The age distribution, , in Ormont-Dessous is; 91 children or 9.1% of the population are between 0 and 9 years old and 122 teenagers or 12.2% are between 10 and 19. Of the adult population, 81 people or 8.1% of the population are between 20 and 29 years old. 139 people or 13.8% are between 30 and 39, 139 people or 13.8% are between 40 and 49, and 153 people or 15.2% are between 50 and 59. The senior population distribution is 135 people or 13.4% of the population are between 60 and 69 years old, 70 people or 7.0% are between 70 and 79,there are 58 people or 5.8% who are 80 and 89, and there are 16 people or 1.6% who are 90 and older.