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Census 2021

Overview

The population of Northern Ireland was 1,903,175 at the time of the 2021 Census. An increase of 5.1% since the 2011 Census.
Population is based on the number of usual residents. A usual resident is anyone who, on 21 March 2021 is in the UK, and staying in the UK for a period of 3 months or more; or has a permanent UK address and is outside the UK and is staying outside the UK for less than 12 months. Statistical bulletins
1,903,175
A household is either one person living alone or a group of people living at the same address who share cooking facilities and share a living room, sitting room or dining area. Statistical bulletins
768,810
A grouping of ages where a person’s age is their age at their last birthday on or prior to census day. Statistical bulletins
0-14 years 19%
15-39 years 31%
40-64 years 32%
65+ years 17%
Sex
  • Females 51%
  • Males 49%
The number of usual residents in the household. Statistical bulletins
  • 1 person 31%
  • 2 people 30%
  • 3 people 16%
  • 4 people 14%
  • 5 or more people 9%

Country of Birth and Nationality Statistics Northern Ireland - Census 2021

The country in which a person was born. Statistical bulletins
  • Northern Ireland 87%
  • England 4%
  • Scotland <1%
  • Wales <1%
  • Republic of Ireland 2%
  • Other countries 7%
Passport or passports that an individual holds. Statistical bulletins
  • UK only 47%
  • Ireland only 27%
  • UK & Ireland 5%
  • Other passport(s) 5%
  • No passport 16%
The nationality or nationalities that the person identifies with. Statistical bulletins
  • British only 32%
  • Irish only 29%
  • Northern Irish only 20%
  • British & Irish only <1%
  • British & Northern Irish only 8%
  • Irish & Northern Irish only 2%
  • British, Irish & Northern Irish only 1%
  • Other national identities 7%

Language Statistics Northern Ireland - Census 2021

Person's main language as declared in the Census. Statistics for all language questions are restricted to persons aged 3 and over. Statistical bulletins
  • English 95%
  • Other languages 5%
A person has some ability in Irish if they can understand, speak, read or write Irish. Statistics for all language questions are restricted to persons aged 3 and over. Statistical bulletins
  • No ability in Irish 88%
  • Some ability in Irish 12%
A person has some ability in Ulster-Scots if they can understand, speak, read or write Ulster-Scots. Statistics for all language questions are restricted to persons aged 3 and over. Statistical bulletins
  • No ability in Ulster-Scots 90%
  • Some ability in Ulster-Scots 10%

Religion and Ethnicity Statistics Northern Ireland - Census 2021

Religion, religious denomination or body the person indicated they belong to. Statistical bulletins
  • Catholic 42%
  • Presbyterian 17%
  • Church of Ireland 12%
  • Methodist 2%
  • Other Christian religions 7%
  • Other religions 1%
  • No religion/Not stated 19%
The religious group the person belongs to or for people with no current religion their religious group of upbringing. People with no current religion and no religion of upbringing are labelled 'None'. Statistical bulletins
  • Catholic 46%
  • Protestant & other Christian religions 43%
  • Other religions 1%
  • None 9%
Person’s ethnic group as declared in the Census. Statistical bulletins
  • White 97%
  • Other ethnic groups 3%

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  • About this app

    This web application is based on and inspired by the ONS Digital Content team prototypes. It has been modified by NISRA and released as a prototype to explore Census data for Northern Ireland. We welcome feedback from users through our short survey.