 The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was an increase of 19 and the non-Swiss population change was an increase of 51 people.This represents a population growth rate of 13.3%.The age distribution, , in Sigirino is; 50 children or 8.4% of the population are between 0 and 9 years old and 61 teenagers or 10.2% are between 10 and 19.