 This represents a population growth rate of -2.5%.The age distribution, , in Orselina is; 44 children or 5.7% of the population are between 0 and 9 years old and 54 teenagers or 7.0% are between 10 and 19.Of the adult population, 62 people or 8.1% of the population are between 20 and 29 years old.