 The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was an increase of 13 and the non-Swiss population change was an increase of 12 people.This represents a population growth rate of 1.4%.The age distribution, , in Sonvico is; 183 children or 9.9% of the population are between 0 and 9 years old and 209 teenagers or 11.3% are between 10 and 19.