Last updated
22 Nov 2021

What is your date of birth?

How do I answer this question?

Enter the date you were born.

Enter the day, month and year in the format DD MM YYYY.  For example, if you were born on the 2nd November 1990 then you would enter 02 11 1990.

If you do not know your date of birth, estimate it as best you can.

I am answering for someone else and do not know their date of birth. How do I answer?

If you are answering for someone else and do not know their date of birth, estimate it as best you can.

Babies born after 20 March 2022 should not be included.

Why is this question asked?

Answers to this question are used to calculate age.

What will you use this information for?

Age is used with other data, for example, sex and marital status, to provide important information about the population. The census combines this information to measure changes in society and calculate rates of:

  • mortality
  • fertility
  • marriage
  • divorce

It is used to produce statistics to support allocation of public money and to plan and deliver public services.

Why do you not just ask for age?

We ask for date of birth, rather than age, so that we can work out your age at different dates.

Who should answer this question?

Everyone should answer this question.

Is this page useful?

Do not include personal information or contact information. Please note that we will not respond directly to any feedback sent from this page. We will use this information to improve our service.