The age distribution, , in Kleinlützel is; 105 children or 8.4% of the population are between 0 and 6 years old and 187 teenagers or 15.0% are between 7 and 19. Of the adult population, 55 people or 4.4% of the population are between 20 and 24 years old. 339 people or 27.3% are between 25 and 44, and 332 people or 26.7% are between 45 and 64. The senior population distribution is 178 people or 14.3% of the population are between 65 and 79 years old and there are 47 people or 3.8% who are over 80.