The age distribution, , in Échallens is; 651 children or 12.6% of the population are between 0 and 9 years old and 761 teenagers or 14.8% are between 10 and 19. Of the adult population, 651 people or 12.6% of the population are between 20 and 29 years old. 708 people or 13.8% are between 30 and 39, 930 people or 18.1% are between 40 and 49, and 605 people or 11.8% are between 50 and 59. The senior population distribution is 464 people or 9.0% of the population are between 60 and 69 years old, 242 people or 4.7% are between 70 and 79, there are 113 people or 2.2% who are between 80 and 89, and there are 22 people or 0.4% who are 90 and older.