Rhostrehwfa: 34% of homes built before 1919
34% of its homes were built before 1919, against 15% in the typical UK town.
Explore the history →Each edition grades its towns against each other only.

With 546 residents, it is a village in Gwynedd, Wales.
Rhostrehwfa has fewer than 1,000 residents, too few for fair grades; the figures on this page are still real. Walking, cycling and public transport carry 2% of commuters. Just over a third of homes were built before 1919. Nearly half of households own their home with no mortgage.
The 3 things Rhostrehwfa does most differently from other towns.
34% of its homes were built before 1919, against 15% in the typical UK town.
Explore the history →Data highlights are ordered by what stands out in Rhostrehwfa.
The Census was taken on 21 March 2021, in lockdown, so 23% of workers were mainly at home; shares here are of those who travelled.
34% of commuters travelled under 5 km to work. Unemployment benefit claims came to 1.9% of 16 to 64s in 2026, below Gwynedd’s towns (3.2%) and Wales’s towns (3%) alike. Households take home £47K a year before tax, on average.
ONS Census 2021, method of travel and distance to work · ONS small-area income · DWP claimant count · OGL
Private renters make up 10% of households, below both Gwynedd’s towns (17%) and Wales’s towns (17%). 8% of households live in social housing. That is the middle of 7 standard sales inside Rhostrehwfa’s built-up area over three years, against £277,000 in the typical UK town.
| By type | Median | Sales |
|---|---|---|
| Detached | £337,500 | 6 |
HM Land Registry Price Paid · ONS private rents · MHCLG / Welsh Government council tax · ONS Census 2021 tenure · OGL
Anti-social behaviour, shown but not graded, came to 1.8 reports per 1,000, below Gwynedd’s towns (15.7) and Wales’s towns (10.4) alike. Per 1,000 residents, 2.4 burglaries and acts of damage are recorded a year. A year of reports to August 2026 adds up to 3 offences in Rhostrehwfa and 2 cases of nuisance behaviour. Of all the crimes, 100% were violence and sexual offences.
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.
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.
Poor health, by residents’ own account, affects 5.3% of the town. Seeing a GP means leaving Rhostrehwfa: the nearest practice is 1.6 miles away. The nearest A&E to Rhostrehwfa is Ysbyty Gwynedd, 8 miles away.
| Census 2021 | Rhostrehwfa | Gwynedd | Wales |
|---|---|---|---|
| Good or very good health | 79% | 80% | 78% |
| Bad or very bad health | 5.3% | 5.5% | 7.1% |
| Disabled (Equality Act) | 22% | 20% | 22% |
ONS Census 2021, general health and disability · OGL · Because the census answers ignore age, a younger population lifts them; that is why the Health Grade is built on age-adjusted measures like life expectancy.
The heritage lists give each building’s grade but not its age, so we don’t say which is oldest.
Cadw’s list has no building inside Rhostrehwfa’s built-up area.
Cadw list, October 2026 · Valuation Office Agency, homes by build period · OGL
The 15-to-24 age group: 9.1%, lower than both Gwynedd’s towns (13%) and Wales’s towns (12%). Retirement age and beyond: just over a quarter of residents are 65 or older. The median resident of Rhostrehwfa is 51.4 years old. Graduates make up 38% of adults.
48% women, 52% men
About 107 men for every 100 women. Across Wales, 51% of residents are women.
| Rhostrehwfa | Gwynedd | Wales | |
|---|---|---|---|
| Under 15 | 13% | 16% | 17% |
| 15–24 | 9.1% | 13% | 12% |
| 25–44 | 19% | 22% | 25% |
| 45–64 | 33% | 26% | 26% |
| 65+ | 26% | 23% | 21% |
| No qualifications | 15% | 18% | 20% |
| Apprenticeship | 7.4% | 6.1% | 5.6% |
| A levels or similar | 14% | 19% | 17% |
| Degree level | 38% | 32% | 31% |
ONS Census 2021 · Gwynedd and Wales: all residents of their built-up areas · OGL
Museums, castles, gardens and days out in and near Rhostrehwfa. Best known first.
Art galleryOriel Môn2 km outside town, to the northeastHistoric siteHistoric siteDin Dryfol4.2 km outside town, to the southwestAttractionAttractionRayner Memorial Clock Tower1.6 km outside town, to the northeastPhotos: each place’s Wikidata image, from Wikimedia Commons under the licence below (our copy, resized).
The nearest built-up areas, from ONS’s 2022 boundaries. See them on the map →
| Town | People | Miles | Overall | Cost | Safety | Health |
|---|---|---|---|---|---|---|
| Rhostrehwfa | 546 | — | — | — | — | — |
| Llangefni | 5,264 | 1.7 | C | A | D | C |
| Gaerwen | 1,277 | 3.3 | — | A | B− | B− |
| Llanerchymedd | 1,155 | 6 | — | A | B+ | C− |
| Llanfair Pwllgwyngyll | 2,905 | 6 | B+ | B | A− | B+ |
| Y Felinheli | 2,333 | 7 | — | B+ | B− | B− |
| Benllech | 2,072 | 7.1 | — | B− | A− | C+ |
| Bodedern | 1,193 | 7.3 | — | A− | B− | C− |
Gaerwen, Llanerchymedd, Y Felinheli, Benllech and Bodedern have fewer than 2,500 residents, so they get subject grades but no overall grade. People: Census 2021. Miles: centre to centre.
Band D council tax in Rhostrehwfa is £2,261 for 2026–27, less than in 79% of UK towns (the Isle of Anglesey council average, with police and community councils). Your own bill depends on your home’s band; check it on GOV.UK.
Police recorded 3 crimes inside Rhostrehwfa’s built-up area in the 12 months to August 2026, 100% of them violence and sexual offences, a police category that includes harassment and stalking.
Village in Gwynedd, Wales
Rhostrehwfa is a built-up area of 546 people, in the Isle of Anglesey 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
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.