# St Nicholas and Llancarfan South east Vale of Glamorgan. About 2,267 people (mid-2024 estimate) in 47 square kilometres. St Nicholas and Llancarfan had 2,194 usual residents at the census (ONS Census 2021). Ward. Code W05001398. In: [Wales](https://openindex.co.uk/wales) › [Vale of Glamorgan](https://openindex.co.uk/vale-of-glamorgan) ## Key figures - **Population: 2,194** (2021). St Nicholas and Llancarfan had 2,194 usual residents at the census (ONS Census 2021). Joint 411th least populated of 8,397. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/vale-of-glamorgan/ward/st-nicholas-and-llancarfan#f-population - **People in radon Affected Area squares: 100%** (2022). About 100% of people in St Nicholas and Llancarfan live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022. https://openindex.co.uk/vale-of-glamorgan/ward/st-nicholas-and-llancarfan#f-radon-affected-share - **Gigabit broadband coverage: 92.6%** (January 2026). In St Nicholas and Llancarfan, 92.6% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026. https://openindex.co.uk/vale-of-glamorgan/ward/st-nicholas-and-llancarfan#f-gigabit-coverage - **Aged 15 to 64: 63.6%** (2021). 63.6% of residents in St Nicholas and Llancarfan were aged 15 to 64 at the census (ONS Census 2021). Joint 3,058th highest of 8,397. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/vale-of-glamorgan/ward/st-nicholas-and-llancarfan#f-age-15-to-64 ## On the map - [Radon Affected Area by ward](https://openindex.co.uk/map/radon-affected-areas#place=W05001398) (Worked out by Open Index · 2022): About 100% of people in St Nicholas and Llancarfan live in a 1 km square that the radon atlas marks as a radon Affected Area. - [Average house price by council](https://openindex.co.uk/map/house-prices#place=W05001398) (UK House Price Index · August 2026): Published for whole councils, so the map colours all of Vale of Glamorgan. The outline is St Nicholas and Llancarfan. - [Population by ward](https://openindex.co.uk/map/population#place=W05001398) (Census 2021, England and Wales): St Nicholas and Llancarfan had 2,194 usual residents at the census. - [Most deprived 20% by council](https://openindex.co.uk/map/most-deprived-20-wales#place=W05001398) (Worked out by Open Index · 2025): Published for whole councils, so the map colours all of Vale of Glamorgan. The outline is St Nicholas and Llancarfan. ## How St Nicholas and Llancarfan compares Each ward against every other ward the measure covers. | Measure | St Nicholas and Llancarfan | Rank | Compared with | | --- | --- | --- | --- | | Population | 2,194 | 4th least populated | 24 wards, Vale of Glamorgan · 2021 | | People in radon Affected Area squares | 100% | joint most people in radon Affected Areas | 24 wards, Vale of Glamorgan · 2022 | | Gigabit broadband coverage | 92.6% | 11th lowest | 24 wards, Vale of Glamorgan · Jan 2026 | | Aged 15 to 64 | 63.6% | joint 5th highest | 24 wards, Vale of Glamorgan · 2021 | ## What is the population of St Nicholas and Llancarfan? St Nicholas and Llancarfan had 2,194 usual residents at the census. St Nicholas and Llancarfan is the joint 411th least populated of 8,397 in the UK. ## Figures for the whole of Vale of Glamorgan These figures are published for the whole of Vale of Glamorgan, not for each ward, so they describe all of Vale of Glamorgan and not St Nicholas and Llancarfan alone. [See Vale of Glamorgan](https://openindex.co.uk/vale-of-glamorgan) - **Average house price: £300,358** (August 2026). Vale of Glamorgan’s average house price was £300,358 in August 2026 (HM Land Registry). Up 3.2% in a year. Source: UK House Price Index, August 2026. Published 21 October 2026. - **Median full-time pay: £38,656** (2025). Full-time workers living in Vale of Glamorgan earned a median of £38,656 in 2025 (ONS earnings survey). 169th highest paid of 348. Source: Annual Survey of Hours and Earnings, 2025. Published 23 October 2025. - **House price to pay: 7.8×** (2025). A home in Vale of Glamorgan costs 7.8 times local full-time pay. Joint 140th least affordable of 348. Source: Worked out by Open Index from the UK House Price Index and the ONS earnings survey. Published 21 October 2026. - **Population estimate: 135,362** (2025). Vale of Glamorgan’s population was an estimated 135,362 in mid-2025 (ONS population estimates). No change in a year. Source: Mid-year population estimates, 2025. Published 1 October 2026. ## St Nicholas and Llancarfan in brief St Nicholas and Llancarfan had 2,194 usual residents at the census. About 100% of people in St Nicholas and Llancarfan live in a 1 km square that the radon atlas marks as a radon Affected Area. In St Nicholas and Llancarfan, 92.6% of homes and businesses could get gigabit-capable broadband in January 2026. 63.6% of residents in St Nicholas and Llancarfan were aged 15 to 64 at the census. ## About - Type: Ward - Code: W05001398 - Constituency: [Vale of Glamorgan †](https://openindex.co.uk/constituency/vale-of-glamorgan) - Council: [Vale of Glamorgan](https://openindex.co.uk/vale-of-glamorgan) - Nation: [Wales](https://openindex.co.uk/wales) - Area: 46.77 km² - People, mid-2024: 2,267* - Output areas: 6 * People: worked out by Open Index from neighbourhood estimates, shared out by where people lived at the census (by area in Northern Ireland). This area's edges do not follow neighbourhood edges, so the figure is close but not exact. † Best fit: the constituency this ward mostly lies in. Its edges do not follow it. ## Next door [Peterston-super-Ely](https://openindex.co.uk/vale-of-glamorgan/ward/peterston-super-ely), [Wenvoe](https://openindex.co.uk/vale-of-glamorgan/ward/wenvoe), [Rhoose](https://openindex.co.uk/vale-of-glamorgan/ward/rhoose), [Pentyrch and St Fagans](https://openindex.co.uk/cardiff/ward/pentyrch-and-st-fagans), [St Athan](https://openindex.co.uk/vale-of-glamorgan/ward/st-athan), [Cowbridge](https://openindex.co.uk/vale-of-glamorgan/ward/cowbridge) ## Latest updates for St Nicholas and Llancarfan - August 2026 house prices published: HM Land Registry and partners · Oct 2026. - September 2026 rent published: ONS private rents · Oct 2026. - Dental practices updated: NHS England · Oct 2026. - Schools updated: Ofsted · Oct 2026. The same figures as JSON: https://openindex.co.uk/v1/places/W05001398 ## How to cite Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/vale-of-glamorgan/ward/st-nicholas-and-llancarfan, or to one figure with its anchor, https://openindex.co.uk/vale-of-glamorgan/ward/st-nicholas-and-llancarfan#f-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 2026.10.11. The HTML page: https://openindex.co.uk/vale-of-glamorgan/ward/st-nicholas-and-llancarfan