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Updates register

Amendments to the Census 2021 outputs prospectus will be published as and when more information becomes available.

All changes that have been made to the Census 2021 outputs prospectus since its first publication on 31 January 2022 are detailed in the updates register. This will allow users to keep track of developments, including additions and deletions. 

DateProspectus sectionDetails and comments
14 April 2025United Kingdom 2021/22 Census dataLink included to latest information from ONS on UK data.
27 March 2025All sectionsUpdate to links following migration of content to new NISRA website.
25 February 2025United Kingdom 2021/22 Census dataContact information for queries regarding UK census data has been updated.
16 January 2025Release plans for Census 2021 statistics

Section updated to reflect the publication of Census 2021 public microdata teaching file on 16 January 2025.

Release schedule in Table 1 updated.

Update to prospectus pdf.

16 January 2025Census 2021 specialist releasesSection updated to reflect the publication of Census 2021 public microdata teaching file on 16 January 2025.
16 January 2025NISRA Population and Migration estimatesUpdate section with information on most recent publications for Mid-Year Population Estimates.
19 December 2024Release plans for Census 2021 statistics

Section updated to confirm the publication of Census 2021 public microdata teaching file as 16 January 2025.

Release schedule in Table 1 updated.

Update to prospectus pdf.

19 December 2024Census 2021 specialist releasesSection updated to confirm the publication of Census 2021 public microdata teaching file as 16 January 2025.
8 August 2024Release plans for Census 2021 statistics

Section updated to reflect the publication of Census 2021 alternative populations data for Northern Ireland as 8 August 2024.

Release schedule in Table 1 updated.

Update to prospectus pdf.

8 August 2024Census 2021 specialist releasesSection updated to reflect the publication of Census 2021 alternative populations data for Northern Ireland as 8 August 2024.
8 August 2024All sectionsA number of updates were made across the document for general maintenance and consistency purposes.
9 July 2024Release plans for Census 2021 statistics

Section updated to reflect the publication of Census 2021 origin-destination data for Northern Ireland as 9 July 2024.

Section updated to confirm the publication of Census 2021 alternative populations for Northern Ireland as 8 August 2024.

Release schedule in Table 1 updated.

Update to prospectus pdf.

9 July 2024Census 2021 Microdata products

Section updated to reflect the publication of Census 2021 origin-destination data for Northern Ireland as 9 July 2024.

Section updated to confirm the publication of Census 2021 alternative populations for Northern Ireland as 8 August 2024.

11 June 2024Release plans for Census 2021 statistics

Section updated to confirm the publication of Census 2021 origin-destination data for Northern Ireland as 9 July 2024.

Release schedule in Table 1 updated.

Update to prospectus pdf.

11 June 2024Census 2021 Microdata productsSection updated to confirm the publication of Census 2021 origin-destination data for Northern Ireland as 9 July 2024.
9 April 2024NISRA Population and Migration estimatesUpdate section with information on most recent publications for Mid-Year Population Estimates.
3 April 2024Release plans for Census 2021 statistics

Section updated to reflect the update of the Flexible Table Builder with minor changes and enhancements on 3 April 2024.

Release schedule in Table 1 updated.

Update to prospectus pdf.

3 April 2024Census 2021 Third Release: Flexible table builder and multivariate dataSection updated to reflect the update of the Flexible Table Builder with minor changes and enhancements on 3 April 2024.
29 February 2024Release plans for Census 2021 statistics

Section updated to reflect the publication of Census 2021 person and household estimates for postcodes in Northern Ireland as 29 February 2024.

Release schedule in Table 1 updated.

Update to prospectus pdf.

29 February 2024Census 2021 First Release: Population and Household StatisticsSection updated to reflect the publication of Census 2021 person and household estimates for postcodes in Northern Ireland as 29 February 2024.
29 February 2024Census 2021 Commissioned table serviceSection updated to reflect the opening of the Commissioned table service.
1 February 2024Release plans for Census 2021 statistics

Section updated to confirm the publication of Census 2021 person and household estimates for postcodes in Northern Ireland as 29 February 2024.

Release schedule in Table 1 updated.

Update to prospectus pdf.

1 February 2024Census 2021 First Release: Population and Household StatisticsSection updated to confirm the publication of Census 2021 person and household estimates for postcodes in Northern Ireland as 29 February 2024.
14 December 2023Release plans for Census 2021 statistics

Section updated to reflect the publication of Census 2021 Grid Square product as 14 December 2023.

Release schedule in Table 1 updated.

Update to prospectus pdf.

14 December 2023Additional releases (staged from winter 2023/2024)Section updated to reflect the publication of Census 2021 Grid Square product as 14 December 2023.
30 November 2023Release plans for Census 2021 statistics

Section updated to reflect the publication of the settlement and ward phase of main statistics on 30 November 2023.

Section updated to reflect the publication of Census 2021 data on approximated social grade on 30 November 2023.

Section updated to confirm the release date of Census 2021 grid square product as 14 December 2023.

Release schedule in Table 1 updated.

Update to prospectus pdf.

30 November 2023Census 2021 First Release: Population and Household StatisticsSection updated to include information on 'Census 2021 person and household estimates for Data Zones in Northern Ireland' release (previously known as Census 2021 statistics for small area geographies phase 1) and provide early details on a postcode-level person and household estimates release.
30 November 2023Census 2021 Second Release: Main Statistics

Section updated to reflect the publication of the settlement and ward phase of main statistics on 30 November 2023.

Section updated to reflect the publication of Census 2021 data on approximated social grade on 30 November 2023.

30 November 2023Final Releases (staged from summer 2023)

Section renamed 'Additional releases (staged from winter 2023/2024).

Section updated to confirm the release date of Census 2021 grid square product as 14 December 2023.

Section named 'Census 2021 Statistics for Towns and Villages' has been removed, and details on the publication of related data are now included in 'Main Statistics (settlements and wards)' and 'Flexible Table Builder and multivariate data (phase 2) – Flexible Table Builder'

30 November 2023All sectionsA number of updates were made across the document for general maintenance and consistency purposes.
9 November 2023Release plans for Census 2021 statisticsSection updated to confirm the date of approximated social grade release as 30 November 2023.
3 November 2023Release plans for Census 2021 statistics

Section updated to confirm the date of the settlement and ward phase of main statistics as 30 November 2023.

Section updated to reflect the update of the Flexible Table Builder with data for new Parliamentary Constituency geography.

Release schedule in Table 1 updated.

Update to prospectus pdf.

3 November 2023Census 2021 Second Release: Main StatisticsSection updated to confirm the date of the settlement and ward phase of main statistics as 30 November 2023.
3 November 2023Census 2021 Third Release: Flexible table builder and multivariate dataSection updated to reflect the update of the Flexible Table Builder with data for new Parliamentary Constituency geography.
3 November 2023Final Releases (staged from summer 2023)Census 2021 Statistics for Towns and Villages section updated to confirm the date of the settlement and ward phase of main statistics as 30 November 2023.
3 November 2023All sectionsA number of updates were made across the document for general maintenance and consistency purposes.
22 June 2023Release plans for Census 2021 statistics

Section updated to reflect the launch of the Flexible Table Builder.

Release schedule in Table 1 updated.

Update to prospectus pdf.

22 June 2023Census 2021 Third Release: Flexible table builder and multivariate data

Section updated to reflect the launch of the Flexible Table Builder.

Draft table specifications for multivariate statistics file has been updated.

22 June 2023Final Releases (staged from summer 2023)

Section updated to reflect the launch of the Flexible Table Builder.

Link provided to the Census 2021 microdata strategy.

22 June 2023All sectionsA number of updates were made across the document for general maintenance and consistency purposes.
31 May 2023Release plans for Census 2021 statistics

Section updated to reflect the publication of the supplemental phase of Census 2021 main statistics and the selected multivariate tables.

The date of the release of the Flexible Table Builder confirmed for 22 June 2023.

Update to prospectus pdf.

31 May 2023Census 2021 Second Release: Main Statistics

Section updated to reflect the publication of the supplemental phase of Census 2021 main statistics.

Draft table specifications for multivariate statistics file has been updated.

Supplemental phase draft table layouts updated with final layouts.

31 May 2023Census 2021 Third Release: Flexible table builder and multivariate data

Section updated to reflect the publication of the selected multivariate tables on 31 May 2023.

Phase 1 draft table layouts updated with final layouts.

The date of the release of the Flexible Table Builder confirmed for 22 June 2023.

31 May 2023All sectionsA number of updates were made across the document for general maintenance and consistency purposes.
19 May 2023Release plans for Census 2021 statistics

Section updated to confirm the date of the supplemental phase of main statistics as 31 May 2023.

Also announcement of selected multivariate tables on 31 May 2023.

Update to prospectus pdf.

19 May 2023Census 2021 Second Release: Main Statistics

Section updated to confirm the date of the supplemental phase of main statistics as 31 May 2023.

Draft table layouts added.

19 May 2023Census 2021 Third Release: Flexible table builder and multivariate data

Section updated to announce the date of publication of the selected multivariate tables on 31 May 2023.

Draft table layouts added.

19 May 2023All sectionsA number of updates were made across the document for general maintenance and consistency purposes.
21 March 2023Release plans for Census 2021 statistics

Section updated to reflect the publication of the third phase of Census 2021 main statistics.

The date of the supplemental phase of main statistics confirmed for May 2023.

Update to prospectus pdf.

21 March 2023Census 2021 Second Release: Main Statistics

Section updated to reflect the publication of the third phase of Census 2021 main statistics.

Pre-defined table specifications file has been updated.

Phase 3 draft table layouts updated with final layouts.

The date of the supplemental phase of main statistics confirmed for May 2023.

21 March 2023Census 2021 Third Release: Multivariate Data Tables and Census 2021 Fourth Release: Flexible Table BuilderDue to revised timescales the planned third and fourth releases have been merged into one, Census 2021 Third Release: Flexible table builder and Multivariate Data.
21 March 2023All sectionsA number of updates were made across the document for general maintenance and consistency purposes.
21 February 2023Release plans for Census 2021 statistics

Section updated to reflect the publication of person and household estimates for new statistical output geographies.

The date of the third phase of main statistics confirmed for 21 March 2023.

Update to prospectus pdf.

21 February 2023Census 2021 Second Release: Main Statistics

Pre-defined table specifications file has been updated.

The date of the third phase of main statistics confirmed for 21 March 2023.

Addition of draft table layouts for phase 3 of main statistics.

21 February 2023Census 2021 Statistics for small area geographiesSection updated to reflect the publication of person and household estimates for new statistical output geographies.
31 January 2023Release plans for Census 2021 statistics

The date of person and household estimates for new statistical output geographies confirmed for 21 February 2023.

Update to prospectus pdf.

31 January 2023Census 2021 Statistics for small area geographies

The date for release of new statistical output geographies confirmed for 21 February 2023.

The date of accompanying person and household estimates for new statistical output geographies confirmed for 21 February 2023.

19 January 2023Census 2021 Statistics for small area geographies

Section updated to reflect revised release schedule of new Census 2021 statistical geographies.

Update to prospectus pdf.

15 December 2022Release plans for Census 2021 statistics

Section updated to reflect the publication of the second phase of Census 2021 main statistics.

Update to prospectus pdf.

15 December 2022Census 2021 First Release: Population and Household StatisticsSection updated to reflect the publication of NISRA population estimates on 29 November 2022.
15 December 2022Census 2021 Second Release: Main Statistics

Pre-defined table specifications file has been updated.

Section updated to reflect the publication of the second phase of Census 2021 main statistics.

Draft table layouts updated with final layouts.

15 December 2022All sectionsA number of updates were made across the document for general maintenance and consistency purposes.
17 November 2022Release plans for Census 2021 statistics

The date of the second phase of main statistics confirmed for 15 December 2022.

Update to prospectus pdf.

17 November 2022Census 2021 Second Release: Main StatisticsThe date of phase 2 of main statistics confirmed for 15 December 2022.
03 November 2022Release plans for Census 2021 statistics

The date of the second phase of main statistics confirmed for December 2022.

Release schedule updated to reflect changes to Release 2 topic proposals, including an additional phase for main statistics release, planned for spring 2023.

Update to prospectus pdf.

03 November 2022Census 2021 First Release: Population and Household StatisticsThe date for the next release of NISRA population estimates confirmed for 29 November 2022.
03 November 2022Census 2021 Second Release: Main Statistics

Pre-defined table specifications file has been updated.
The date of phase 2 of main statistics confirmed for December 2022.

Addition of draft table layouts for phase 2 of main statistics.

Additional phase for main statistics release added, with phases 2 and 3 updated to reflect changes to main statistics topic proposals.

03 November 2022All sectionsA number of updates were made across the document for general maintenance and consistency purposes.
23 September 2022Census 2021 Second Release: Univariate Main StatisticsCensus 2021 draft table specifications for univariate statistics updated to reflect published tables.
22 September 2022Release plans for Census 2021 statistics

Section updated to reflect the publication of the first phase of Census 2021 main statistics.

Update to prospectus pdf.

22 September 2022Census 2021 Second Release: Univariate Main Statistics

Section updated to reflect the publication of the first phase of Census 2021 main statistics.

Draft table layouts updated with final layouts.

15 September 2022Release plans for Census 2021 statistics

Following the death of Her Majesty Queen Elizabeth II and the announcement of a bank holiday on the day of the State Funeral on Monday 19 September 2022, the release of the first phase of main statistics results for Census 2021 planned for Tuesday 20 September has been moved to 9.30 am on Thursday 22 September.

The date of the first phase of main statistics has been amended in the relevant sections.

Update to prospectus pdf.

15 September 2022Census 2021 Second Release: Univariate Main StatisticsThe date of the first phase of main statistics has been amended in the relevant sections.
23 August 2022Release plans for Census 2021 statistics

The date of the first phase of main statistics confirmed for 20 September 2022.

Release schedule updated to reflect changes to Release 2 topic proposals.

Update to prospectus pdf.

23 August 2022Census 2021 First Release: Population and Household StatisticsUpdate to planned date for the next release of NISRA population estimates.
23 August 2022Census 2021 Second Release: Univariate Main Statistics

The date of the first phase of main statistics confirmed for 20 September 2022.

Phases 1 and 2 are updated to reflect changes to Release 2 topic proposals.

Pre-defined table specifications file has been split into two separate files to improve usability. The univariate specifications have been included in this section.

Addition of draft table layouts for phase 1 of main statistics.

23 August 2022Census 2021 Third Release: Multivariate Data TablesPre-defined table specifications file has been split into two separate files to improve usability. The multivariate specifications have been included in this section.
24 May 2022Release plans for Census 2021 statisticsSection updated to reflect the publication of the first release of Census 2021 statistics.
26 April 2022Release plans for Census 2021 statistics

The date of Census 2021 first release is confirmed for 24 May 2022.

Updates register added to the website.

26 April 2022Census 2021 First Release: Population and Household Statistics

The date of Census 2021 first release is confirmed for 24 May 2022.

Details of the release were updated to reflect changes since the Census 2021 outputs prospectus was first published.

Draft table layouts added to the NISRA website.

26 April 2022Census 2021 Statistics for Small Areas and Super Output AreasUpdate on the availability of new Census 2021 statistical geographies.

Last updated: 14 April 2025

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