Llanllyfni’s story
4 listed buildings, 1 of them Grade II*
Cadw lists them inside Llanllyfni’s built-up area.
65% of its homes were built before 1919, against 15% in the typical UK town.
Explore the history →
LlanllyfniGwynedd
In Gwynedd, Wales, this village has 352 residents.
7 places within 12 milesMap →
Photo: David Medcalf · CC BY-SA 2.0
Population
352
Census 2021 · Gwynedd council
Median home
£115K
11 sales in 3 years
Median age
39.6
17% are 65+ · Gwynedd 23%
Degree level
29%
of residents 16+ · Wales 31%
Walk, cycle, bus
10%
of commuters · Wales 16%
Is Llanllyfni a good place to live?
With fewer than 1,000 residents, Llanllyfni is too small for fair grades, though the figures on this page are real. Nearly two thirds of its homes date from before 1919. Its listed buildings number 4, with 0 at Grade I. The median sale price is £115,000.
What makes Llanllyfni stand out
The 3 things Llanllyfni does most differently from other towns.
Homes built before 1919
History
65% of homes built before 1919
Against 15% in the typical UK town
Valuation Office Agency, homes by build period.
Listed buildings per 10,000 residents
History
1 Grade II*, including Church of St Rhedyw; 4.7 times the typical UK town for its size
Cadw’s list, October 2026.
Median sale, £ thousands
Housing
58% 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 Llanllyfni.
Work & commute
Under 5 km to work: 24% in Llanllyfni, fewer than in both Gwynedd’s towns and Wales’s towns
The Census was taken on 21 March 2021, in lockdown, so 14% of workers were mainly at home; shares here are of those who travelled.
The census found 10% of commuters going to work on foot, by bike or by public transport. Working mainly from home: 14% of workers, below both Gwynedd’s towns (20%) and Wales’s towns (24%). Also worth knowing: the 2026 claimant rate among 16 to 64s was 2.2%.
10%walk, cycle or ride
How commuters got to work · March 2021
Driving88%
On foot6%
Bus4%
Bicycle1%
24%
of commuters travel under 5 km · Wales 41%
14%
worked mainly from home in March 2021
£44K
mean household income, before tax
2.2%
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
Housing
More households own their home in Llanllyfni than in Gwynedd’s towns or across Wales’s towns: 70%
Social housing holds 13% of households. Private rents average £724 a month across the Gwynedd council area. 17% of households rent privately.
£115Kmedian sale
Median sale price · Sep 2023 to Aug 2026
Llanllyfni£115K
Typical UK town£277K
| By type | Median | Sales |
|---|---|---|
| Terraced | £122,500 | 10 |
70%
of households own their home · Wales 65%
17%
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
Violent crime runs high in Llanllyfni: 77.7 per 1,000 residents a year, above Gwynedd’s towns and Wales’s towns
Anti-social behaviour, shown but not graded, came to 48.3 reports per 1,000, higher than both Gwynedd’s towns (15.7) and Wales’s towns (10.4). Over the year to August 2026, 30 offences were reported in Llanllyfni, along with 10 incidents of anti-social behaviour. Violence and sexual offences accounted for 73% of recorded crime.
77.7violent and sexual offences per 1,000 a year
Reports by type · Sep 2025 to Aug 2026
Violence & sexual22
Other theft4
Public order3
Damage & arson1
Shoplifting0
Burglary0
Drugs0
Vehicle crime0
Anti-social10
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.
77.7
violent and sexual offences per 1,000 residents a year, averaged Sep 2023 to Aug 2026
10.4
burglary, vehicle crime and damage per 1,000 a year, averaged Sep 2023 to Aug 2026
48.3
anti-social behaviour reports per 1,000 (not graded)
30
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
Fewer people in Llanllyfni live with a disability than in Gwynedd’s towns or across Wales’s towns: 14%
Self-reported good health: 86% of Llanllyfni’s residents. 4.2% of residents described their health as bad or very bad, below Gwynedd’s towns (5.5%) and Wales’s towns (7.1%) alike. This Gwynedd town has no GP practice of its own; the nearest is 0.7 miles away.
86%good or very good health
General health, self-reported
Good or very good 86%Fair 10%Bad or very bad 4%
| Census 2021 | Llanllyfni | Gwynedd | Wales |
|---|---|---|---|
| Good or very good health | 86% | 80% | 78% |
| Bad or very bad health | 4.2% | 5.5% | 7.1% |
| Disabled (Equality Act) | 14% | 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 · No age adjustment applies to these census answers, which flatter younger towns; the Health Grade’s measures, life expectancy among them, do allow for age.
History
Llanllyfni keeps more of its old housing than Gwynedd’s towns or Wales’s towns: 65% built before 1919
The heritage lists give each building’s grade but not its age, so we don’t say which is oldest.
Scaled to its population, Llanllyfni has 114 listed buildings per 10,000 people, above both Gwynedd’s towns (77) and Wales’s towns (18).
4listed buildings
Listed buildings by grade · Cadw
Grade I0
Grade II*1
Grade II3
Among them · Grade II*
- Church of St Rhedyw Grade II*
0
scheduled monuments
0
registered parks and gardens
65%
of homes built before 1919 · typical UK town 15%
114
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
Llanllyfni has fewer older residents than Gwynedd’s towns or Wales’s towns: 17% are 65 or over
Graduates make up 29% of adults. 18% are under 15, higher than both Gwynedd’s towns (16%) and Wales’s towns (17%). Typical age in Llanllyfni: 39.6, the median. The share aged 15 to 24 is 12%.
39.6median age
LlanllyfniGwyneddWales
Ages · share of residents
12%
Qualifications · residents 16 and older
No qualifications14%
Apprenticeship7%
A levels or similar22%
Degree level29%
Women and men · all residents
52% women, 48% men
About 91 men for every 100 women. Across Wales, 51% of residents are women.
| Llanllyfni | Gwynedd | Wales | |
|---|---|---|---|
| Under 15 | 18% | 16% | 17% |
| 15–24 | 12% | 13% | 12% |
| 25–44 | 26% | 22% | 25% |
| 45–64 | 27% | 26% | 26% |
| 65+ | 17% | 23% | 21% |
| No qualifications | 14% | 18% | 20% |
| Apprenticeship | 6.7% | 6.1% | 5.6% |
| A levels or similar | 22% | 19% | 17% |
| Degree level | 29% | 32% | 31% |
ONS Census 2021 · Gwynedd and Wales: all residents of their built-up areas · OGL
Keep exploring
Everything we know about Llanllyfni
14pages on Llanllyfni
The big questions
Safety77.7 violent and sexual offences per 1,000 residents a year, averaged Sep 2023 to Aug 2026Cost of livingMedian home £115K · rent £724 a monthHousing3 sold in 12 months · busiest street Rhedyw RoadSchoolsHealthWork & commute30% of working residents work in the townFlood & hazards0.8% of homes at high or medium flood risk
Llanllyfni’s neighbours
The nearest built-up areas, from ONS’s 2022 boundaries. See them on the map →
PenygroesCaernarfonLlanrugLlanberisCricciethBethelClwt-y-bontLlanllyfni
How the neighbours grade
| Town | People | Miles | Overall | Cost | Safety | Health |
|---|---|---|---|---|---|---|
| Llanllyfni | 352 | — | — | — | — | — |
| Penygroes | 1,793 | 0.8 | — | A− | D | C |
| Caernarfon | 9,831 | 6.7 | C | B+ | D− | C− |
| Llanrug | 1,537 | 8.2 | — | B | B | B− |
| Llanberis | 1,838 | 8.3 | — | B | C | C |
| Criccieth | 1,737 | 8.7 | — | C | B | C+ |
| Bethel | 1,091 | 9.1 | — | B | A | B− |
| Clwt-y-bont | 1,385 | 9.6 | — | A | C | C− |
Penygroes, Llanrug, Llanberis, Criccieth, Bethel and Clwt-y-bont have fewer than 2,500 residents, so they get subject grades but no overall grade. People: Census 2021. Miles: centre to centre.
Questions about Llanllyfni
How many listed buildings are there in Llanllyfni?
4 on Cadw’s list, 1 of them Grade II*. That is 4.7 times the typical UK town for its size.
About Llanllyfni
Village in Gwynedd, Wales
Llanllyfni is a built-up area of 352 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
- 352 (Census 2021)
- Council
- Gwynedd
- County
- Gwynedd
- Region
- Wales
- Area
- 0.1 sq mi (0.3 km²)
- ONS code
- W45000148
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.