Households will soon be asked to take part in the nationwide survey of housing and the population as part of the national census.
The census has been carried out every decade since 1801, with the exception of 1941.
Information from the digital-first census will help decide how services are planned and funded in local areas.
This could mean things like doctors’ surgeries, housing or new bus routes.
Households will receive a letter with a unique access code in the post, allowing them to complete their questionnaire online.
Paper questionnaires are also available on request.
Census day is March 21 and for more information you can visit census.gov.uk.