Photo: Roger Cornfoot · CC BY-SA 2.0A Welsh-speaking town: 59% of Amlwch’s residents speak Welsh
One-person households: 35%, above 89% of UK towns. At the 2021 Census, 3,148 people lived in Amlwch, in 1,461 households. Here, 96% of residents describe themselves as White British. 41% of adults are married or in a civil partnership, fewer than in 87% of UK towns.
What the Census says about Amlwch’s people
A Welsh-speaking town
1,811 residents, 59% of those aged 3 and over, said they can speak Welsh in 2021, more than in 94% of Welsh towns. Welsh language ↓
Written from the data on this page: ONS Census 2021 (output areas summed to the 2022 built-up area).
A median age of 46.6: Amlwch is older than 66% of UK towns
Share of residents in each five-year age band, Census 2021.
Residents aged 65 and over: 23% here and 21% across Wales’s towns. Locally, 11% of residents are aged 15 to 24.
Median age of UK towns of 2,500+
■ Amlwch, 46.6. The typical town is 44.4.
Broad ages · share of residents
Women and men · all residents
50% women, 50% men
About an even split. Across Wales, 51% of residents are women.
A larger share of full-time students than 90% of UK towns: 6.8%
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, 29% of adults are in managerial and professional jobs and 27% in routine or semi-routine work; Amlwch has 22% and 31%. Here, nearly one in ten residents lived at another address a year earlier. For full-time students, the comparison across Wales’s towns is 8%.
The Census was taken on 21 March 2021, in term time, so students were counted at their term addresses.
Amlwch households average 2.2 people, smaller than in 85% of UK towns
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.
In Amlwch, 1.9% of households are unrelated adults sharing a home, beside 3.1% across Wales’s towns. Few places have so few households with dependent children: 26% here, fewer than in 64% of UK towns.
6.8% of households live in a flat or apartment, below 74% of UK towns
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
With households in terraced houses at 27%, Amlwch is ahead of 75% of UK towns on that count. As a reference point, 14% of households live in a flat or apartment across Wales’s towns. Census figures put households without a car or van at 22% in the town. 28% of households live in a detached house, fewer than in 52% of UK towns.
A smaller share of residents born outside the UK than 86% of UK towns: 3.4%
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
The figure for residents whose main language is English is 99% in Amlwch and 96% across Wales’s towns. The benchmark for residents born outside the UK across Wales’s towns: 7.4%. Among residents born abroad, the largest groups were born in EU countries (1.5%) and in the Middle East and Asia (0.9%).
Speaking Welsh: 59% in Amlwch
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
59% of residents aged 3 and over, 1,811 people, said in 2021 that they can speak Welsh, more than in 94% of Welsh towns (Welsh towns: 16%). In Gwynedd, Caernarfon has the highest share (82%).
Residents with no religion make up 44% in Amlwch, more than in 69% 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: 96% of Amlwch · Gwynedd’s towns 93% · Wales’s towns 90%.
Religion · all residents
Other than White British, most residents describe themselves as Other White (1.2%), Mixed or multiple (0.8%) and Arab (0.4%). The benchmark for residents with no religion across Wales’s towns: 47%. Residents who describe themselves as Christian are rarer here than in 63% of UK towns.
Above 76% of UK towns: 37% of adults have never married or formed a civil partnership
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
124 residents care, unpaid, for at least 50 hours a week. On unpaid carers, Amlwch sits higher than 67% of UK towns: 10%. Set beside that, 38% of adults have never married or formed a civil partnership across Wales’s towns.
The share of adults with a degree-level qualification: 26%
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
Amlwch’s adults: 26% with a degree-level qualification and 18% with none, against 31% and 20% across Wales’s towns. Students still working towards a degree help explain why A levels are the highest qualification of 18%.
Ranked by age, 245th youngest of 514 UK towns this size
Median age, Census 2021. Hover a dot for its students and residents born abroad; click for its page.
Keele is the youngest (20.6); West Chiltington the oldest (63.1). Nearest to Amlwch in age: Glemsford (46.6), Leonard Stanley and King's Stanley (46.6), Penmaenmawr (46.6) and Oughtibridge (46.7).
Of the 5 towns nearest Amlwch, 2 are older
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 |
|---|---|---|---|---|---|
| Amlwch | 3,148 | — | 46.6 | 23% | 26% |
| Cemaes | 1,023 | 4.5 mi | 57.2 | 37% | 18% |
| Llanerchymedd | 1,155 | 5.7 mi | 44.3 | 21% | 30% |
| Benllech | 2,072 | 7.8 mi | 62 | 45% | 13% |
| Bodedern | 1,193 | 10.4 mi | 41.2 | 20% | 29% |
| Llangefni | 5,264 | 10.7 mi | 39.5 | 20% | 31% |
Health, work and homes have their own pages
What this data can and can’t tell you
- The Census was taken in a lockdown, in term time. 21 March 2021 fell in term time, and students were asked to give their term-time address, so most were counted where they study. Some may have been living with family that day.
- “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 Amlwch’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 Amlwch’s residents
What is the population of Amlwch?
The 2021 Census counted 3,148 people in Amlwch’s built-up area.
What is the average age in Amlwch?
The median age was 46.6 at the 2021 Census, older than 66% of UK towns. 11% of residents were 15 to 24 and 23% were 65 or over.
How diverse is Amlwch?
96% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 93% across Gwynedd’s towns. 3.4% were born outside the UK.
What religion are people in Amlwch?
44% said they had no religion and 48% that they were Christian at the 2021 Census; 0.7% were Muslim and 7% didn’t answer.
Is Amlwch good for families?
26% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Amlwch’s schools page.
How many people speak Welsh in Amlwch?
1,811 residents aged 3 and over, 59%, 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.