 The age distribution, , in Rheineck is; 389 children or 12.0% of the population are between 0 and 9 years old and 405 teenagers or 12.5% are between 10 and 19.Of the adult population, 383 people or 11.9% of the population are between 20 and 29 years old.492 people or 15.2% are between 30 and 39, 463 people or 14.3% are between 40 and 49, and 409 people or 12.7% are between 50 and 59.