 The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was a decrease of 10 and the non-Swiss population change was a decrease of 5 people.This represents a population growth rate of -5.3%.The age distribution, , in Miglieglia is; 39 children or 14.3% of the population are between 0 and 9 years old and 19 teenagers or 7.0% are between 10 and 19.