 The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was a decrease of 2 and the non-Swiss population change was a decrease of 4 people.This represents a population growth rate of -0.8%.The age distribution, , in San Nazzaro is; 50 children or 7.2% of the population are between 0 and 9 years old and 62 teenagers or 8.9% are between 10 and 19.