 teenagers or 13.2% are between 10 and 19. Of the adult population, 114 people or 11.4% of the population are between 20 and 29 years old. 141 people or 14.1% are between 30 and 39, 166 people or 16.6% are between 40 and 49, and 127 people or 12.7% are between 50 and 59. The senior population distribution is 104 people or 10.4% of the population are between 60 and 69 years old, 61 people or 6.1% are between 70 and 79, there are 21 people or 2.1% who are between 80 and 89, and there is 1 person who is 90 and older.