The Office for National Statistics (ONS) is responsible for the census in England and Wales.
The census is a survey that happens every 10 years and everyone takes part.
Completion of the census has been a legal obligation since 1920.
The information submitted through the census is stored securely for 100 years when it is released to provide a valuable resource for historical and genealogical research.
The next census will take place on Sunday 21st March 2021.