 The age distribution, , in Ganterschwil is; 175 children or 15.8% of the population are between 0 and 9 years old and 202 teenagers or 18.2% are between 10 and 19.Of the adult population, 114 people or 10.3% of the population are between 20 and 29 years old.172 people or 15.5% are between 30 and 39, 172 people or 15.5% are between 40 and 49, and 103 people or 9.3% are between 50 and 59.