The age distribution, , in Perroy is; 172 children or 13.0% of the population are between 0 and 9 years old and 149 teenagers or 11.3% are between 10 and 19. Of the adult population, 146 people or 11.1% of the population are between 20 and 29 years old. 204 people or 15.5% are between 30 and 39, 221 people or 16.7% are between 40 and 49, and 168 people or 12.7% are between 50 and 59. The senior population distribution is 175 people or 13.3% of the population are between 60 and 69 years old, 43 people or 3.3% are between 70 and 79, there are 34 people or 2.6% who are between 80 and 89, and there are 8 people or 0.6% who are 90 and older.