The age distribution, , in Fehren is; 43 children or 8.4% of the population are between 0 and 6 years old and 67 teenagers or 13.2% are between 7 and 19. Of the adult population, 30 people or 5.9% of the population are between 20 and 24 years old. 176 people or 34.6% are between 25 and 44, and 127 people or 25.0% are between 45 and 64. The senior population distribution is 53 people or 10.4% of the population are between 65 and 79 years old and there are 13 people or 2.6% who are over 80.