 The age distribution, , in Widnau is; 1,041 children or 13.9% of the population are between 0 and 9 years old and 990 teenagers or 13.3% are between 10 and 19.Of the adult population, 942 people or 12.6% of the population are between 20 and 29 years old.1,336 people or 17.9% are between 30 and 39, 1,031 people or 13.8% are between 40 and 49, and 905 people or 12.1% are between 50 and 59.