The age distribution, , in Wiliberg is; 20 children or 12.5% of the population are between 0 and 9 years old and 20 teenagers or 12.5% are between 10 and 19. Of the adult population, 15 people or 9.4% of the population are between 20 and 29 years old. 18 people or 11.3% are between 30 and 39, 32 people or 20.0% are between 40 and 49, and 28 people or 17.5% are between 50 and 59. The senior population distribution is 11 people or 6.9% of the population are between 60 and 69 years old, 10 people or 6.3% are between 70 and 79, there are 4 people or 2.5% who are between 80 and 89,and there are 2 people or 1.3% who are 90 and older.