The age distribution, , in Bussigny is; 889 children or 11.1% of the population are 9 years old or younger and 1,006 children or 12.5% are between 10 and 19. Of the adult population, 1,116 people or 13.9% of the population are between 20 and 29 years old, 1,282 people or 16.0% are between 30 and 39, 1,336 people or 16.6% are between 40 and 49, and 1,031 people or 12.8% are between 50 and 59. The senior population distribution is 802 people or 10.0% of the population are between 60 and 69 years old, 384 people or 4.8% are between 70 and 79, 159 people or 2.0% who are between 80 and 89, and there are 28 people or 0.3% who are 90 and older.