 The age distribution, , in Marbach is; 283 children or 15.9% of the population are between 0 and 9 years old and 301 teenagers or 16.9% are between 10 and 19.Of the adult population, 188 people or 10.6% of the population are between 20 and 29 years old.297 people or 16.7% are between 30 and 39, 249 people or 14.0% are between 40 and 49, and 192 people or 10.8% are between 50 and 59.