Glan Gwna Hall · Photo: Dawnswraig · CC BY-SA 4.0Households in flats make up 1.8% in Caeathro, less than in 97% of UK towns
Here 37% of households are one person living alone, where the figure across Wales’s towns is 32%. More households in detached houses than in 80% of UK towns: 42%. Caeathro’s 107 households held 248 residents at the 2021 Census. In Caeathro, 95% of residents describe themselves as White British.
Residents aged 15 to 24 make up 10% in Caeathro, more than in 63% of UK towns
Share of residents in each five-year age band, Census 2021.
No age band is larger than 55–59: 8.1% of residents. As a reference point, 12% of residents are aged 15 to 24 across Wales’s towns. Half of Caeathro’s residents are over 45, older than in 54% of UK towns. In Tywyn, the oldest of Gwynedd’s towns by this measure, it is 36%.
Broad ages · share of residents
Women and men · all residents
53% women, 47% men
About 88 men for every 100 women. Across Wales, 51% of residents are women.
Residents who moved in within the year: 4.9%, 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%.
Managerial and professional jobs account for 39% of Caeathro’s adults, routine and semi-routine work for 22%, against 29% and 27% across Wales’s towns. Across Caeathro, 7.7% of adults are full-time students. Typically, nearly one in ten 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.
Fewer households with dependent children than 70% of UK towns: 25%
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.
Nothing unusual on shared households of unrelated adults: 2.8%, close to the figure across Wales’s towns. Against that, 27% of households have dependent children across Wales’s towns.
A lower share of households without a car or van than 91% of UK towns, at 8.3%
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
By its share of households in terraced houses (31%), Caeathro is above 85% of UK towns. Elsewhere, just over a fifth of households have no car or van across Wales’s towns.
Fewer residents born abroad than 62% of UK towns: 5.2%
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
96% of residents have English as their main language across Wales’s towns, against 98% in Caeathro. Residents born outside the UK: 7.4% across Wales’s towns, for comparison. Among residents born abroad, the largest groups were born in the Middle East and Asia (3.2%) and in EU countries (1.2%).
Welsh is spoken by 82% of Caeathro’s residents
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
The 2021 Census found 199 Welsh speakers aged 3 and over, 82% of that age group, against 16% across Welsh towns: more than in 99% of them. Within Gwynedd, Caernarfon has the largest share, 82%.
In Caeathro, 46% of residents describe themselves as Christian, fewer than in 73% 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 Caeathro · Gwynedd’s towns 93% · Wales’s towns 90%.
Religion · all residents
Compared with 47% across Wales’s towns, 46% of residents said they have no religion here. To put it in context, 43% of residents describe themselves as Christian across Wales’s towns. Muslims make up 1.6% of residents.
Married adults and civil partners: 50%, a higher share than 64% 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
Across Wales’s towns, 38% of adults have never married or formed a civil partnership; in Caeathro, 31%. The wider picture: 43% of adults are married or in a civil partnership across Wales’s towns. Here, just over one in ten residents give unpaid care.
The share of adults with a degree-level qualification: 45%
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
With 45% of its adults qualified to degree level, Caeathro compares with 31% across Wales’s towns; another 7.2% hold no qualification (20%). Students still working towards a degree help explain why A levels are the highest qualification of 21%.
1 of the 7 nearest towns are older than Caeathro
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 |
|---|---|---|---|---|---|
| Caeathro | 248 | — | 45 | 22% | 25% |
| Caernarfon | 9,831 | 1.1 mi | 39.6 | 19% | 28% |
| Llanrug | 1,537 | 2.5 mi | 41.2 | 22% | 34% |
| Bethel | 1,091 | 2.9 mi | 44.7 | 24% | 32% |
| Y Felinheli | 2,333 | 3.9 mi | 42.9 | 21% | 25% |
| Clwt-y-bont | 1,385 | 4.8 mi | 39 | 17% | 31% |
| Llanberis | 1,838 | 4.8 mi | 44.5 | 20% | 25% |
| Penygroes | 1,793 | 5.6 mi | 45.2 | 24% | 24% |
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 Caeathro’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 Caeathro’s residents
What is the population of Caeathro?
The 2021 Census counted 248 people in Caeathro’s built-up area.
What is the average age in Caeathro?
The median age was 45 at the 2021 Census. 10% of residents were 15 to 24 and 22% were 65 or over.
How diverse is Caeathro?
95% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 93% across Gwynedd’s towns. 5.2% were born outside the UK.
What religion are people in Caeathro?
46% said they had no religion and 46% that they were Christian at the 2021 Census; 1.6% were Muslim and 4% didn’t answer.
Is Caeathro good for families?
25% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Caeathro’s schools page.
How many people speak Welsh in Caeathro?
199 residents aged 3 and over, 82%, 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.