Photo: Keith Williamson · CC BY-SA 2.0Benllech is older than 99% of UK towns: a median age of 62
Here 13% of households have dependent children, where the figure across Wales’s towns is 27%. The census found that 4.3% of households live in a terraced house in Benllech. Higher than in 98% of UK towns: 97% of residents describe themselves as White British. At the 2021 Census, 2,072 people lived in the village, in 1,072 households.
What the Census says about Benllech’s people
A Welsh-speaking village
852 residents, 42% of those aged 3 and over, said they can speak Welsh in 2021, more than in 88% of Welsh towns. Welsh language ↓
Older than most towns
Half of Benllech’s residents are under 62 and half over, against 44.4 in the typical UK town. 45% are 65 or over, against 21% across Wales’s towns. Ages ↓
Written from the data on this page: ONS Census 2021 (output areas summed to the 2022 built-up area).
45% of Benllech is 65 or over, a higher share than 99% of UK towns
Share of residents in each five-year age band, Census 2021.
No age band is larger than 70–74: 12% of residents, 2.1 times the share across Wales’s towns. Here, 6.6% of residents are aged 15 to 24. Set beside that, 21% of residents are 65 or over across Wales’s towns.
Broad ages · share of residents
Women and men · all residents
52% women, 48% men
About 91 men for every 100 women. Across Wales, 51% of residents are women. Women live longer than men, so towns with many older residents have more women.
In Benllech, 3.2% of adults are full-time students, fewer than in 97% of UK towns
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%.
Across Wales’s towns, 9.1% of residents lived at another address a year earlier; in Benllech, 6.2%. Typically, 8% of adults are full-time students across Wales’s towns.
A higher share of one-person households than 96% of UK towns, at 38%
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.
1.8% of households are unrelated adults sharing a home, against 3.1% across Wales’s towns. Across the comparison, nearly a third of households are one person living alone across Wales’s towns. A household here holds 1.9 people on average.
Above 99% of UK towns: 74% of households live in a detached house
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
By its share of households in flats (8.9%), Benllech is below 61% of UK towns. Set beside that, 24% of households live in a detached house across Wales’s towns. The share of households without a car or van stands at 13%.
Fewer residents born abroad than 93% of UK towns: 2.8%
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
Most residents from abroad were born in EU countries (1.4%) or in Africa (0.5%). On residents whose main language is English, Benllech sits higher than 97% of UK towns: 99%. Set beside that, 7.4% of residents were born outside the UK across Wales’s towns.
Benllech’s residents: 42% speak Welsh
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
The 2021 Census found 852 Welsh speakers aged 3 and over, 42% of that age group, against 16% across Welsh towns: more than in 88% of them. No town in Gwynedd beats Caernarfon (82%).
Benllech: 60% of residents describe themselves as Christian, above 94% 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: 97% of Benllech · Gwynedd’s towns 93% · Wales’s towns 90%.
Religion · all residents
Asked about religion, 34% answered none, against 47% across Wales’s towns. Residents who describe themselves as Christian make up 43% across Wales’s towns.
Adults who have never married: 21%, a lower share than 99% of UK towns
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
Across Wales’s towns, 43% of adults are married or in a civil partnership; in Benllech, 55%. More unpaid carers than in 96% of UK towns: 12%. Against that, 38% of adults have never married or formed a civil partnership across Wales’s towns. Unpaid carers giving 50 hours or more a week: 84.
The share of adults with a degree-level qualification: 33%
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
Across Wales’s towns, 31% of adults have a degree-level qualification; in Benllech, 33%, and 20% have none, against 20%.
Every nearby town is younger than Benllech
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 |
|---|---|---|---|---|---|
| Benllech | 2,072 | — | 62 | 45% | 13% |
| Llangefni | 5,264 | 5.5 mi | 39.5 | 20% | 31% |
| Llanerchymedd | 1,155 | 6.1 mi | 44.3 | 21% | 30% |
| Beaumaris | 1,120 | 6.7 mi | 58.1 | 39% | 17% |
| Llanfair Pwllgwyngyll | 2,905 | 6.7 mi | 52 | 33% | 22% |
| Menai Bridge | 3,045 | 6.8 mi | 47.3 | 24% | 20% |
| Gaerwen | 1,277 | 7.1 mi | 39.8 | 19% | 30% |
| Amlwch | 3,148 | 7.8 mi | 46.6 | 23% | 26% |
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 Benllech’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 Benllech’s residents
What is the population of Benllech?
The 2021 Census counted 2,072 people in Benllech’s built-up area.
What is the average age in Benllech?
The median age was 62 at the 2021 Census. 6.6% of residents were 15 to 24 and 45% were 65 or over.
How diverse is Benllech?
97% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 93% across Gwynedd’s towns. 2.8% were born outside the UK.
What religion are people in Benllech?
34% said they had no religion and 60% that they were Christian at the 2021 Census; 0.4% were Muslim and 4.9% didn’t answer.
Is Benllech good for families?
13% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Benllech’s schools page.
How many people speak Welsh in Benllech?
852 residents aged 3 and over, 42%, 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.