 The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was an increase of 3 and the non-Swiss population change was an increase of 1 people.This represents a population growth rate of 1.2%.The age distribution, , in Isorno is; 31 children or 8.8% of the population are between 0 and 9 years old and 28 teenagers or 8.0% are between 10 and 19.