Photo: Peter Craine · CC BY-SA 2.01% of households live in a flat or apartment, below 99% of UK towns
Where 29% of households live in a terraced house across Wales’s towns, Treuddyn has 6.5%. Across Treuddyn, 98% of residents describe themselves as White British. The village has fewer one-person households than 78% of UK towns, at 26%. There were 401 households in the village at the 2021 Census, home to 950 residents.
A lower share of residents aged 15 to 24 than 58% of UK towns, at 9.5%
Share of residents in each five-year age band, Census 2021.
No age band is larger than 55–59: 8.1% of residents. Half of Treuddyn’s residents are over 45, older than in 54% of UK towns. For comparison, 12% of residents are aged 15 to 24 across Wales’s towns. In Penrhyn Bay, the oldest of Clwyd’s towns by this measure, it is 34%.
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.
Only 3.6% of residents lived at another address a year earlier in Treuddyn
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%.
Here 5.7% of adults are full-time students, where the figure across Wales’s towns is 8%. For comparison, 9.1% of residents lived at another address a year earlier across Wales’s towns.
The Census was taken on 21 March 2021, in term time, so students were counted at their term addresses.
Bigger households than 70% of UK towns: 2.4 people each on average
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: 2.7%, near enough the figure across Wales’s towns. The census found that 28% of households have dependent children in Treuddyn.
Treuddyn: 34% of households live in a detached house, above 65% 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
Compared with 21% across Wales’s towns, 13% of households have no car or van here. Across the comparison, nearly a quarter of households live in a detached house across Wales’s towns.
2.6% of residents were born outside the UK, fewer than in 95% 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
In Treuddyn, 99% of residents have English as their main language, beside 96% across Wales’s towns. The largest groups were born in EU countries (1.2%) and in Africa (0.8%). Across Wales’s towns, the share of residents born outside the UK is 7.4%.
A Welsh-speaking share of 21% in Treuddyn
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
198 residents, 21% of those aged 3 and over, said they can speak Welsh at the 2021 Census, against 16% across Welsh towns: more than in 77% of Welsh towns. The highest share in Clwyd belongs to Llanfairfechan (44%).
52% of residents describe themselves as Christian, more than in 65% 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: 98% of Treuddyn · Clwyd’s towns 92% · Wales’s towns 90%.
Religion · all residents
Just over two in five residents said they have no religion; across Wales’s towns the figure is 47%. The comparison figure for residents who describe themselves as Christian is 43% across Wales’s towns.
Adults who have never married make up 33% in Treuddyn, more than in 54% 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
25 people give 50 hours or more of unpaid care a week. At 48%, the share of married adults and civil partners is higher than in 52% of UK towns. Across Wales’s towns, adults who have never married come to 38%. Compared with 10% across Wales’s towns, nearly one in ten residents give unpaid care here.
Qualified to degree level: 31% of adults
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
With 31% of its adults qualified to degree level, Treuddyn compares with 31% across Wales’s towns; another 21% hold no qualification (20%).
Around Treuddyn, 3 of 7 towns have a higher 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 |
|---|---|---|---|---|---|
| Treuddyn | 950 | — | 45 | 21% | 28% |
| Leeswood | 1,948 | 1.8 mi | 44.1 | 18% | 28% |
| Hope | 4,422 | 3.6 mi | 46.1 | 24% | 29% |
| Mold | 9,890 | 3.6 mi | 45.1 | 23% | 27% |
| Mynydd Isa | 4,738 | 3.8 mi | 50 | 29% | 25% |
| Penyffordd | 3,822 | 4.1 mi | 40.9 | 19% | 33% |
| Buckley | 13,562 | 4.2 mi | 43.3 | 20% | 28% |
| Tanyfron | 2,229 | 4.6 mi | 36.2 | 10% | 35% |
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.
- “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 Treuddyn’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 Treuddyn’s residents
What is the population of Treuddyn?
The 2021 Census counted 950 people in Treuddyn’s built-up area.
What is the average age in Treuddyn?
The median age was 45 at the 2021 Census. 9.5% of residents were 15 to 24 and 21% were 65 or over.
How diverse is Treuddyn?
98% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 92% across Clwyd’s towns. 2.6% were born outside the UK.
What religion are people in Treuddyn?
42% said they had no religion and 52% that they were Christian at the 2021 Census; 0% were Muslim and 6% didn’t answer.
Is Treuddyn good for families?
28% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Treuddyn’s schools page.
How many people speak Welsh in Treuddyn?
198 residents aged 3 and over, 21%, 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.