 The age distribution, , in St. Gallenkappel is; 255 children or 14.8% of the population are between 0 and 9 years old and 286 teenagers or 16.6% are between 10 and 19.Of the adult population, 193 people or 11.2% of the population are between 20 and 29 years old.274 people or 15.9% are between 30 and 39, 245 people or 14.3% are between 40 and 49, and 188 people or 10.9% are between 50 and 59.