The age distribution, , in Weinfelden is; 927 children or 9.1% of the population are between 0 and 9 years old and 1,130 teenagers or 11.1% are between 10 and 19. Of the adult population, 1,549 people or 15.3% of the population are between 20 and 29 years old. 1,347 people or 13.3% are between 30 and 39, 1,464 people or 14.4% are between 40 and 49, and 1,304 people or 12.9% are between 50 and 59. The senior population distribution is 1,008 people or 9.9% of the population are between 60 and 69 years old, 823 people or 8.1% are between 70 and 79, there are 508 people or 5.0% who are between 80 and 89, and there are 81 people or 0.8% who are 90 and older.