 The total Swiss population change in 2008 (from all sources) was a decrease of 14 and the non-Swiss population change was a decrease of 10 people.This represents a population growth rate of -2.6%.The age distribution, , in Giornico is; 56 children or 6.5% of the population are between 0 and 9 years old and 83 teenagers or 9.6% are between 10 and 19.