Demographics
Bettens has a population (as of December 2011) of 386. As of 2008, 9.8% of the population are resident foreign nationals. Over the last 10 years (1999–2009 ) the population has changed at a rate of 16.1%. It has changed at a rate of 8.4% due to migration and at a rate of 8% due to births and deaths.
Most of the population (as of 2000) speaks French (311 or 94.2%), with German being second most common (14 or 4.2%) and Italian being third (4 or 1.2%).
Of the population in the municipality 99 or about 30.0% were born in Bettens and lived there in 2000. There were 147 or 44.5% who were born in the same canton, while 41 or 12.4% were born somewhere else in Switzerland, and 37 or 11.2% were born outside of Switzerland.
In 2008 there was 1 live birth to Swiss citizens and 1 death of a Swiss citizen. Ignoring immigration and emigration, the population of Swiss citizens remained the same while the foreign population remained the same. 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 decreased by 5 people. This represents a population growth rate of -0.6%.
The age distribution, as of 2009, in Bettens is; 46 children or 13.3% of the population are between 0 and 9 years old and 61 teenagers or 17.6% are between 10 and 19. Of the adult population, 32 people or 9.2% of the population are between 20 and 29 years old. 44 people or 12.7% are between 30 and 39, 82 people or 23.7% are between 40 and 49, and 38 people or 11.0% are between 50 and 59. The senior population distribution is 22 people or 6.4% of the population are between 60 and 69 years old, 10 people or 2.9% are between 70 and 79, there are 10 people or 2.9% who are between 80 and 89, and there is 1 person who is 90 and older.
As of 2000, there were 155 people who were single and never married in the municipality. There were 161 married individuals, 6 widows or widowers and 8 individuals who are divorced.
As of 2000, there were 112 private households in the municipality, and an average of 2.8 persons per household. There were 24 households that consist of only one person and 10 households with five or more people. Out of a total of 116 households that answered this question, 20.7% 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 28 married couples without children, 48 married couples with children There were 9 single parents with a child or children. There were 2 households that were made up of unrelated people and 4 households that were made up of some sort of institution or another collective housing.
In 2000 there were 47 single family homes (or 56.0% of the total) out of a total of 84 inhabited buildings. There were 13 multi-family buildings (15.5%), along with 19 multi-purpose buildings that were mostly used for housing (22.6%) and 5 other use buildings (commercial or industrial) that also had some housing (6.0%). Of the single family homes 11 were built before 1919, while 19 were built between 1990 and 2000. The most multi-family homes (6) were built before 1919 and the next most (2) were built between 1981 and 1990. There was 1 multi-family house built between 1996 and 2000.
In 2000 there were 120 apartments in the municipality. The most common apartment size was 5 rooms of which there were 27. There were 4 single room apartments and 56 apartments with five or more rooms. Of these apartments, a total of 108 apartments (90.0% of the total) were permanently occupied, while 11 apartments (9.2%) were seasonally occupied and one apartment was empty. As of 2009, the construction rate of new housing units was 2.9 new units per 1000 residents. The vacancy rate for the municipality, in 2010, was 0%.
The historical population is given in the following chart:
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