Photo: Bill Boaden · CC BY-SA 2.0Above 99% of UK towns: 42% of households are one person living alone
Here nearly two in five adults are married or in a civil partnership, where the figure across Wales’s towns is 43%. In Tremadog, just over a fifth of households have dependent children. Households in terraced houses are more common here than in 95% of UK towns. The 2021 Census counted 736 residents in 355 households.
Half of Tremadog is over 48.1, older than 75% of UK towns
Share of residents in each five-year age band, Census 2021.
9.3% of residents are aged 15 to 24, against 12% across Wales’s towns. Still, on residents aged 65 and over, Tremadog sits higher than 71% of UK towns: 25%. The biggest five-year age group is 50–54, with nearly one in ten residents.
Broad ages · share of residents
Women and men · all residents
46% women, 54% men
About 115 men for every 100 women. Across Wales, 51% of residents are women.
Below 99% of UK towns: 2.6% of adults are full-time students
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 take in just over a quarter of adults here, routine and semi-routine work 30% (Wales’s towns: 29% and 27%). For full-time students, the comparison across Wales’s towns is 8%. Residents who moved in within the year account for 7.3%.
2.1 people per household, fewer than in 93% of UK towns
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.
For Tremadog, the census puts shared households of unrelated adults at 2.3%.
Tremadog ranks above 91% of UK towns on households without a car or van: 27%
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
The share of households in detached houses is 16%, against 24% across Wales’s towns. Households in flats: just over a fifth of the total. Across Wales’s towns, 21% of households have no car or van.
Tremadog sits below 69% of UK towns for residents born outside the UK (4.6%)
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
Compared with 96% across Wales’s towns, 98% of residents have English as their main language here. The largest groups were born in EU countries (3.8%) and in the Americas, Oceania and elsewhere (0.4%). The wider picture: 7.4% of residents were born outside the UK across Wales’s towns.
Welsh speakers: 74% of Tremadog’s residents
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
At the 2021 Census, 528 residents aged 3 and over, 74%, said they can speak Welsh, against 16% across Welsh towns: more than in 97% of Welsh towns. Within Gwynedd, Caernarfon has the largest share, 82%.
95% of residents describe themselves as White British, more than in 72% 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 Tremadog · Gwynedd’s towns 93% · Wales’s towns 90%.
Religion · all residents
The share of residents with no religion is 48%, against 47% across Wales’s towns. 46% of residents describe themselves as Christian. The wider picture: nine in ten residents describe themselves as White British across Wales’s towns.
A lower share of unpaid carers than 81% of UK towns, at 8.1%
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
The share of adults who have never married is 39%, against 38% across Wales’s towns. Unpaid carers giving 50 hours or more a week: 18. As a reference point, one in ten residents give unpaid care across Wales’s towns.
Adults qualified to degree level or above: 28%
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
28% of Tremadog’s adults have a degree-level qualification, against 31% across Wales’s towns; 18% have none (20%).
Nearby, 3 of 7 towns have older populations than Tremadog
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 |
|---|---|---|---|---|---|
| Tremadog | 736 | — | 48.1 | 25% | 21% |
| Porthmadog | 2,579 | 0.9 mi | 48.3 | 28% | 22% |
| Penrhyndeudraeth | 1,463 | 3.1 mi | 45.6 | 23% | 25% |
| Criccieth | 1,737 | 4.1 mi | 56.6 | 37% | 18% |
| Harlech | 1,261 | 5.4 mi | 56 | 34% | 15% |
| Blaenau Ffestiniog | 3,449 | 9.3 mi | 43.4 | 20% | 26% |
| Penygroes | 1,793 | 9.9 mi | 45.2 | 24% | 24% |
| Pwllheli | 3,622 | 12 mi | 45.4 | 23% | 23% |
Health, work and homes have their own pages
What this data can and can’t tell you
- “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 Tremadog’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 Tremadog’s residents
What is the population of Tremadog?
The 2021 Census counted 736 people in Tremadog’s built-up area.
What is the average age in Tremadog?
The median age was 48.1 at the 2021 Census. 9.3% of residents were 15 to 24 and 25% were 65 or over.
How diverse is Tremadog?
95% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 93% across Gwynedd’s towns. 4.6% were born outside the UK.
What religion are people in Tremadog?
48% said they had no religion and 46% that they were Christian at the 2021 Census; 0% were Muslim and 5.4% didn’t answer.
Is Tremadog good for families?
21% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Tremadog’s schools page.
How many people speak Welsh in Tremadog?
528 residents aged 3 and over, 74%, 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.