The age distribution, , in Vaux-sur-Morges is; 27 children or 15.7% of the population are between 0 and 9 years old and 29 teenagers or 16.9% are between 10 and 19. Of the adult population, 12 people or 7.0% of the population are between 20 and 29 years old. 13 people or 7.6% are between 30 and 39, 32 people or 18.6% are between 40 and 49, and 25 people or 14.5% are between 50 and 59. The senior population distribution is 20 people or 11.6% of the population are between 60 and 69 years old, 11 people or 6.4% are between 70 and 79, there are 3 people or 1.7% who are between 80 and 89.