 The age distribution, , in Jonschwil is; 462 children or 14.7% of the population are between 0 and 9 years old and 536 teenagers or 17.1% are between 10 and 19.Of the adult population, 369 people or 11.8% of the population are between 20 and 29 years old.534 people or 17.0% are between 30 and 39, 499 people or 15.9% are between 40 and 49, and 385 people or 12.3% are between 50 and 59.