Photo: Llywelyn2000 · CC BY-SA 4.0Trefnant is older than 93% of UK towns: a median age of 52.3
In Trefnant, 95% of residents describe themselves as White British, beside 90% across Wales’s towns. 933 residents in 384 households: that is Trefnant at the 2021 Census. Households in detached houses account for 59%. Few places have so few households in flats: 1.1% here, fewer than in 99% of UK towns.
More residents aged 65 and over than 88% of UK towns: 29%
Share of residents in each five-year age band, Census 2021.
Across Wales’s towns, the share of residents aged 15 to 24 is 12%; Trefnant has 8.4%. Typically, 21% of residents are 65 or over across Wales’s towns.
Broad ages · share of residents
Women and men · all residents
53% women, 47% men
About 89 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.
Full-time students: 3%, a lower share than 99% 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%.
Residents who moved in within the year make up 7.5%, against 9.1% across Wales’s towns. Across Wales’s towns, the share of full-time students is 8%.
Only 24% of households have dependent children in Trefnant
Household make-up at the 2021 Census. Each square is 1% of households.
Against Clwyd’s towns and Wales’s towns
People per household
Wales’s towns.
Shared households of unrelated adults make up 1.6%, against 3.1% across Wales’s towns. On average, 27% of households have dependent children across Wales’s towns. The average household has 2.2 people. Trefnant has more one-person households than 58% of UK towns, at 31%.
Only 7.1% of households live in a terraced house in Trefnant
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
Across Wales’s towns, just over a fifth of households have no car or van; in Trefnant, 12%. The share of households in terraced houses across Wales’s towns is 29%.
Trefnant: 100% of residents have English as their main language, above 99% of UK towns
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
With residents born outside the UK at 3.2%, Trefnant is behind 88% of UK towns on that count. As a reference point, 96% of residents have English as their main language across Wales’s towns. Residents born abroad were most often born in EU countries (1.3%), then in the Middle East and Asia (1.1%).
Trefnant’s residents: 26% speak Welsh
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
Asked in 2021, 236 residents aged 3 and over, 26%, said they can speak Welsh; across Welsh towns, 16%: more than in 80% of Welsh towns. No town in Clwyd beats Llanfairfechan (44%).
Residents who describe themselves as Christian: 58%, a higher share than 89% 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: 95% of Trefnant · Clwyd’s towns 92% · Wales’s towns 90%.
Religion · all residents
38% of residents said they have no religion, against 47% across Wales’s towns. Set beside that, 43% of residents describe themselves as Christian across Wales’s towns. Of the other groups, the largest are Other White (2.4%), African (0.4%) and Mixed or multiple (0.3%).
35% of adults have never married or formed a civil partnership, a share 64% 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
Little separates the share of unpaid carers here, 9.9%, from the figure across Wales’s towns. 43% of adults are married or in a civil partnership, fewer than in 79% of UK towns. Across the comparison, 38% of adults have never married or formed a civil partnership across Wales’s towns.
Adults with a degree-level qualification: 32%
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
At degree level, Trefnant counts 32% of its adults, against 31% across Wales’s towns; at the other end, 24% have no qualification (20%).
The towns around Trefnant are all younger
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 |
|---|---|---|---|---|---|
| Trefnant | 933 | — | 52.3 | 29% | 24% |
| St Asaph | 3,483 | 2.5 mi | 48.7 | 26% | 24% |
| Denbigh | 8,072 | 2.7 mi | 43.5 | 21% | 27% |
| Bodelwyddan | 1,785 | 4.6 mi | 42.2 | 20% | 30% |
| Rhuddlan | 3,791 | 5 mi | 50.8 | 29% | 21% |
| Dyserth | 2,038 | 5.1 mi | 48.9 | 24% | 25% |
| Meliden | 2,002 | 6.4 mi | 46.3 | 24% | 27% |
| Kinmel Bay | 9,016 | 6.7 mi | 50.3 | 28% | 25% |
Health, work and homes have their own pages
What this data can and can’t tell you
- “Clwyd’s towns” and “Wales’s towns” mean their built-up areas. Census comparisons pool every built-up area in Clwyd (or Wales), summed the same way as Trefnant’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 Trefnant’s residents
What is the population of Trefnant?
The 2021 Census counted 933 people in Trefnant’s built-up area.
What is the average age in Trefnant?
The median age was 52.3 at the 2021 Census. 8.4% of residents were 15 to 24 and 29% were 65 or over.
How diverse is Trefnant?
95% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 92% across Clwyd’s towns. 3.2% were born outside the UK.
What religion are people in Trefnant?
38% said they had no religion and 58% that they were Christian at the 2021 Census; 0.1% were Muslim and 3.9% didn’t answer.
Is Trefnant good for families?
24% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Trefnant’s schools page.
How many people speak Welsh in Trefnant?
236 residents aged 3 and over, 26%, 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.