 The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was a decrease of 11 and the non-Swiss population change was a decrease of 0 people.This represents a population growth rate of -1.5%.The age distribution, , in Tegna is; 68 children or 9.2% of the population are between 0 and 9 years old and 81 teenagers or 10.9% are between 10 and 19.