The age distribution, , in Prévonloup is; 17 children or 12.0% of the population are between 0 and 9 years old and 22 teenagers or 15.5% are between 10 and 19. Of the adult population, 17 people or 12.0% of the population are between 20 and 29 years old. 17 people or 12.0% are between 30 and 39, 13 people or 9.2% are between 40 and 49, and 17 people or 12.0% are between 50 and 59. The senior population distribution is 17 people or 12.0% of the population are between 60 and 69 years old, 13 people or 9.2% are between 70 and 79, there are 9 people or 6.3% who are between 80 and 89.