Census
The Federal Population Census (German: Eidgenössische Volkszählung, French: Recensement fédéral de la population, Italian: Censimento federale della popolazione, Romansh: Dumbraziun federala dal pievel) has been carried out every 10 years starting in 1850. The census was initiated by Federal Councillor Stefano Franscini, who evaluated the data of the first census all by himself after Parliament failed to provide the necessary funds. The census is now being conducted by the Swiss Federal Statistical Office, which makes most results available on its website.
Collected data includes population data (citizenship, place of residence, place of birth, position in household, number of children, religion, languages, education, profession, place of work, etc.), household data (number of individuals living in the household, etc.), accommodation data (surface area, amount of rent paid, etc.) and building data (geocoordinates, time of construction, number of floors, etc.). Participation is compulsory and reached 99.87% of the population in 2000.
Since 2010, the population census has been carried out and analysed annually in a new format by the Federal Statistical Office (FSO). In order to ease the burden on the population, the information is primarily drawn from population registers and supplemented by sample surveys. Only a small proportion of the population (about 5%) are surveyed in writing or by telephone. The first reference day for the new census was 31 December 2010.
Read more about this topic: Demographics Of Switzerland