 This represents a population growth rate of 0.6%.The age distribution, , in Seltisberg is; 66 children or 5.1% of the population are between 0 and 6 years old and 190 teenagers or 14.8% are between 7 and 19.Of the adult population, 134 people or 10.4% of the population are between 20 and 29 years old.