The age distribution, , in Steinach is; 341 children or 11.8% of the population are between 0 and 9 years old and 313 teenagers or 10.8% are between 10 and 19. Of the adult population, 331 people or 11.4% of the population are between 20 and 29 years old. 531 people or 18.3% are between 30 and 39, 396 people or 13.7% are between 40 and 49, and 380 people or 13.1% are between 50 and 59. The senior population distribution is 298 people or 10.3% of the population are between 60 and 69 years old, 208 people or 7.2% are between 70 and 79, there are 92 people or 3.2% who are between 80 and 89, and there are 9 people or 0.3% who are between 90 and 99.