the foreign population increased by 1. There were 4 Swiss men and 1 Swiss woman who emigrated from Switzerland. At the same time, there were 2 non-Swiss men and 3 non-Swiss women who immigrated from another country to Switzerland. The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was a decrease of 7 and the non-Swiss population increased by 5 people. This represents a population growth rate of -0.5%. The age distribution, , in Cottens is; 61 children or 13.8% of the population are between 0 and 9 years old and 60 teenagers or 13.6% are between 10 and 19. Of the adult population, 45 people or 10.2% of the population are between 20 and 29 years old. 75 people or 17.0% are between 30 and 39, 70 people or 15.9% are between 40 and 49, and 43 people or 9.8% are between 50 and 59. The senior population distribution is 56 people or 12.7% of the population are between 60 and 69 years old, 19 people or 4.3% are between 70 and 79, there are 10 people or 2.3% who are between 80 and 89, and there are 2 people or 0.5% who are 90 and older. , there were 121 people who were single and never married in the municipality. There were 185 married individuals, 19 widows or widowers and 18 individuals who are divorced. , there were 139 private households in the municipality, and an average of 2.5 persons per household. There were 36 households that consist of only one person and 10 households with five or more people. Out of a total of 139 households that answered this question, 25.9% were households made up of just one person and there was 1 adult who lived with their parents. Of the rest of the households, there are 45 married couples without children, 53 married couples with children There were 2 single parents with a child or children. There were 2 households that were made up of unrelated people. there were 51 single family homes (or 56.7% of the total) out of a total of 90 inhabited buildings. There were 14 multi-family buildings (15.6%), along with 20 multi-purpose buildings that were mostly used for housing (22.2%) and 5 other use buildings (commercial or industrial) that also had some housing (5.6%). Of the single family homes 11 were built before 1919, while 3