of Swiss citizens decreased by 1 while the foreign population remained the same. The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was a decrease of 1 and the non-Swiss population remained the same. This represents a population growth rate of -1.9%. The age distribution, , in Bosco/Gurin is; 2 children or 3.7% of the population are between 0 and 9 years old and 5 teenagers or 9.3% are between 10 and 19. Of the adult population, 4 people or 7.4% of the population are between 20 and 29 years old. 10 people or 18.5% are between 30 and 39, 9 people or 16.7% are between 40 and 49, and 10 people or 18.5% are between 50 and 59. The senior population distribution is 8 people or 14.8% of the population are between 60 and 69 years old, 4 people or 7.4% are between 70 and 79, there are 2 people or 3.7% who are over 80. , there were 37 people who were single and never married in the municipality. There were 27 married individuals, 4 widows or widowers and 3 individuals who are divorced. , there were 35 private households in the municipality, and an average of 1.9 persons per household. There were 16 households that consist of only one person and 3 households with five or more people. Out of a total of 37 households that answered this question, 43.2% were households made up of just one person. Of the rest of the households, there are 7 married couples without children, 8 married couples with children. There were 2 single parents with a child or children. There were 2 households that were made up unrelated people and 2 households that were made some sort of institution or another collective housing. there were 99 single family homes (or 84.6% of the total) out of a total of 117 inhabited buildings. There were 10 multi-family buildings (8.5%), along with 2 multi-purpose buildings that were mostly used for housing (1.7%) and 6 other use buildings (commercial or industrial) that also had some housing (5.1%). Of the single family homes 7 were built before 1919, while 4 were built between 1990 and 2000. The greatest number of single family homes (68) were built between 1919 and 1945. there were 140 apartments in the municipality. The most common apartment size was 4 rooms of which there