 The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was a decrease of 6 and the non-Swiss population change was an increase of 3 people.This represents a population growth rate of -2.2%.The age distribution, , in Sant'Abbondio is; 14 children or 10.2% of the population are between 0 and 9 years old and 5 teenagers or 3.6% are between 10 and 19.