The age distribution, , in Villars-sous-Yens is; 71 children or 12.2% of the population are between 0 and 9 years old and 94 teenagers or 16.2% are between 10 and 19. Of the adult population, 59 people or 10.1% of the population are between 20 and 29 years old. 76 people or 13.1% are between 30 and 39, 114 people or 19.6% are between 40 and 49, and 70 people or 12.0% are between 50 and 59. The senior population distribution is 50 people or 8.6% of the population are between 60 and 69 years old, 34 people or 5.8% are between 70 and 79, there are 11 people or 1.9% who are between 80 and 89, and there are 3 people or 0.5% who are 90 and older.