Photo: Tiia Monto · CC BY-SA 3.068% of households live in a terraced house, a share 99% of UK towns don’t reach
Households without a car or van make up 26%, against 21% across Wales’s towns. Llanhilleth’s 1,201 households held 2,450 residents at the 2021 Census. Across Llanhilleth, just over two in five adults have never married or formed a civil partnership. On one-person households, Llanhilleth sits higher than 93% of UK towns: 37%.
What the Census says about Llanhilleth’s people
More with no religion than most
60% of residents answered “no religion” in 2021 and 33% Christian, against 47% and 43% across Wales’s towns. Ethnicity & religion ↓
Written from the data on this page: ONS Census 2021 (output areas summed to the 2022 built-up area).
Half of Llanhilleth is under 42.6, younger than 65% of UK towns
Share of residents in each five-year age band, Census 2021.
The figure for residents aged 15 to 24 is 9.6% in Llanhilleth and 12% across Wales’s towns. Lower than in just over three fifths of UK towns: 20% of residents are 65 or over.
Broad ages · share of residents
Women and men · all residents
49% women, 51% men
About an even split. Across Wales, 51% of residents are women.
Full-time students make up 4.5% in Llanhilleth, less than in 63% of UK towns
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%.
Managerial and professional jobs account for 16% of Llanhilleth’s adults, routine and semi-routine work for 42%, against 29% and 27% across Wales’s towns. Lower than in nearly three quarters of UK towns: 7.6% of residents lived at another address a year earlier. The comparison figure for full-time students is 8% across Wales’s towns.
2.1 people per household, fewer than in 95% of UK towns
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.
Across Wales’s towns, the share of shared households of unrelated adults is 3.1%; Llanhilleth has 1.6%. On the census count, 24% of households have dependent children.
6.9% of households live in a detached house, below 97% 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
14% of households live in a flat or apartment across Wales’s towns, against 6.3% in Llanhilleth. As a reference point, nearly a quarter of households live in a detached house across Wales’s towns.
Only 3.2% of residents were born outside the UK in Llanhilleth
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
Against a figure of 96% across Wales’s towns, the share of residents whose main language is English in Llanhilleth comes in at 98%. The two biggest birthplaces abroad are in EU countries (2%) and in the Middle East and Asia (0.5%). Residents born outside the UK: 7.4% across Wales’s towns, for comparison.
5.3% of people in Llanhilleth speak Welsh
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
5.3% of residents aged 3 and over, 127 people, said in 2021 that they can speak Welsh, fewer than in 99% of Welsh towns (Welsh towns: 16%). In Gwent, Abertridwr and Senghenydd has the highest share (14%).
More residents with no religion than 99% of UK towns: 60%
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: 96% of Llanhilleth · Gwent’s towns 91% · Wales’s towns 90%.
Religion · all residents
Residents who describe themselves as Christian: 33% here and 43% across Wales’s towns. For comparison, 47% of residents said they have no religion across Wales’s towns. On the census count, 96% of residents describe themselves as White British.
38% of adults are married or in a civil partnership, fewer than in 95% 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
120 residents care, unpaid, for at least 50 hours a week. Compared with other places, unpaid carers are common here: 12%, more than in 96% of UK towns. By way of comparison, 43% of adults are married or in a civil partnership across Wales’s towns.
Among adults, 18% 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 18% of Llanhilleth’s adults, against 31% across Wales’s towns; 32% have no qualification (20%).
Of the 7 towns nearest Llanhilleth, 3 are older
Nearby built-up areas coloured by median age, Census 2021. Tap a town for its page.
Health, work and homes have their own pages
What this data can and can’t tell you
- “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 Llanhilleth’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 Llanhilleth’s residents
What is the population of Llanhilleth?
The 2021 Census counted 2,450 people in Llanhilleth’s built-up area.
What is the average age in Llanhilleth?
The median age was 42.6 at the 2021 Census. 9.6% of residents were 15 to 24 and 20% were 65 or over.
How diverse is Llanhilleth?
96% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 91% across Gwent’s towns. 3.2% were born outside the UK.
What religion are people in Llanhilleth?
60% said they had no religion and 33% that they were Christian at the 2021 Census; 0.2% were Muslim and 6.2% didn’t answer.
Is Llanhilleth good for families?
24% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Llanhilleth’s schools page.
How many people speak Welsh in Llanhilleth?
127 residents aged 3 and over, 5.3%, 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.