Trefor’s story
4 listed buildings
Cadw lists them inside Trefor’s built-up area.
60% of its homes were built before 1919, against 15% in the typical UK town.
Explore the history →
TreforGwynedd
A village of 448 in Gwynedd, Wales.
4 places within 12 milesMap →
Photo: David Purchase · CC BY-SA 2.0
Population
448
Census 2021 · Gwynedd council
Median home
£148K
24 sales in 3 years
Median age
44.8
22% are 65+ · Gwynedd 23%
Degree level
28%
of residents 16+ · Wales 31%
Walk, cycle, bus
13%
of commuters · Wales 16%
Is Trefor a good place to live?
Trefor has fewer than 1,000 residents, too few for fair grades; the figures on this page are still real.
What makes Trefor stand out
The 3 things Trefor does most differently from other towns.
Homes built before 1919
History
Against 15% in the typical UK town
Valuation Office Agency, homes by build period.
Listed buildings per 10,000 residents
History
0 Grade II*; 3.7 times the typical UK town for its size
Cadw’s list, October 2026.
Median sale, £ thousands
Housing
47% below the typical UK town’s £277K
Standard sales, September 2023 to August 2026.
The data
Data highlights are ordered by what stands out in Trefor.
Work & commute
Long commutes are the norm in Trefor: just 19% travel under 5 km, below Gwynedd’s towns and Wales’s towns
The Census was taken on 21 March 2021, in lockdown, so 18% of workers were mainly at home; shares here are of those who travelled.
There are 0.5 jobs in Trefor for each resident in work. 87% of commuters drove, above Gwynedd’s towns (79%) and Wales’s towns (81%) alike. Also worth knowing: about 14% of its commuters stay in Trefor for work. Among 16 to 64s, 2.5% claimed unemployment benefits in 2026.
13%walk, cycle or ride
How commuters got to work · March 2021
Driving87%
On foot7%
Bus6%
Bicycle1%
19%
of commuters travel under 5 km · Wales 41%
18%
worked mainly from home in March 2021
£45K
mean household income, before tax
2.5%
of 16 to 64s claim unemployment benefits (2026)
ONS Census 2021, method of travel and distance to work · ONS small-area income · DWP claimant count · OGL
Schools
1 state school in Trefor
It is shown below. Its one primary school teaches 44 pupils.
| School | Level | Pupils | Letter |
|---|---|---|---|
| Ysgol Yr EiflLargest primary schoolPrimary | Primary | 44 | – |
Welsh Government · schools list · Wales publishes no school-level results, so its schools have no letters.The Schools page →
Housing
A home in Trefor sells for £148K, less than in both Gwynedd’s towns and Wales’s towns
Private renters make up just over one in ten households, below Gwynedd’s towns (17%) and Wales’s towns (17%) alike. Just over a quarter of households live in social housing. Households that own their home make up 59%.
£148Kmedian sale
Median sale price · Sep 2023 to Aug 2026
Trefor£148K
Typical UK town£277K
| By type | Median | Sales |
|---|---|---|
| Terraced | £145,000 | 16 |
59%
of households own their home · Wales 65%
12%
rent privately · Wales 17%
£724
average private rent a month, Gwynedd council area
£2,469
council tax, Band D, 2026–27
HM Land Registry Price Paid · ONS private rents · MHCLG / Welsh Government council tax · ONS Census 2021 tenure · OGL
Safety
Burglary and damage hit Trefor harder than Gwynedd’s towns or Wales’s towns: 14.1 per 1,000 residents a year
Reported offences in Trefor came to 28 over twelve months to August 2026; nuisance and anti-social incidents added 8. Violence came to 40.2 per 1,000 residents a year, above both Gwynedd’s towns (31.9) and Wales’s towns (33.8). 54% of the crimes fell under violence and sexual offences.
40.2violent and sexual offences per 1,000 a year
Reports by type · Sep 2025 to Aug 2026
Violence & sexual15
Public order5
Damage & arson2
Other theft2
Burglary2
Vehicle crime1
Other crime1
Shoplifting0
Anti-social8
Not gradedAnti-social behaviour, shoplifting and other theft are shown but left out of the Safety Grade, which counts violence and crimes against homes and vehicles per resident.
40.2
violent and sexual offences per 1,000 residents a year, averaged Sep 2023 to Aug 2026
14.1
burglary, vehicle crime and damage per 1,000 a year, averaged Sep 2023 to Aug 2026
20.1
anti-social behaviour reports per 1,000 (not graded)
28
crimes recorded in the 12 months to August 2026
data.police.uk street-level crime · points inside the ONS built-up-area boundary · OGL · The police category of violence and sexual offences includes harassment and stalking.
Health
Bad health is more common in Trefor than in Gwynedd’s towns or across Wales’s towns: 7.8% of residents
Trefor has no GP practice of its own; the nearest is 5.9 miles away. 22% of residents have a disability, about level with Wales’s towns (22%) and above Gwynedd’s towns (20%). The nearest A&E to Trefor is Ysbyty Gwynedd, 18.5 miles away.
78%good or very good health
General health, self-reported
Good or very good 78%Fair 14%Bad or very bad 8%
| Census 2021 | Trefor | Gwynedd | Wales |
|---|---|---|---|
| Good or very good health | 78% | 80% | 78% |
| Bad or very bad health | 7.8% | 5.5% | 7.1% |
| Disabled (Equality Act) | 22% | 20% | 22% |
Welsh towns’ Health Grades use ONS’s small-area life expectancy and healthy life expectancy for 2019 to 2023, and two Census 2021 measures, bad health and disability, adjusted for age. English towns’ also use OHID’s small-area early deaths, hospital admissions and child obesity, which OHID publishes for England only.
ONS Census 2021, general health and disability · OGL · The census answers take no account of age, so a young town looks healthier; the Health Grade relies on age-adjusted measures, life expectancy among them.
History
Old homes shape Trefor: 60% were built before 1919, more than in both Gwynedd’s towns and Wales’s towns
The heritage lists give each building’s grade but not its age, so we don’t say which is oldest.
Grade II covers all 4 listed buildings that Cadw records here. Of Trefor’s land, 8% lies in conservation areas, above Gwynedd’s towns (4%) and Wales’s towns (0%) alike. Per 10,000 residents, Trefor counts 89 listed buildings.
4listed buildings
Listed buildings by grade · Cadw
Grade I0
Grade II*0
Grade II4
0
scheduled monuments
0
registered parks and gardens
60%
of homes built before 1919 · typical UK town 15%
89
listed buildings per 10,000 residents · typical UK town 24
Cadw list, October 2026 · Valuation Office Agency, homes by build period · OGL
Who lives here
Few people in Trefor are 15 to 24: 7.9%, fewer than in both Gwynedd’s towns and Wales’s towns
Under 15: 19% of residents. Residents of Trefor have a median age of 44.8. 28% of adults hold a degree, lower than both Gwynedd’s towns (32%) and Wales’s towns (31%).
44.8median age
TreforGwyneddWales
Ages · share of residents
22%
Qualifications · residents 16 and older
No qualifications21%
Apprenticeship10%
A levels or similar18%
Degree level28%
Women and men · all residents
52% women, 48% men
About 91 men for every 100 women. Across Wales, 51% of residents are women.
| Trefor | Gwynedd | Wales | |
|---|---|---|---|
| Under 15 | 19% | 16% | 17% |
| 15–24 | 7.9% | 13% | 12% |
| 25–44 | 23% | 22% | 25% |
| 45–64 | 28% | 26% | 26% |
| 65+ | 22% | 23% | 21% |
| No qualifications | 21% | 18% | 20% |
| Apprenticeship | 10% | 6.1% | 5.6% |
| A levels or similar | 18% | 19% | 17% |
| Degree level | 28% | 32% | 31% |
ONS Census 2021 · Gwynedd and Wales: all residents of their built-up areas · OGL
Keep exploring
Everything we know about Trefor
12pages on Trefor
The big questions
Safety40.2 violent and sexual offences per 1,000 residents a year, averaged Sep 2023 to Aug 2026Cost of livingMedian home £148K · rent £724 a monthHousing7 sold in 12 months · busiest street Lime StreetSchools1 state school (no results published in Wales)HealthWork & commute43% of working residents work in the townFlood & hazards4.4% of homes at high or medium flood risk
Trefor’s neighbours
The nearest built-up areas, from ONS’s 2022 boundaries. See them on the map →
NefynPenygroesPwllheliCricciethTrefor
How the neighbours grade
| Town | People | Miles | Overall | Cost | Safety | Health |
|---|---|---|---|---|---|---|
| Trefor | 448 | — | — | — | — | — |
| Nefyn | 1,291 | 5.7 | — | B− | C | C+ |
| Penygroes | 1,793 | 7.2 | — | A− | D | C |
| Pwllheli | 3,622 | 7.3 | C | B+ | D | C |
| Criccieth | 1,737 | 9.5 | — | C | B | C+ |
Nefyn, Penygroes and Criccieth have fewer than 2,500 residents, so they get subject grades but no overall grade. People: Census 2021. Miles: centre to centre.
Questions about Trefor
How many listed buildings are there in Trefor?
4 on Cadw’s list. That is 3.7 times the typical UK town for its size.
Is Trefor expensive to live in?
Private rents in the Gwynedd council area averaged £724 a month in August 2026.
About Trefor
Village in Gwynedd, Wales
Trefor is a built-up area of 448 people, in the Gwynedd council area. TownRatings uses ONS’s 2022 built-up areas as towns: the physical town, as people mean the word, rather than a council district, so its figures cover the town itself.
Built from ONS geography and Census 2021
- Population
- 448 (Census 2021)
- Council
- Gwynedd
- County
- Gwynedd
- Region
- Wales
- Area
- 0.1 sq mi (0.2 km²)
- ONS code
- W45000156
Sources: ONS Census 2021, output areas summed to the ONS 2022 built-up area · HM Land Registry Price Paid (standard sales, September 2023 to August 2026) · ONS Price Index of Private Rents (August 2026, by council) · MHCLG and Welsh Government council tax, Band D 2026–27 (with parish precepts in England) · data.police.uk street-level crime, 36 months to August 2026, points inside the built-up-area boundary · ONS small-area life expectancy and healthy life expectancy, 2019 to 2023 (England and Wales), OHID Fingertips small-area indicators (England) and Census 2021 health, adjusted for age · ONS small-area income estimates (financial year ending 2023) · DWP claimant count via Nomis (January to August 2026) · Cadw listed buildings, scheduled monuments and registered historic parks and gardens via DataMapWales, October 2026, inside the ONS 2022 built-up-area boundary · Valuation Office Agency, Council Tax: stock of properties by build period (31 March 2025) · TownRatings grades: our own summary of the data, ranked against UK towns only. 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.