The age distribution, , in Tenniken is; 56 children or 6.3% of the population are between 0 and 6 years old and 117 teenagers or 13.2% are between 7 and 19. Of the adult population, 109 people or 12.3% of the population are between 20 and 29 years old. 114 people or 12.9% are between 30 and 39, 134 people or 15.1% are between 40 and 49, and 236 people or 26.6% are between 50 and 64. The senior population distribution is 94 people or 10.6% of the population are between 65 and 79 years old and there are 26 people or 2.9% who are over 80.