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Census 2021 variable classifications

Date published: 22 September 2022

Statistics: Census 2021,  Census 2021 results,  Census 2021 reference materials

Download the full classifications for some of the larger and more detailed variables used in Census 2021.

Overview

These classifications are part of the Census 2021 variables index and provide insight into how data is structured before being grouped for publication.

Classifications include:

  • country of birth
  • passports held
  • ethnic group
  • national identity
  • main language
  • religion
  • occupation
  • industry

Note: Most variables are not published in their full detailed form. For privacy and statistical disclosure control, many are collapsed into broader categories before release.

Documents

  • Census 2021 - Country of birth classification Microsoft Excel (20 KB)
  • Census 2021 - Passports held classification Microsoft Excel (18 KB)
  • Census 2021 - Ethnic group classification Microsoft Excel (20 KB)
  • Census 2021 - National identity classification Microsoft Excel (25 KB)
  • Census 2021 - Main language classification Microsoft Excel (29 KB)
  • Census 2021 - Religion classification Microsoft Excel (19 KB)
  • Census 2021 - Occupation classification Microsoft Excel (31 KB)
  • Census 2021 - Industry classification Microsoft Excel (22 KB)

Help viewing documents

Last updated: 29 May 2025

Links

  • Official Statistics producer – Upholding Trust, Quality and Value
  • General Register Office - registration and certification of life events relating to births, deaths and marriages
  • nidirect.gov.uk – the official government website for Northern Ireland citizens
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