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Super Data Zones (Census 2021)

Super Data Zones (SDZ2021) are a new statistical output geography, introduced in Northern Ireland after the 2021 Census.

Overview

NISRA has developed two new statistical output geographies to support the dissemination of Census 2021 statistics, namely Data Zones and Super Data Zones.

There are 850 Super Data Zones (SDZ2021) across Northern Ireland and the 3,780 Data Zones (DZ2021) nest within this geography. These two geographies nest within the 80 District Electoral Areas (DEA2014) and 11 Local Government Districts (LGD2014).

  • Read our information papers to find out how the new statistical output geographies have been developed, and how other Northern Ireland geographies can be approximated
  • Person and household estimates from Census 2021 are available for Data Zone, Super Data Zone and District Electoral Area
  • Census 2021 population-weighted centroids are available for Super Data Zones

Super Data Zone digital boundaries in GIS format

Users are able to download Super Data Zone digital boundaries in a number of formats:

  • ESRI Shapefile
  • GeoJSON
  • Geodatabase

Super Data Zone attribute table

AttributeDescription
SDZ2021_cdSuper Data Zone code
SDZ2021_nmSuper Data Zone name
DEA2014_cdDistrict Electoral Area code
DEA2014_nmDistrict Electoral Area name
LGD2014_cdLocal Government District code
LGD2014_nmLocal Government District name
Area_haSuper Data Zone area (hectares)
Perim_kmSuper Data Zone perimeter (kilometres)

Geography preview

Census 2021 Super Data Zone boundaries

Last updated: 03 March 2025

Related to Super Data Zones (Census 2021)

Publications

  • Census 2021 population-weighted centroids for Data Zones and Super Data Zones

    Published 06 October 2023
  • Super Data Zone boundaries in GIS format

    Published 21 February 2023
  • Census 2021 person and household estimates for Data Zones in Northern Ireland

    Published 21 February 2023
  • Census 2021 output geography information papers

    Published 21 February 2023
See all publications in this topic

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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