# People and census in Cardiff South Wales. 381,516 people (mid-2025 estimate) in 142 square kilometres. 24 layers about people and census for Cardiff, each at the level its publisher released it, with its own date and source. In: [Wales](https://openindex.co.uk/wales) ## What is the population of Cardiff? Cardiff had 362,308 usual residents at the census. Cardiff is the 26th most populated of 361 in the UK. ## Population Cardiff: **362,308** (2021, council level). Source: ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021. Published 21 July 2026. Cardiff had 362,308 usual residents at the census. Cardiff is the 26th most populated of 361 in the UK. [Map](https://openindex.co.uk/map/population?place=W06000015) · [Source and method](https://openindex.co.uk/sources/population) · [Ranking](https://openindex.co.uk/rankings/population/wales) · https://openindex.co.uk/cardiff/people#l-population ## Population estimate Cardiff: **381,516** (2025, council level). Source: ONS population estimates. Published 1 October 2026. Cardiff’s population was an estimated 381,516 in mid-2025. The population fell 0.1% in the year to mid-2025. Cardiff is 25th most populated of 361 for population. [Map](https://openindex.co.uk/map/population-estimate?place=W06000015) · [Source and method](https://openindex.co.uk/sources/population-estimate) · [Ranking](https://openindex.co.uk/rankings/population-estimate/wales) · https://openindex.co.uk/cardiff/people#l-population-estimate ## Aged 15 to 64 Cardiff: **68.4%** (2021, council level). Source: ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021. Published 21 July 2026. 68.4% of residents in Cardiff were aged 15 to 64 at the census. In Wales the figure is 62.2%. - Against Wales: 10% higher (62.2%) [Map](https://openindex.co.uk/map/age-15-to-64?place=W06000015) · [Source and method](https://openindex.co.uk/sources/age-15-to-64) · [Ranking](https://openindex.co.uk/rankings/age-15-to-64/wales) · https://openindex.co.uk/cardiff/people#l-age-15-to-64 ## Aged 65 and over Cardiff: **14.5%** (2021, council level). Source: ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021. Published 21 July 2026. 14.5% of residents in Cardiff were aged 65 or over at the census. In Wales the figure is 21.3%. - Against Wales: 32% lower (21.3%) [Map](https://openindex.co.uk/map/age-65-and-over?place=W06000015) · [Source and method](https://openindex.co.uk/sources/age-65-and-over) · [Ranking](https://openindex.co.uk/rankings/age-65-and-over/wales) · https://openindex.co.uk/cardiff/people#l-age-65-and-over ## Aged under 15 Cardiff: **17.1%** (2021, council level). Source: ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021. Published 21 July 2026. 17.1% of residents in Cardiff were aged under 15 at the census. In Wales the figure is 16.5%. - Against Wales: 4% higher (16.5%) [Map](https://openindex.co.uk/map/age-under-15?place=W06000015) · [Source and method](https://openindex.co.uk/sources/age-under-15) · [Ranking](https://openindex.co.uk/rankings/age-under-15/wales) · https://openindex.co.uk/cardiff/people#l-age-under-15 ## Born outside the UK Cardiff: **16.5%** (2021, council level). Source: ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021. Published 21 July 2026. 16.5% of residents in Cardiff were born outside the UK. In Wales the figure is 6.9%. - Against Wales: 2.4 times (6.9%) [Map](https://openindex.co.uk/map/born-outside-uk?place=W06000015) · [Source and method](https://openindex.co.uk/sources/born-outside-uk) · [Ranking](https://openindex.co.uk/rankings/born-outside-uk/wales) · https://openindex.co.uk/cardiff/people#l-born-outside-uk ## Disability Cardiff: **18.6%** (2021, council level). Source: ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021. Published 21 July 2026. 18.6% of residents in Cardiff had their day-to-day activities limited by a long-term health problem or disability. In Wales the figure is 21.6%. - Against Wales: 14% lower (21.6%) [Map](https://openindex.co.uk/map/disability?place=W06000015) · [Source and method](https://openindex.co.uk/sources/disability) · [Ranking](https://openindex.co.uk/rankings/disability/wales) · https://openindex.co.uk/cardiff/people#l-disability ## Good or very good health Cardiff: **81.9%** (2021, council level). Source: ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021. Published 21 July 2026. 81.9% of residents in Cardiff said their health was good or very good. In Wales the figure is 78.6%. - Against Wales: 4% higher (78.6%) [Map](https://openindex.co.uk/map/good-health?place=W06000015) · [Source and method](https://openindex.co.uk/sources/good-health) · [Ranking](https://openindex.co.uk/rankings/good-health/wales) · https://openindex.co.uk/cardiff/people#l-good-health ## Households Cardiff: **147,333** (2021, council level). Source: ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021. Published 21 July 2026. Cardiff had 147,333 households at the census. Cardiff is 31st highest of 361 for the number of households. [Map](https://openindex.co.uk/map/households?place=W06000015) · [Source and method](https://openindex.co.uk/sources/households) · [Ranking](https://openindex.co.uk/rankings/households/wales) · https://openindex.co.uk/cardiff/people#l-households ## Households without a car or van Cardiff: **26.0%** (2021, council level). Source: ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021. Published 21 July 2026. 26.0% of households in Cardiff had no car or van at the census. In Wales the figure is 19.4%. - Against Wales: 34% higher (19.4%) [Map](https://openindex.co.uk/map/no-car-or-van?place=W06000015) · [Source and method](https://openindex.co.uk/sources/no-car-or-van) · [Ranking](https://openindex.co.uk/rankings/no-car-or-van/wales) · https://openindex.co.uk/cardiff/people#l-no-car-or-van ## Owner-occupied homes Cardiff: **58.3%** (2021, council level). Source: ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021. Published 21 July 2026. 58.3% of households in Cardiff owned their home at the census. In Wales the figure is 66.4%. - Against Wales: 12% lower (66.4%) [Map](https://openindex.co.uk/map/owner-occupied?place=W06000015) · [Source and method](https://openindex.co.uk/sources/owner-occupied) · [Ranking](https://openindex.co.uk/rankings/owner-occupied/wales) · https://openindex.co.uk/cardiff/people#l-owner-occupied ## Population density Cardiff: **2,546 per km²** (2021, council level). Source: Worked out by Open Index from census population counts and the area of each place. Published 21 July 2026. Cardiff had 2,546 people per square kilometre at the census. In Wales the figure is 150 per km². - Against Wales: 17 times (150 per km²) [Map](https://openindex.co.uk/map/population-density?place=W06000015) · [Source and method](https://openindex.co.uk/sources/population-density) · [Ranking](https://openindex.co.uk/rankings/population-density/wales) · https://openindex.co.uk/cardiff/people#l-population-density ## Private rented homes Cardiff: **24.3%** (2021, council level). Source: ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021. Published 21 July 2026. 24.3% of households in Cardiff rented privately at the census. In Wales the figure is 17.0%. - Against Wales: 43% higher (17.0%) [Map](https://openindex.co.uk/map/private-rented?place=W06000015) · [Source and method](https://openindex.co.uk/sources/private-rented) · [Ranking](https://openindex.co.uk/rankings/private-rented/wales) · https://openindex.co.uk/cardiff/people#l-private-rented ## Social rented homes Cardiff: **17.2%** (2021, council level). Source: ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021. Published 21 July 2026. 17.2% of households in Cardiff rented from a council or housing association at the census. In Wales the figure is 16.5%. - Against Wales: 4% higher (16.5%) [Map](https://openindex.co.uk/map/social-rented?place=W06000015) · [Source and method](https://openindex.co.uk/sources/social-rented) · [Ranking](https://openindex.co.uk/rankings/social-rented/wales) · https://openindex.co.uk/cardiff/people#l-social-rented ## Degree-level qualifications Cardiff: **40.0%** (2021, council level, England, Wales and Northern Ireland only). Source: ONS Census 2021 and NISRA Census 2021. Published 19 January 2023. 40.0% of residents aged 16 and over in Cardiff had a degree-level qualification at the census. In Wales the figure is 31.5%. - Against Wales: 27% higher (31.5%) [Map](https://openindex.co.uk/map/degree-level-qualifications?place=W06000015) · [Source and method](https://openindex.co.uk/sources/degree-level-qualifications) · [Ranking](https://openindex.co.uk/rankings/degree-level-qualifications/wales) · https://openindex.co.uk/cardiff/people#l-degree-level-qualifications ## Asian, Asian British or Asian Welsh Cardiff: **9.7%** (2021, council level, England and Wales only). Source: ONS Census 2021. Published 19 January 2023. 9.7% of residents in Cardiff identified with the Asian, Asian British or Asian Welsh ethnic group. In Wales the figure is 2.9%. - Against Wales: 3.3 times (2.9%) [Map](https://openindex.co.uk/map/ethnic-group-asian?place=W06000015) · [Source and method](https://openindex.co.uk/sources/ethnic-group-asian) · [Ranking](https://openindex.co.uk/rankings/ethnic-group-asian/wales) · https://openindex.co.uk/cardiff/people#l-ethnic-group-asian ## Black, Black British, Black Welsh, Caribbean or African Cardiff: **3.8%** (2021, council level, England and Wales only). Source: ONS Census 2021. Published 19 January 2023. 3.8% of residents in Cardiff identified with the Black, Black British, Black Welsh, Caribbean or African ethnic group. In Wales the figure is 0.9%. - Against Wales: 4.2 times (0.9%) [Map](https://openindex.co.uk/map/ethnic-group-black?place=W06000015) · [Source and method](https://openindex.co.uk/sources/ethnic-group-black) · [Ranking](https://openindex.co.uk/rankings/ethnic-group-black/wales) · https://openindex.co.uk/cardiff/people#l-ethnic-group-black ## Mixed or Multiple ethnic groups Cardiff: **4.0%** (2021, council level, England and Wales only). Source: ONS Census 2021. Published 19 January 2023. 4.0% of residents in Cardiff identified with a Mixed or Multiple ethnic group. In Wales the figure is 1.6%. - Against Wales: 2.5 times (1.6%) [Map](https://openindex.co.uk/map/ethnic-group-mixed?place=W06000015) · [Source and method](https://openindex.co.uk/sources/ethnic-group-mixed) · [Ranking](https://openindex.co.uk/rankings/ethnic-group-mixed/wales) · https://openindex.co.uk/cardiff/people#l-ethnic-group-mixed ## Other ethnic group Cardiff: **3.3%** (2021, council level, England and Wales only). Source: ONS Census 2021. Published 19 January 2023. 3.3% of residents in Cardiff identified with another ethnic group, including Arab. In Wales the figure is 0.9%. - Against Wales: 3.7 times (0.9%) [Map](https://openindex.co.uk/map/ethnic-group-other?place=W06000015) · [Source and method](https://openindex.co.uk/sources/ethnic-group-other) · [Ranking](https://openindex.co.uk/rankings/ethnic-group-other/wales) · https://openindex.co.uk/cardiff/people#l-ethnic-group-other ## White ethnic groups Cardiff: **79.2%** (2021, council level, England and Wales only). Source: ONS Census 2021. Published 19 January 2023. 79.2% of residents in Cardiff identified with a White ethnic group. In Wales the figure is 93.8%. - Against Wales: 16% lower (93.8%) [Map](https://openindex.co.uk/map/ethnic-group-white?place=W06000015) · [Source and method](https://openindex.co.uk/sources/ethnic-group-white) · [Ranking](https://openindex.co.uk/rankings/ethnic-group-white/wales) · https://openindex.co.uk/cardiff/people#l-ethnic-group-white ## Christian Cardiff: **38.3%** (2021, council level, England and Wales only). Source: ONS Census 2021. Published 19 January 2023. 38.3% of residents in Cardiff said they were Christian. In Wales the figure is 43.6%. - Against Wales: 12% lower (43.6%) [Map](https://openindex.co.uk/map/christian?place=W06000015) · [Source and method](https://openindex.co.uk/sources/christian) · [Ranking](https://openindex.co.uk/rankings/christian/wales) · https://openindex.co.uk/cardiff/people#l-religion-christian ## No religion Cardiff: **42.9%** (2021, council level, England and Wales only). Source: ONS Census 2021. Published 19 January 2023. 42.9% of residents in Cardiff said they had no religion. In Wales the figure is 46.5%. - Against Wales: 8% lower (46.5%) [Map](https://openindex.co.uk/map/no-religion?place=W06000015) · [Source and method](https://openindex.co.uk/sources/no-religion) · [Ranking](https://openindex.co.uk/rankings/no-religion/wales) · https://openindex.co.uk/cardiff/people#l-religion-none ## Working mainly from home Cardiff: **36.1%** (2021, council level, England and Wales only). Source: ONS Census 2021. Published 19 January 2023. 36.1% of working residents in Cardiff worked mainly from home in March 2021. In Wales the figure is 25.6%. - Against Wales: 41% higher (25.6%) [Map](https://openindex.co.uk/map/work-from-home?place=W06000015) · [Source and method](https://openindex.co.uk/sources/work-from-home) · [Ranking](https://openindex.co.uk/rankings/work-from-home/wales) · https://openindex.co.uk/cardiff/people#l-work-from-home ## Annual population change Cardiff: **−0.1%** (2025, council level). Source: Worked out by Open Index from the mid-year population estimates. Published 1 October 2026. Cardiff’s estimated population changed by −0.1% in the year to mid-2025. [Map](https://openindex.co.uk/map/population-change?place=W06000015) · [Source and method](https://openindex.co.uk/sources/population-change) · [Ranking](https://openindex.co.uk/rankings/population-change/wales) · https://openindex.co.uk/cardiff/people#l-population-estimate-change-1y ## More on this place - [Overview](https://openindex.co.uk/cardiff) - [Housing](https://openindex.co.uk/cardiff/housing) (17) - [Crime](https://openindex.co.uk/cardiff/crime) (13) - [Deprivation](https://openindex.co.uk/cardiff/deprivation) (2) - [Health](https://openindex.co.uk/cardiff/health) (4) - [Education](https://openindex.co.uk/cardiff/education) (2) - [Environment](https://openindex.co.uk/cardiff/environment) (6) - [Transport](https://openindex.co.uk/cardiff/transport) (4) - [Connectivity](https://openindex.co.uk/cardiff/connectivity) (5) - [Economy](https://openindex.co.uk/cardiff/economy) (4) - [Council tax](https://openindex.co.uk/cardiff/council-tax) (11) - [Elections](https://openindex.co.uk/cardiff/elections) (8) - [Local services](https://openindex.co.uk/cardiff/services) (3) - [Sources](https://openindex.co.uk/cardiff/sources) (26) The same figures as JSON: https://openindex.co.uk/v1/places/W06000015/data?family=people ## How to cite Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/cardiff/people, or to one figure with its anchor, https://openindex.co.uk/cardiff/people#l-population. Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it. Snapshot 2026.10.8, https://doi.org/10.5281/zenodo.23508850. The HTML page: https://openindex.co.uk/cardiff/people