Photo: Its snowing in East Asia at en.wikipedia · CC BY 3.0Above 99% of UK towns: 43% of households are one person living alone
A household here has 2.1 people on average; across Wales’s towns, 2.3. Few places have as many households in terraced houses: 44% here, more than in 96% of UK towns. Census day 2021: 570 residents and 273 households in Caersws. The census found that 14% of households live in a detached house in the village.
A median age of 48.2: Caersws is older than 75% of UK towns
Share of residents in each five-year age band, Census 2021.
Residents aged 15 to 24: 9.7% here and 12% across Wales’s towns. The census found that a quarter of residents are 65 or over in Caersws.
Broad ages · share of residents
Women and men · all residents
51% women, 49% men
About 95 men for every 100 women. Across Wales, 51% of residents are women.
Below 89% of UK towns: 6.7% of residents lived at another address a year earlier
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%.
5.9% of adults are full-time students, against 8% across Wales’s towns. Typically, 9.1% of residents lived at another address a year earlier across Wales’s towns.
The Census was taken on 21 March 2021, in term time, so students were counted at their term addresses.
Caersws sits below 88% of UK towns for households with dependent children (22%)
Household make-up at the 2021 Census. Each square is 1% of households.
Against Powys’ towns and Wales’s towns
People per household
Wales’s towns.
Against a figure of 3.1% across Wales’s towns, the share of shared households of unrelated adults in Caersws comes in at 1.5%. For households with dependent children, the comparison across Wales’s towns is 27%.
17% of households have no car or van, a share 58% of UK towns don’t reach
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
Here, 10% of households live in a flat or apartment. For households without a car or van, the comparison across Wales’s towns is 21%.
A smaller share of residents born outside the UK than 98% of UK towns: 2.3%
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
By its share of residents whose main language is English (99%), Caersws is above 90% of UK towns. Elsewhere, 7.4% of residents were born outside the UK across Wales’s towns. The largest groups were born in EU countries (1.6%) and in the Middle East and Asia (0.5%).
Welsh speakers: 16% of Caersws’s residents
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
Asked in 2021, 90 residents aged 3 and over, 16%, said they can speak Welsh; across Welsh towns, 16%: more than in 69% of Welsh towns. No town in Powys beats Ystradgynlais (32%).
In Caersws, 97% of residents describe themselves as White British, more than in 97% 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 Caersws · Powys’ towns 94% · Wales’s towns 90%.
Religion · all residents
The figure for residents who describe themselves as Christian is 45% in Caersws and 43% across Wales’s towns. 46% of residents said they have no religion, a higher share than in 79% of UK towns. Residents who describe themselves as White British: 90% across Wales’s towns, for comparison.
12% of residents give unpaid care, a share 98% of UK towns don’t reach
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
For 21 residents, unpaid care runs to 50 hours or more a week. Across the comparison, one in ten residents give unpaid care across Wales’s towns. At 41%, the share of married adults and civil partners is lower than in 89% of UK towns. By contrast, in Caersws, 36% of adults have never married or formed a civil partnership, beside 38% across Wales’s towns.
19% of adults have a degree-level qualification
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
Across Wales’s towns, 20% of adults have no qualification; in Caersws, 23%, while 19% hold one at degree level (31%).
Around Caersws, 1 of 2 towns have a higher median age
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 |
|---|---|---|---|---|---|
| Caersws | 570 | — | 48.2 | 25% | 22% |
| Newtown | 10,882 | 4.4 mi | 41.4 | 21% | 26% |
| Llanidloes | 2,197 | 6.9 mi | 50.7 | 29% | 19% |
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.
- “Powys’ towns” and “Wales’s towns” mean their built-up areas. Census comparisons pool every built-up area in Powys (or Wales), summed the same way as Caersws’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 Caersws’s residents
What is the population of Caersws?
The 2021 Census counted 570 people in Caersws’s built-up area.
What is the average age in Caersws?
The median age was 48.2 at the 2021 Census. 9.7% of residents were 15 to 24 and 25% were 65 or over.
How diverse is Caersws?
97% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 94% across Powys’ towns. 2.3% were born outside the UK.
What religion are people in Caersws?
46% said they had no religion and 45% that they were Christian at the 2021 Census; 0% were Muslim and 8.4% didn’t answer.
Is Caersws good for families?
22% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Caersws’s schools page.
How many people speak Welsh in Caersws?
90 residents aged 3 and over, 16%, 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.