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Census 2021 main statistics demography tables – age and sex

Date published: 22 September 2022

Statistics: Census 2021,  Census 2021 results,  Main statistics,  Population and household estimates

Download the main statistics demography tables related to age and sex from the 2021 Census in Northern Ireland.

This demography sub-theme provides estimates for a number of census topics, including age structure, sex ratio, median age and population density.

Data are available for Northern Ireland and the 11 Local Government Districts. Selected tables have been updated to include settlement and electoral ward data – download all main statistics tables available at settlement and electoral ward geographies.

This page was last updated on 30 November 2023.

View other main statistics tables by theme:

  • demography – country of birth
  • demography – passports held
  • demography – household relationships
  • ethnicity
  • identity
  • language
  • religion
  • sexual orientation
  • health, disability and unpaid care
  • housing and accommodation
  • communal establishments
  • qualifications
  • labour market
  • travel to work or study
  • migration

Download all main statistics tables.

Search all published census data using our Census 2021 table lookup.

Documents

  • MS-A01 Usual resident population [UPDATED] Microsoft Excel (54 KB)
  • MS-A02 Age - five year age bands - all usual residents [UPDATED] Microsoft Excel (54 KB)
  • MS-A03 Age - five year age bands - females Microsoft Excel (54 KB)
  • MS-A04 Age - five year age bands - males Microsoft Excel (54 KB)
  • MS-A05 Age - single year [UPDATED] Microsoft Excel (54 KB)
  • MS-A06 Age structure Microsoft Excel (54 KB)
  • MS-A07 Sex [UPDATED] Microsoft Excel (54 KB)
  • MS-A08 Five year age bands and sex [UPDATED] Microsoft Excel (54 KB)
  • MS-A09 Single year of age and sex [UPDATED] Microsoft Excel (54 KB)
  • MS-A10 Broad age bands and sex [UPDATED] Microsoft Excel (54 KB)
  • MS-A11 Broad age bands and sex - 1851-2021 Microsoft Excel (54 KB)
  • MS-A12 Sex ratio (males per 100 females) by five year age bands Microsoft Excel (54 KB)
  • MS-A13 Median age by sex Microsoft Excel (54 KB)
  • MS-A14 Population density Microsoft Excel (54 KB)
  • MS-A15 Residence type [UPDATED] Microsoft Excel (54 KB)

Help viewing documents

Last updated: 03 March 2025

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