the Latin ara or altar. But in common usage this origin has been changed to the Italian arare or to plow, leading to the plow on the coat of arms. Demographics Aranno has a population () of . , 12.6% of the population are resident foreign nationals. Over the last 10 years (1997–2007) the population has changed at a rate of 27.3%. Most of the population () speaks Italian (79.4%), with German being second most common (16.1%) and French being third (1.9%). Of the Swiss national languages (), 43 speak German, 5 people speak French, 212 people speak Italian, and 1 person speaks Romansh. The remainder (6 people) speak another language. , the gender distribution of the population was 46.9% male and 53.1% female. The population was made up of 130 Swiss men (40.9% of the population), and 19 (6.0%) non-Swiss men. There were 148 Swiss women (46.5%), and 21 (6.6%) non-Swiss women. In there were 6 live births to Swiss citizens and were 2 deaths of Swiss citizens. Ignoring immigration and emigration, the population of Swiss citizens increased by 4 while the foreign population remained the same. There was 1 Swiss woman who emigrated from Switzerland and 1 non-Swiss woman who immigrated from another country to Switzerland. The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was an increase of 1 and the non-Swiss population change was a decrease of 1 people. This represents a population growth rate of 0.0%. The age distribution, , in Aranno is; 36 children or 11.3% of the population are between 0 and 9 years old and 34 teenagers or 10.7% are between 10 and 19. Of the adult population, 29 people or 9.1% of the population are between 20 and 29 years old. 40 people or 12.6% are between 30 and 39, 69 people or 21.7% are between 40 and 49, and 39 people or 12.3% are between 50 and 59. The senior population distribution is 41 people or 12.9% of the population are between 60 and 69 years old, 21 people or 6.6% are between 70 and 79, there are 9 people or 2.8% who are over 80. , there were 115 private households in the municipality, and an average of 2.3 persons per household. there were 131 single family homes (or 84.0% of the total) out of a total of 156 inhabited buildings. There were