Brynsiencyn’s story
4 listed buildings
Cadw lists them inside Brynsiencyn’s built-up area.
38% of its homes were built before 1919, against 15% in the typical UK town.
Explore the history →
BrynsiencynGwynedd
A village of 655 in Gwynedd, Wales.
7 places within 12 milesMap →
Photo: David Dixon · CC BY-SA 2.0
Population
655
Census 2021 · Isle of Anglesey council
Median home
£169K
10 sales in 3 years
Median age
42.8
22% are 65+ · Gwynedd 23%
Degree level
29%
of residents 16+ · Wales 31%
Walk, cycle, bus
10%
of commuters · Wales 16%
Is Brynsiencyn a good place to live?
Brynsiencyn has fewer than 1,000 residents, too few for fair grades; the figures on this page are still real.
What makes Brynsiencyn stand out
The 3 things Brynsiencyn 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*; 2.5 times the typical UK town for its size
Cadw’s list, October 2026.
Median sale, £ thousands
Housing
£169K median home
39% below the typical UK town’s £277K
Standard sales, September 2023 to August 2026.
Nearby attractions
All attractions →Caernarfon and 13 more in and around Brynsiencyn
Museums, castles, gardens and days out in and near Brynsiencyn. Best known first.
FortCaernarfon4 km outside town, to the south
Castle · CadwCastell Caernarfon4.1 km outside town, to the south
Fort · CadwCaernarfon Town Walls4.1 km outside town, to the south
AquariumAnglesey Sea Zoo1.4 km outside town, to the south
MuseumRoyal Welch Fusiliers Museum4.1 km outside town, to the south
Theme parkGreenwood Family Park4.7 km outside town, to the eastPlaces: © OpenStreetMap contributors · Wikidata
Photos: each place’s Wikidata image, from Wikimedia Commons under the licence below (our copy, resized).
Photo credits (6)
- Caernarfon: Nilfanion, CC BY-SA 4.0, Wikimedia Commons
- Castell Caernarfon: Llywelyn2000, CC BY-SA 4.0, Wikimedia Commons
- Caernarfon Town Walls: Philip Halling, CC BY-SA 2.0, Wikimedia Commons
- Anglesey Sea Zoo: Lynne Kirton, CC BY-SA 2.0, Wikimedia Commons
- Royal Welch Fusiliers Museum: Alan Fryer, CC BY-SA 2.0, Wikimedia Commons
- Greenwood Family Park: TCExplorer, CC BY-SA 2.0, Wikimedia Commons
The data
Data highlights are ordered by what stands out in Brynsiencyn.
Work & commute
Fewer commuters in Brynsiencyn work nearby than in Gwynedd’s towns or Wales’s towns: 24% travel under 5 km
The Census was taken on 21 March 2021, in lockdown, so 22% of workers were mainly at home; shares here are of those who travelled.
That puts Brynsiencyn below both Gwynedd’s towns (39%) and Wales’s towns (41%). 10% of commuters went to work on foot, by bike or by public transport at the census.
10%walk, cycle or ride
How commuters got to work · March 2021
Driving88%
On foot6%
Bus3%
24%
of commuters travel under 5 km · Wales 41%
22%
worked mainly from home in March 2021
£45K
mean household income, before tax
3.3%
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 Brynsiencyn
Its one school is below. Wales publishes no school-level results, so its schools have no letters.
| School | Level | Pupils | Letter |
|---|---|---|---|
| Ysgol Gynradd BrynsiencynLargest primary schoolPrimary | Primary | 35 | – |
Welsh Government · schools listThe Schools page →
Housing
More households in Brynsiencyn live in social housing than in Gwynedd’s towns or Wales’s towns: 26%
On this, Brynsiencyn is above both Gwynedd’s towns (19%) and Wales’s towns (18%). Owners make up 58% of households.
£169Kmedian sale
Median sale price · Sep 2023 to Aug 2026
Brynsiencyn£169K
Typical UK town£277K
58%
of households own their home · Wales 65%
15%
rent privately · Wales 17%
£714
average private rent a month, Isle of Anglesey council area
£2,261
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
Brynsiencyn records more violent crime per resident than Gwynedd’s towns or Wales’s towns, at 41.7 per 1,000 a year
In the comparison, Brynsiencyn comes above both Gwynedd’s towns (31.9) and Wales’s towns (33.8). Burglary and damage come to 12.7 per 1,000 residents a year. Police recorded 53 crimes inside Brynsiencyn’s built-up area in the 12 months to August 2026, plus 20 reports of anti-social behaviour.
41.7violent and sexual offences per 1,000 a year
Reports by type · Sep 2025 to Aug 2026
Violence & sexual26
Other theft7
Damage & arson5
Other crime4
Public order3
Burglary3
Vehicle crime2
Shoplifting1
Anti-social20
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.
41.7
violent and sexual offences per 1,000 residents a year, averaged Sep 2023 to Aug 2026
12.7
burglary, vehicle crime and damage per 1,000 a year, averaged Sep 2023 to Aug 2026
17.3
anti-social behaviour reports per 1,000 (not graded)
53
crimes recorded in the 12 months to August 2026
data.police.uk street-level crime · points inside the ONS built-up-area boundary · OGL
Health
Disability is less common in Brynsiencyn, 19% of residents, than in Gwynedd’s towns and Wales’s towns
For Brynsiencyn, that is below both Gwynedd’s towns (20%) and Wales’s towns (22%). Brynsiencyn has no GP practice of its own; the nearest is 2.2 miles away. These answers aren’t adjusted for age, so young towns look healthier; the Health Grade uses age-adjusted measures, including life expectancy.
82%good or very good health
General health, self-reported
Good or very good 82%Fair 12%Bad or very bad 7%
| Census 2021 | Brynsiencyn | Gwynedd | Wales |
|---|---|---|---|
| Good or very good health | 82% | 80% | 78% |
| Bad or very bad health | 6.6% | 5.5% | 7.1% |
| Disabled (Equality Act) | 19% | 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
History
4 listed buildings, 0 of them Grade I
The heritage lists give each building’s grade but not its age, so we don’t say which is oldest.
Brynsiencyn has 4 listed buildings inside its built-up area on Cadw’s list: 0 Grade I, 0 Grade II*. 38% of its homes were built before 1919.
4listed buildings
Listed buildings by grade · Cadw
Grade I0
Grade II*0
Grade II4
0
scheduled monuments
0
registered parks and gardens
38%
of homes built before 1919 · typical UK town 15%
61
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
Children make up 18% of Brynsiencyn, above Gwynedd’s towns and Wales’s towns
Brynsiencyn sits above both Gwynedd’s towns (16%) and Wales’s towns (17%) on this measure. The median resident of Brynsiencyn is 42.8 years old.
42.8median age
BrynsiencynGwyneddWales
Ages · share of residents
22%
Qualifications · residents 16 and older
No qualifications22%
Apprenticeship8%
A levels or similar14%
Degree level29%
Women and men · all residents
47% women, 53% men
About 111 men for every 100 women. Across Wales, 51% of residents are women.
| Brynsiencyn | Gwynedd | Wales | |
|---|---|---|---|
| Under 15 | 18% | 16% | 17% |
| 15–24 | 12% | 13% | 12% |
| 25–44 | 23% | 22% | 25% |
| 45–64 | 26% | 26% | 26% |
| 65+ | 22% | 23% | 21% |
| No qualifications | 22% | 18% | 20% |
| Apprenticeship | 7.6% | 6.1% | 5.6% |
| A levels or similar | 14% | 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 Brynsiencyn
13pages on Brynsiencyn
The big questions
Safety41.7 violent and sexual offences per 1,000 residents a year, averaged Sep 2023 to Aug 2026Cost of livingMedian home £169K · rent £714 a monthHousing3 sold in 12 monthsSchools1 state school (no results published in Wales)HealthWork & commute41% of working residents work in the townFlood & hazards0.2% of homes at high or medium flood risk
Brynsiencyn’s neighbours
The nearest built-up areas, from ONS’s 2022 boundaries. See them on the map →
Y FelinheliCaernarfonBethelGaerwenLlanrugLlanfair PwllgwyngyllMenai BridgeBrynsiencyn
How the neighbours grade
| Town | People | Miles | Overall | Cost | Safety | Health |
|---|---|---|---|---|---|---|
| Brynsiencyn | 655 | — | — | — | — | — |
| Y Felinheli | 2,333 | 2.5 | — | B+ | B− | B− |
| Caernarfon | 9,831 | 2.7 | C | B+ | D− | C− |
| Bethel | 1,091 | 2.8 | — | B | A | B− |
| Gaerwen | 1,277 | 3 | — | A | B− | B− |
| Llanrug | 1,537 | 4 | — | B | B | B− |
| Llanfair Pwllgwyngyll | 2,905 | 4.3 | B+ | B | A− | B+ |
| Menai Bridge | 3,045 | 5.5 | B | A− | C | B |
Y Felinheli, Bethel, Gaerwen and Llanrug have fewer than 2,500 residents, so they get subject grades but no overall grade. People: Census 2021. Miles: centre to centre.
Questions about Brynsiencyn
How many listed buildings are there in Brynsiencyn?
4 on Cadw’s list. That is 2.5 times the typical UK town for its size.
Is Brynsiencyn expensive to live in?
Private rents in the Isle of Anglesey council area averaged £714 a month in August 2026.
How much is council tax in Brynsiencyn?
Band D council tax in Brynsiencyn 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.
About Brynsiencyn
Village in Gwynedd, Wales
Brynsiencyn is a built-up area of 655 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
- Population
- 655 (Census 2021)
- Council
- Isle of Anglesey
- County
- Gwynedd
- Region
- Wales
- Area
- 0.1 sq mi (0.2 km²)
- ONS code
- W45000096
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.