Households across Barnsley will be asked to participate in Census 2021 on Sunday 21 March.
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, except for 1941.
It will be the first run predominantly online, with households receiving a letter with a unique access code, allowing them to complete the questionnaire on their computers, phones or tablets.
Census day is Sunday 21 March, but households across the country will receive letters with online codes allowing them to take part from early March.
Iain Bell, deputy national statistician at the Office for National Statistics, said: "A successful census will ensure everyone from local government to charities can put services and funding in the places where they are most needed.
"This could mean things like doctors' surgeries, schools and new transport routes. That's why it is so important everyone takes part, and we have made it easier for people to do so online on any device, with help and paper questionnaires for those that need them."
Councillor Alan Gardiner, Cabinet Spokesperson for Core Services, said: "The census is essential in helping us learn more about our local area and the people who live in Barnsley.
"I would encourage all residents to complete the census as the information we receive helps plan for services and funding across the borough."
The census will include questions about your sex, age, work, health, education, household size and ethnicity.
For the first time, there will be a question asking people whether they have served in the armed forces and voluntary questions for those aged 16 and over on sexual orientation and gender identity.
Results will be available within 12 months, although personal records will be locked away for 100 years, kept safe for future generations.
For more information, visit census.gov.uk.