Photo: David Medcalf · CC BY-SA 2.0Rhostryfan sits below 98% of UK towns for households in flats (1.6%)
In Rhostryfan, 48% of households live in a detached house, beside 24% across Wales’s towns. The share of residents who describe themselves as White British stands at 96%. Shared households of unrelated adults are rarer here than in 99% of UK towns. The village counted 308 residents and 128 households at the 2021 Census.
In Rhostryfan, 18% of residents are 65 or over, fewer than in 74% of UK towns
Share of residents in each five-year age band, Census 2021.
The biggest five-year age group is 55–59, with 10% of residents, 1.5 times the share across Wales’s towns. Residents aged 15 to 24 account for 11%. Half of Rhostryfan’s residents are under 43.4, younger than in 58% of UK towns. Across Wales’s towns, 21% of residents are 65 or over.
Broad ages · share of residents
Women and men · all residents
53% women, 47% men
About 90 men for every 100 women. Across Wales, 51% of residents are women.
A higher share of full-time students than 80% of UK towns, at 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%.
Managerial and professional jobs account for 34% of Rhostryfan’s adults, routine and semi-routine work for 22%, against 29% and 27% across Wales’s towns. As a reference point, 8% of adults are full-time students across Wales’s towns. Locally, just over one in ten residents lived at another address a year earlier.
The Census was taken on 21 March 2021, in term time, so students were counted at their term addresses.
Rhostryfan ranks above 81% of UK towns on households with dependent children: 31%
Household make-up at the 2021 Census. Each square is 1% of households.
Against Gwynedd’s towns and Wales’s towns
People per household
Wales’s towns.
Households in Rhostryfan hold 2.4 people on average (Wales’s towns: 2.3). On average, 27% of households have dependent children across Wales’s towns. In Rhostryfan, 28% of households are one person living alone.
A lower share of households without a car or van than 91% of UK towns, at 8.1%
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
With households in terraced houses at 15%, Rhostryfan is behind 72% of UK towns on that count. Set beside that, 21% of households have no car or van across Wales’s towns.
Rhostryfan sits below 92% of UK towns for residents born outside the UK (2.9%)
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
The share of residents whose main language is English is 100%, against 96% across Wales’s towns. Across Wales’s towns, 7.4% of residents were born outside the UK. Most residents from abroad were born in EU countries (2.3%) or in the Middle East and Asia (0.3%).
In Rhostryfan, 81% of residents can speak Welsh
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
Asked in 2021, 239 residents aged 3 and over, 81%, said they can speak Welsh; across Welsh towns, 16%: more than in 99% of Welsh towns. In Gwynedd, Caernarfon has the highest share (82%).
Below 76% of UK towns: 46% of residents describe themselves as Christian
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 Rhostryfan · Gwynedd’s towns 93% · Wales’s towns 90%.
Religion · all residents
Residents with no religion: 47%, near enough the figure across Wales’s towns. Against that, 43% of residents describe themselves as Christian across Wales’s towns.
Rhostryfan ranks above 70% of UK towns on married adults and civil partners: 51%
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
With adults who have never married at 31%, Rhostryfan is behind 60% of UK towns on that count. Compared with other places, unpaid carers are scarce here: 8.9%, fewer than in 62% of UK towns. For comparison, 43% of adults are married or in a civil partnership across Wales’s towns. Unpaid care takes 50 hours a week or more for 9 people.
Adults qualified to degree level or above: 36%
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
36% of Rhostryfan’s adults have a degree-level qualification, against 31% across Wales’s towns; 14% have none (20%).
3 of the 7 nearest towns are older than Rhostryfan
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 |
|---|---|---|---|---|---|
| Rhostryfan | 308 | — | 43.4 | 18% | 31% |
| Caernarfon | 9,831 | 3.1 mi | 39.6 | 19% | 28% |
| Penygroes | 1,793 | 3.3 mi | 45.2 | 24% | 24% |
| Llanrug | 1,537 | 4.3 mi | 41.2 | 22% | 34% |
| Bethel | 1,091 | 5.1 mi | 44.7 | 24% | 32% |
| Llanberis | 1,838 | 5.2 mi | 44.5 | 20% | 25% |
| Clwt-y-bont | 1,385 | 6 mi | 39 | 17% | 31% |
| Y Felinheli | 2,333 | 6.2 mi | 42.9 | 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.
- “Gwynedd’s towns” and “Wales’s towns” mean their built-up areas. Census comparisons pool every built-up area in Gwynedd (or Wales), summed the same way as Rhostryfan’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 Rhostryfan’s residents
What is the population of Rhostryfan?
The 2021 Census counted 308 people in Rhostryfan’s built-up area.
What is the average age in Rhostryfan?
The median age was 43.4 at the 2021 Census. 11% of residents were 15 to 24 and 18% were 65 or over.
How diverse is Rhostryfan?
96% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 93% across Gwynedd’s towns. 2.9% were born outside the UK.
What religion are people in Rhostryfan?
47% said they had no religion and 46% that they were Christian at the 2021 Census; 0% were Muslim and 6.8% didn’t answer.
Is Rhostryfan good for families?
31% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Rhostryfan’s schools page.
How many people speak Welsh in Rhostryfan?
239 residents aged 3 and over, 81%, 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.