The age distribution, , in Fontanezier is; 2 children or 3.4% of the population are between 0 and 9 years old and 8 teenagers or 13.8% are between 10 and 19. Of the adult population, 7 people or 12.1% of the population are between 20 and 29 years old. 6 people or 10.3% are between 30 and 39, 7 people or 12.1% are between 40 and 49, and 7 people or 12.1% are between 50 and 59. The senior population distribution is 10 people or 17.2% of the population are between 60 and 69 years old, 6 people or 10.3% are between 70 and 79, there are 3 people or 5.2% who are between 80 and 89, and there are 2 people or 3.4% who are 90 and older.