Demographics
Valcolla has a population (as of December 2011) of 629. As of 2008, 7.7% of the population are resident foreign nationals. Over the last 10 years (1997–2007) the population has changed at a rate of 16%.
Most of the population (as of 2000) speaks Italian (88.5%), with German being second most common (8.8%) and French being third (1.3%). Of the Swiss national languages (as of 2000), 49 speak German, 7 people speak French, 494 people speak Italian, and 1 person speaks Romansh. The remainder (7 people) speak another language.
As of 2008, the gender distribution of the population was 49.1% male and 50.9% female. The population was made up of 278 Swiss men (44.9% of the population), and 26 (4.2%) non-Swiss men. There were 292 Swiss women (47.2%), and 23 (3.7%) non-Swiss women.
In 2008 there were 4 live births to Swiss citizens and were 7 deaths of Swiss citizens and 1 non-Swiss citizen death. Ignoring immigration and emigration, the population of Swiss citizens decreased by 3 while the foreign population decreased by 1. There were 2 Swiss men who immigrated back to Switzerland. At the same time, there was 1 non-Swiss man and 4 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 31 and the non-Swiss population change was an increase of 1 people. This represents a population growth rate of -4.8%.
The age distribution, as of 2009, in Valcolla is; 50 children or 8.1% of the population are between 0 and 9 years old and 53 teenagers or 8.6% are between 10 and 19. Of the adult population, 63 people or 10.2% of the population are between 20 and 29 years old. 69 people or 11.1% are between 30 and 39, 119 people or 19.2% are between 40 and 49, and 81 people or 13.1% are between 50 and 59. The senior population distribution is 68 people or 11.0% of the population are between 60 and 69 years old, 68 people or 11.0% are between 70 and 79, there are 48 people or 7.8% who are over 80.
As of 2000, there were 245 private households in the municipality, and an average of 2.1 persons per household. In 2000 there were 466 single family homes (or 92.1% of the total) out of a total of 506 inhabited buildings. There were 29 two family buildings (5.7%) and 4 multi-family buildings (0.8%). There were also 7 buildings in the municipality that were multipurpose buildings (used for both housing and commercial or another purpose).
The vacancy rate for the municipality, in 2008, was 0%. In 2000 there were 541 apartments in the municipality. The most common apartment size was the 5 room apartment of which there were 157. There were 38 single room apartments and 157 apartments with five or more rooms. Of these apartments, a total of 245 apartments (45.3% of the total) were permanently occupied, while 294 apartments (54.3%) were seasonally occupied and 2 apartments (0.4%) were empty. As of 2007, the construction rate of new housing units was 4.8 new units per 1000 residents.
The historical population is given in the following chart:
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