Cazis has a population (as of ) of . , 14.8% of the population was made up of foreign nationals. Over the last 10 years the population has grown at a rate of 7.4%. , the gender distribution of the population was 48.2% male and 51.8% female. The age distribution, , in Cazis is; 180 people or 11.4% of the population are between 0 and 9 years old. 86 people or 5.5% are 10 to 14, and 126 people or 8.0% are 15 to 19. Of the adult population, 160 people or 10.2% of the population are between 20 and 29 years old. 274 people or 17.4% are 30 to 39, 255 people or 16.2% are 40 to 49, and 199 people or 12.6% are 50 to 59. The senior population distribution is 131 people or 8.3% of the population are between 60 and 69 years old, 87 people or 5.5% are 70 to 79, there are 67 people or 4.3% who are 80 to 89, and there are 10 people or 0.6% who are 90 to 99. In the
2007 federal election the most popular party was the
SVP which received 33.3% of the vote. The next three most popular parties were the
CVP (29.6%), the
SPS (22.3%) and the
FDP (13.4%). ==Languages==