 The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was an increase of 3 and the non-Swiss population change was an increase of 10 people.This represents a population growth rate of 1.7%.The age distribution, , in Rovio is; 68 children or 9.0% of the population are between 0 and 9 years old and 75 teenagers or 10.0% are between 10 and 19.