Photo: Alf Beard · CC0Llanfoist: 33% of households have dependent children, above 90% of UK towns
Here 9.3% of residents are aged 15 to 24, where the figure across Wales’s towns is 12%. Locally, 37% of households live in a detached house. On households in terraced houses, Llanfoist sits lower than nearly two thirds of UK towns: 17%. The village had 2,007 residents and 813 households at the 2021 Census, with a median age of 42.9.
What the Census says about Llanfoist’s people
A village of families
33% of Llanfoist’s 813 households had dependent children in 2021, more than in 90% of UK towns. 19% of residents are under 15. Households ↓
Written from the data on this page: ONS Census 2021 (output areas summed to the 2022 built-up area).
Younger than 62% of UK towns: half of Llanfoist is under 42.9
Share of residents in each five-year age band, Census 2021.
No age band is larger than 30–34: 7.3% of residents. 21% of residents are 65 or over, a lower share than in 55% of UK towns. In Abergavenny, the oldest of Gwent’s towns by this measure, it is 27%.
Broad ages · share of residents
Women and men · all residents
51% women, 49% men
About 96 men for every 100 women. Across Wales, 51% of residents are women.
Above 80% of UK towns: 5.7% of adults are full-time students
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%.
Residents who moved in within the year: 10%, near enough the figure across Wales’s towns. The wider picture: 8% of adults are full-time students across Wales’s towns.
The Census was taken on 21 March 2021, in term time, so students were counted at their term addresses.
Llanfoist ranks below 72% of UK towns on one-person households: 27%
Household make-up at the 2021 Census. Each square is 1% of households.
Against Gwent’s towns and Wales’s towns
People per household
Wales’s towns.
A household here has 2.4 people on average; across Wales’s towns, 2.3. 2.1% of households are unrelated adults sharing a home. For comparison, nearly a third of households are one person living alone across Wales’s towns.
Only 13% of households in Llanfoist have no car or van
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
At 10%, the share of households in flats is lower than in just over half of UK towns. The wider picture: just over a fifth of households have no car or van across Wales’s towns.
More residents whose main language is English than 95% of UK towns: 99%
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%
When those born abroad arrived
Main language · residents aged 3 and over
Where 23% of those born abroad across Wales’s towns arrived in 2017 or later, here the share is 8.5%. The share of residents whose main language is English across Wales’s towns is 96%. Residents born outside the UK account for 5.2%.
8.2% of residents speak Welsh in Llanfoist
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
Asked in 2021, 159 residents aged 3 and over, 8.2%, said they can speak Welsh; across Welsh towns, 16%: fewer than in 84% of Welsh towns. No town in Gwent beats Abertridwr and Senghenydd (14%).
Residents who describe themselves as Christian: 47%, a lower share than 67% 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: 93% of Llanfoist · Gwent’s towns 91% · Wales’s towns 90%.
Religion · all residents
46% of residents said they have no religion, against 47% across Wales’s towns. Residents who describe themselves as Christian: 43% across Wales’s towns, for comparison. Census figures put residents who describe themselves as White British at 93% in Llanfoist.
Adults who have never married: 33%, a higher share than 55% of UK towns
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
Unpaid carers giving 50 hours or more a week: 59. Measured more widely, 38% of adults have never married or formed a civil partnership across Wales’s towns. At 10%, the share of unpaid carers is higher than in two thirds of UK towns. By its share of married adults and civil partners (47%), Llanfoist is below 54% of UK towns.
41% of adults have a degree-level qualification
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
With 41% of its adults qualified to degree level, Llanfoist compares with 31% across Wales’s towns; another 16% hold no qualification (20%).
Nearby, 5 of 7 towns have older populations than Llanfoist
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 |
|---|---|---|---|---|---|
| Llanfoist | 2,007 | — | 42.9 | 21% | 33% |
| Abergavenny | 13,689 | 1.2 mi | 48.9 | 27% | 23% |
| Govilon | 1,342 | 1.6 mi | 55.2 | 33% | 19% |
| Gilwern | 2,184 | 2.8 mi | 51.3 | 30% | 23% |
| Blaenavon | 5,637 | 3.6 mi | 40.2 | 19% | 29% |
| Penperlleni | 1,396 | 5.5 mi | 50.8 | 27% | 23% |
| Crickhowell | 2,108 | 5.6 mi | 54.6 | 34% | 20% |
| Abersychan | 7,495 | 5.9 mi | 41.4 | 19% | 30% |
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.
- “Gwent’s towns” and “Wales’s towns” mean their built-up areas. Census comparisons pool every built-up area in Gwent (or Wales), summed the same way as Llanfoist’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 Llanfoist’s residents
What is the population of Llanfoist?
The 2021 Census counted 2,007 people in Llanfoist’s built-up area.
What is the average age in Llanfoist?
The median age was 42.9 at the 2021 Census. 9.3% of residents were 15 to 24 and 21% were 65 or over.
How diverse is Llanfoist?
93% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 91% across Gwent’s towns. 5.2% were born outside the UK.
What religion are people in Llanfoist?
46% said they had no religion and 47% that they were Christian at the 2021 Census; 0.8% were Muslim and 4% didn’t answer.
Is Llanfoist good for families?
33% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Llanfoist’s schools page.
How many people speak Welsh in Llanfoist?
159 residents aged 3 and over, 8.2%, 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.