FAQ - answer

Question Why is the census run again in ten years time?
Answer Censuses reflect the status at a specific moment. With time, society undergoes changes and develops, making the census results lose its predicative ability; the information concerning the social-economic characteristics becomes obsolete after a certain period of time.

The 10-year period has its own historical origins. In the 140 years since the start of the so-called ”modern census” in 1869, there has only been one case in which the population census was not re-executed in 10 years. This one exception was in 1940 during the Second World War. In all other cases the rule concerning 10-year censuses has applied in accordance with international recommendations in most of the countries of the world.

Why 10 years?This period is considered acceptable, as its data can be used for the next 10 years. This does not apply for all of the data determined by the census. For example some data about economic activity can become obsolete relatively quickly. For this reason, methods such as surveys are used in the interim. Census is the only method that provides this information at a specific moment in contextures, structures and territorial detail.

In several countries (such as Canada, Australia, New Zealand, South Korea and Ireland), the periodicity of census is 5-years. With respect to demands, mainly financial ones, most countries of the world including the Czech Republic have respected the 10-year period.