The age distribution, , in Reitnau is; 150 children or 12.7% of the population are between 0 and 9 years old and 164 teenagers or 13.8% are between 10 and 19. Of the adult population, 142 people or 12.0% of the population are between 20 and 29 years old. 154 people or 13.0% are between 30 and 39, 227 people or 19.2% are between 40 and 49, and 129 people or 10.9% are between 50 and 59. The senior population distribution is 101 people or 8.5% of the population are between 60 and 69 years old, 78 people or 6.6% are between 70 and 79, there are 34 people or 2.9% who are between 80 and 89,and there are 6 people or 0.5% who are 90 and older.