 The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was an increase of 30 and the non-Swiss population increased by 27 people.This represents a population growth rate of 4.5%.The age distribution, , in Thürnen is; 87 children or 6.4% of the population are between 0 and 6 years old and 191 teenagers or 14.0% are between 7 and 19.