The age distribution, , in Arogno is; 106 children or 10.7% of the population are between 0 and 9 years old and 125 teenagers or 12.6% are between 10 and 19. Of the adult population, 75 people or 7.5% of the population are between 20 and 29 years old. 124 people or 12.5% are between 30 and 39, 165 people or 16.6% are between 40 and 49, and 135 people or 13.6% are between 50 and 59. The senior population distribution is 106 people or 10.7% of the population are between 60 and 69 years old, 91 people or 9.2% are between 70 and 79, there are 67 people or 6.7% who are over 80.