Photo: Stephen McKay · CC BY-SA 2.0A Welsh-speaking village: 44% of Llandeilo’s residents speak Welsh
Here 46% of households are one person living alone, where the figure across Wales’s towns is 32%. With a median age of 49.4, Llandeilo is older than 82% of UK towns. Its 892 households held 1,788 residents at the 2021 Census. In Llandeilo, just over a fifth of households have dependent children.
What the Census says about Llandeilo’s people
A Welsh-speaking village
775 residents, 44% of those aged 3 and over, said they can speak Welsh in 2021, more than in 89% of Welsh towns. Welsh language ↓
Written from the data on this page: ONS Census 2021 (output areas summed to the 2022 built-up area).
Llandeilo sits below 85% of UK towns for residents aged 15 to 24 (8.6%)
Share of residents in each five-year age band, Census 2021.
Set against 21% across Wales’s towns, 26% of residents are 65 or over in Llandeilo. Against that, 12% of residents are aged 15 to 24 across Wales’s towns. 50–54 is the most common age band: nearly one in ten residents.
Broad ages · share of residents
Women and men · all residents
52% women, 48% men
About 91 men for every 100 women. Across Wales, 51% of residents are women. Women live longer than men, so towns with many older residents have more women.
Llandeilo ranks above 80% of UK towns on full-time students: 5.8%
What adults did at the 2021 Census (the ONS’s NS-SEC classes), and where residents lived a year earlier.
Adults by occupation class · residents 16 and over
Address a year before the Census
Residents who lived somewhere else a year earlier. The bar runs to 25%.
Nothing unusual on residents who moved in within the year: 9.9%, close to the figure across Wales’s towns. For full-time students, the comparison across Wales’s towns is 8%.
The Census was taken on 21 March 2021, in term time, so students were counted at their term addresses.
Llandeilo households average 2 people, smaller than in 99% of UK towns
Household make-up at the 2021 Census. Each square is 1% of households.
Against Dyfed’s towns and Wales’s towns
People per household
Wales’s towns.
Across Wales’s towns, 3.1% of households are unrelated adults sharing a home; in Llandeilo, 1.9%.
In Llandeilo, 19% of households have no car or van, more than in 69% of UK towns
Accommodation type and cars or vans per household, Census 2021. Owning and renting are on Cost of living.
Type of home
Cars or vans · share of households
Set against 29% across Wales’s towns, 28% of households live in a terraced house in Llandeilo. The village has more households in flats than 67% of UK towns, at 14%. Against that, just over a fifth of households have no car or van across Wales’s towns. Census figures put households in detached houses at 24% locally.
Only 5.5% of Llandeilo’s residents were born outside the UK
Country of birth, year of arrival and main language, Census 2021.
Born outside the UK, by region · share of all residents; the bar runs to 10%
Main language · residents aged 3 and over
Among residents born abroad, the largest groups were born in EU countries (2.2%) and in the Middle East and Asia (1.2%). Typically, 7.4% of residents were born outside the UK across Wales’s towns. Few places have as many residents whose main language is English: 98% here, more than in 54% of UK towns.
44% of Llandeilo’s residents say they can speak Welsh
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
Welsh speakers number 775, or 44% of residents aged 3 and over, against 16% across Welsh towns: more than in 89% of them. Top of Dyfed: Tumble, at 62%.
Residents who describe themselves as Christian make up 46% in Llandeilo, less than in 74% of UK towns
How residents described themselves at the 2021 Census. Lines join the lowest and highest of the three figures.
Ethnic groups other than White British · all residents
White British, not charted: 94% of Llandeilo · Dyfed’s towns 93% · Wales’s towns 90%.
Religion · all residents
Beyond White British, the biggest groups are Other White (3.2%), Mixed or multiple (0.8%) and Chinese (0.3%). For comparison, 43% of residents describe themselves as Christian across Wales’s towns. More residents who describe themselves as White British than in 66% of UK towns: 94%. The share of residents with no religion tops 83% of UK towns: 46%.
34% of adults have never married or formed a civil partnership, a share 62% of UK towns don’t reach
Legal partnership status (residents 16 and over) and unpaid care (residents 5 and over), Census 2021.
Partnership status · residents 16 and over
Unpaid care given · share of residents 5 and over
Against a figure of 43% across Wales’s towns, the share of married adults and civil partners in Llandeilo comes in at 42%. Set beside that, 38% of adults have never married or formed a civil partnership across Wales’s towns. 52 residents give 50 hours or more of unpaid care each week.
38% of adults hold a degree-level qualification
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
Degree-level qualifications are held by 38% of adults in Llandeilo (Wales’s towns: 31%), and no qualification by 18% (Wales’s towns: 20%).
Llandeilo sits below 1 of its 7 closest neighbours on median age
Nearby built-up areas coloured by median age, Census 2021. Tap a town for its page.
| Town | People | Away | Median age | 65+ | Homes with children |
|---|---|---|---|---|---|
| Llandeilo | 1,788 | — | 49.4 | 26% | 21% |
| Llandybie | 2,563 | 4.6 mi | 47.2 | 27% | 29% |
| Penybanc | 1,165 | 6.4 mi | 51.3 | 31% | 25% |
| Ammanford | 8,282 | 6.4 mi | 44.7 | 24% | 27% |
| Glanaman | 3,866 | 6.5 mi | 45 | 22% | 25% |
| Cross Hands and Pen-y-groes | 6,339 | 6.9 mi | 42.7 | 21% | 29% |
| Capel Hendre | 1,143 | 7.3 mi | 47.9 | 26% | 28% |
| Brynamman | 2,636 | 7.3 mi | 46.1 | 21% | 25% |
Health, work and homes have their own pages
What this data can and can’t tell you
- The Census was taken in a lockdown, in term time. 21 March 2021 fell in term time, and students were asked to give their term-time address, so most were counted where they study. Some may have been living with family that day.
- “Dyfed’s towns” and “Wales’s towns” mean their built-up areas. Census comparisons pool every built-up area in Dyfed (or Wales), summed the same way as Llandeilo’s figures, so households in open countryside are left out.
- Small counts are blurred. The ONS adds small random changes to Census counts to protect privacy, so the same total differs a little between tables, and the shares of a small town can move by a point or two.
Questions about Llandeilo’s residents
What is the population of Llandeilo?
The 2021 Census counted 1,788 people in Llandeilo’s built-up area.
What is the average age in Llandeilo?
The median age was 49.4 at the 2021 Census. 8.6% of residents were 15 to 24 and 26% were 65 or over.
How diverse is Llandeilo?
94% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 93% across Dyfed’s towns. 5.5% were born outside the UK.
What religion are people in Llandeilo?
46% said they had no religion and 46% that they were Christian at the 2021 Census; 0.7% were Muslim and 5.5% didn’t answer.
Is Llandeilo good for families?
21% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Llandeilo’s schools page.
How many people speak Welsh in Llandeilo?
775 residents aged 3 and over, 44%, said they can speak Welsh at the 2021 Census, against 16% across Welsh towns.
Sources: ONS Census 2021, output areas summed to the ONS 2022 built-up area (TS002, TS003, TS004, TS007A, TS008, TS015, TS017, TS019, TS021, TS029, TS030, TS039, TS044, TS045, TS062, TS067, TS032). All under the Open Government Licence v3.0.
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.