The age distribution, , in Schmerikon is; 365 children or 11.5% of the population are between 0 and 9 years old and 420 teenagers or 13.2% are between 10 and 19. Of the adult population, 471 people or 14.8% of the population are between 20 and 29 years old. 494 people or 15.5% are between 30 and 39, 459 people or 14.4% are between 40 and 49, and 435 people or 13.7% are between 50 and 59. The senior population distribution is 262 people or 8.2% of the population are between 60 and 69 years old, 177 people or 5.6% are between 70 and 79, there are 79 people or 2.5% who are between 80 and 89, and there are 20 people or 0.6% who are between 90 and 99.