last 10 years (1997–2007) the population has changed at a rate of -13.6%. Most of the population () speaks German(97.9%), with French being second most common ( 0.7%) and Portuguese being third ( 0.5%). , the gender distribution of the population was 48.1% male and 51.9% female. The population was made up of 182 Swiss men (45.4% of the population), and 11 (2.7%) non-Swiss men. There were 201 Swiss women (50.1%), and 7 (1.7%) non-Swiss women. In there was 1 live birth to Swiss citizens and in same time span there were 4 deaths of Swiss citizens. Ignoring immigration and emigration, the population of Swiss citizens decreased by 3 while the foreign population remained the same. There was 1 Swiss woman who emigrated from Switzerland to another country and 2 non-Swiss men who emigrated from Switzerland to another country. The total Swiss population change in 2008 (from all sources) was an increase of 5 and the non-Swiss population change was a decrease of 3 people. This represents a population growth rate of 0.5%. The age distribution, , in Raperswilen is; 45 children or 11.2% of the population are between 0 and 9 years old and 51 teenagers or 12.7% are between 10 and 19. Of the adult population, 43 people or 10.7% of the population are between 20 and 29 years old. 46 people or 11.4% are between 30 and 39, 68 people or 16.9% are between 40 and 49, and 64 people or 15.9% are between 50 and 59. The senior population distribution is 43 people or 10.7% of the population are between 60 and 69 years old, 24 people or 6.0% are between 70 and 79, there are 17 people or 4.2% who are between 80 and 89,and there is 1 person who is between 90 and older. , there were 146 private households in the municipality, and an average of 2.8 persons per household. there were 64 single family homes (or 85.3% of the total) out of a total of 75 inhabited buildings. There were 8 two family buildings (10.7%), 2 three family buildings (2.7%) and 1 multi-family buildings (or 1.3%). There were 98 (or 23.0%) persons who were part of a couple without children, and 256 (or 60.1%) who were part of a couple with children. There were 28 (or 6.6%) people who lived in single parent home, while there are 3 persons who were adult