The age distribution, , in Senarclens is; 40 children or 10.9% of the population are between 0 and 9 years old and 49 teenagers or 13.3% are between 10 and 19. Of the adult population, 44 people or 12.0% of the population are between 20 and 29 years old. 51 people or 13.9% are between 30 and 39, 56 people or 15.2% are between 40 and 49, and 49 people or 13.3% are between 50 and 59. The senior population distribution is 40 people or 10.9% of the population are between 60 and 69 years old, 29 people or 7.9% are between 70 and 79, there are 10 people or 2.7% who are between 80 and 89.