Photo: Jaggery · CC BY-SA 2.0Abertridwr and Senghenydd is younger than 90% of UK towns: a median age of 37.6
29% of households live in a terraced house across Wales’s towns, against 56% in Abertridwr and Senghenydd. At the 2021 Census, 5,639 people lived in the town, in 2,418 households. Here, 96% of residents describe themselves as White British. Few places have as many households without a car or van: 25% here, more than in 87% of UK towns.
What the Census says about Abertridwr and Senghenydd’s people
More with no religion than most
64% of residents answered “no religion” in 2021 and 30% Christian, against 47% and 43% across Wales’s towns. Ethnicity & religion ↓
Younger than most towns
Half of Abertridwr and Senghenydd’s residents are under 37.6 and half over, against 44.4 in the typical UK town. 11% are 15 to 24 and 16% are 65 or over. Ages ↓
Written from the data on this page: ONS Census 2021 (output areas summed to the 2022 built-up area).
Abertridwr and Senghenydd sits below 88% of UK towns for residents aged 65 and over (16%)
Share of residents in each five-year age band, Census 2021.
No age band is larger than 30–34: 7.6% of residents. Just over one in ten residents are aged 15 to 24, more than in 90% of UK towns. Typically, 21% of residents are 65 or over across Wales’s towns. In Abergavenny, the oldest of Gwent’s towns by this measure, it is 27%.
Median age of UK towns of 2,500+
■ Abertridwr and Senghenydd, 37.6. The typical town is 44.4.
Broad ages · share of residents
Women and men · all residents
51% women, 49% men
About an even split. Across Wales, 51% of residents are women.
A smaller share of residents who moved in within the year than 95% of UK towns: 6.2%
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%.
Managerial and professional jobs account for 18% of Abertridwr and Senghenydd’s adults, routine and semi-routine work for 37%, against 29% and 27% across Wales’s towns. Residents who moved in within the year make up 9.1% across Wales’s towns. In Abertridwr and Senghenydd, 5.9% of adults are full-time students.
The Census was taken on 21 March 2021, in term time, so students were counted at their term addresses.
Abertridwr and Senghenydd: 31% of households have dependent children, above 80% of UK towns
Household make-up at the 2021 Census. Each square is 1% of households.
Against Gwent’s towns and Wales’s towns
People per household
Wales’s towns.
Households in Abertridwr and Senghenydd hold 2.3 people on average (Wales’s towns: 2.3). On shared households of unrelated adults, Abertridwr and Senghenydd sits lower than 86% of UK towns: 1.7%. Across Wales’s towns, the share of households with dependent children is 27%. In Abertridwr and Senghenydd, 32% of households are one person living alone.
Only 7% of households live in a detached house in Abertridwr and Senghenydd
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
In Abertridwr and Senghenydd, 13% of households live in a flat or apartment, beside 14% across Wales’s towns. The comparison figure for households in detached houses is 24% across Wales’s towns.
Only 2.9% of residents were born outside the UK in Abertridwr and Senghenydd
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%
When those born abroad arrived
Main language · residents aged 3 and over
In Abertridwr and Senghenydd, 99% of residents have English as their main language, beside 96% across Wales’s towns. On average, 7.4% of residents were born outside the UK across Wales’s towns. Among residents born abroad, the largest groups were born in EU countries (1.3%) and in the Middle East and Asia (0.7%).
Can speak Welsh: 14% of Abertridwr and Senghenydd’s residents
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
Asked in 2021, 788 residents aged 3 and over, 14%, said they can speak Welsh; across Welsh towns, 16%: more than in 64% of Welsh towns. It is the highest share of Gwent’s 38 towns of 2,500+.
Residents with no religion make up 64% in Abertridwr and Senghenydd, more than in 99% 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 Abertridwr and Senghenydd · Gwent’s towns 91% · Wales’s towns 90%.
Religion · all residents
Behind White British, the largest groups are Other White (1.4%), Mixed or multiple (1%) and Chinese (0.3%). 30% of residents describe themselves as Christian, a lower share than in 99% of UK towns. As a reference point, 47% of residents said they have no religion across Wales’s towns.
Abertridwr and Senghenydd ranks above 95% of UK towns on adults who have never married: 43%
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
One in ten residents give unpaid care across Wales’s towns, against 11% in Abertridwr and Senghenydd. By contrast, at 38%, the share of married adults and civil partners is lower than in 95% of UK towns. Students and young renters account for much of that.
20% of adults hold a degree-level qualification
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
Against 31% across Wales’s towns, 20% of adults here have a degree-level qualification, while 28% hold no qualification (20%).
624 UK towns of 4,000 to 8,000 people: this is the 54th youngest
Median age, Census 2021. Hover a dot for its students and residents born abroad; click for its page.
Bailrigg is the youngest (18.9); Barton on Sea the oldest (65.3). Nearest to Abertridwr and Senghenydd in age: City of London (37.3), Wool (37.6), Aberbargoed (37.8) and Church (37.9).
Abertridwr and Senghenydd and its 7 nearest towns: 6 of them 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 |
|---|---|---|---|---|---|
| Abertridwr and Senghenydd | 5,639 | — | 37.6 | 16% | 31% |
| Llanbradach | 3,766 | 1.9 mi | 44.1 | 22% | 25% |
| Caerphilly | 33,104 | 2.4 mi | 42.1 | 20% | 29% |
| Pontypridd | 31,895 | 2.6 mi | 37.3 | 17% | 26% |
| Bedwas | 6,463 | 3.2 mi | 44.4 | 22% | 28% |
| Church Village | 14,162 | 3.4 mi | 42.5 | 21% | 32% |
| Maesycwmmer | 2,095 | 3.5 mi | 46.1 | 24% | 25% |
| Nelson | 4,235 | 3.5 mi | 48.6 | 26% | 25% |
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.
- “Gwent’s towns” and “Wales’s towns” mean their built-up areas. Census comparisons pool every built-up area in Gwent (or Wales), summed the same way as Abertridwr and Senghenydd’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 Abertridwr and Senghenydd’s residents
What is the population of Abertridwr and Senghenydd?
The 2021 Census counted 5,639 people in Abertridwr and Senghenydd’s built-up area.
What is the average age in Abertridwr and Senghenydd?
The median age was 37.6 at the 2021 Census, younger than 90% of UK towns. 11% of residents were 15 to 24 and 16% were 65 or over.
How diverse is Abertridwr and Senghenydd?
96% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 91% across Gwent’s towns. 2.9% were born outside the UK.
What religion are people in Abertridwr and Senghenydd?
64% said they had no religion and 30% that they were Christian at the 2021 Census; 0.3% were Muslim and 5.6% didn’t answer.
Is Abertridwr and Senghenydd good for families?
31% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Abertridwr and Senghenydd’s schools page.
How many people speak Welsh in Abertridwr and Senghenydd?
788 residents aged 3 and over, 14%, 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.