Data collection through the Internet ended on May 15, 2012
The 2011 Population and Housing Census is proposed as an operation combining:
The pre-census file
This is obtained from the Register and from statistical information and administrative sources (vital statistics, Social Security, Tax Agency); it will allow having enough information available to carry out the population count and the analysis of its structure.
The population survey
This has a dual objective. Firstly, there will be the objective of providing the census characteristics of the population for those variables for which not enough information is available in the pre-census file. Secondly, its data will enable completing the population count.
The building census
This also has several objectives. The first of them is to ensure the comprehensiveness of the listing of buildings derived from the pre-census file. To this end, a complete itinerary is expected wherever necessary. In said itinerary, the variables will be collected from the buildings when previous information is not available on them, all the dwellings and locales will be listed, and the geo-referencing of the buildings will be completed.