The census is a once-in-a-decade survey that gives us the most accurate estimate of all the people and households in England and Wales. It has been carried out every decade since 1801, with the exception of 1941.
Census day will be on March 21, but households across the country will be receiving letters with online codes allowing them to take part from early March.
The census will include questions about your sex, age, work, health, education, household size and ethnicity. And, for the first time, there will be a question asking people whether they have served in the armed forces, as well as voluntary questions for those aged 16 and over on sexual orientation and gender identity.
See link to the census website here: