The information query system for the Population and Housing Census 1991 on Internet and the comparison of the Census 1991/2001. The latter is integrated into the query system of the 2001 Census, and the groups eligible to apply that comparison are: Residents in family dwellings, Employed 16 and over, All buildings, buildings Destined mainly for dwellings, All family dwellings, and Conventional main family dwellings.

Welcome to the information query system for the Population and Housing Censuses on Internet.

Unlike a classical query system in which a determined list of tables is shown, this system offers an unlimited set of tables. It is sufficient to follow four simple steps for which we offer preliminary guidelines. If you require more information consult the tutorial.

- Step 1. What do you wish to do? we recommend that you choose "create tables". The section "see list of tables" contains some of the most commonly consulted tables but the large majority of information that the system offers is only visible from the first option. - Step 2. Choose the geographical scope of the query. Currently the lowest level is municipal. - Step 3. Choose the group. Information is offered on persons, buildings, housing, premises, family nuclei and households. If you want to know how to interpret data from households and family nuclei, see the explanatory note. - Step 4. You may create the structure of the table (recommended) or introduce filters for example, only to give information for women or some determined ages. If you wish you may change the unit of measurement in which the data is presented to obtain rates, percentages, indices, etc or access the personal queries screen which presents all the existing information: the complete list of variables and measurement units and especially, specific relationship data of foreigners, persons over 64, migrants, employed and students. With the Advanced functionalities, you will be able to make queries, filters and customized aggregations.