The age distribution, , in Osco is; 10 children or 7.6% of the population are between 0 and 9 years old and 7 teenagers or 5.3% are between 10 and 19. Of the adult population, 11 people or 8.3% of the population are between 20 and 29 years old. 29 people or 22.0% are between 30 and 39, 9 people or 6.8% are between 40 and 49, and 12 people or 9.1% are between 50 and 59. The senior population distribution is 27 people or 20.5% of the population are between 60 and 69 years old, 9 people or 6.8% are between 70 and 79, there are 18 people or 13.6% who are over 80.