Photo: Shaun Butler · CC BY-SA 2.0Older than 97% of UK towns: half of Hill Mountain is over 55.2
With households with dependent children at 20%, Hill Mountain is behind 94% of UK towns on that count. The census found that 14% of residents give unpaid care locally. On households in flats, Hill Mountain sits lower than 99% of UK towns: 0.9%. At the 2021 Census, 260 people lived locally, in 113 households.
Residents aged 65 and over: 30%, a higher share than 92% of UK towns
Share of residents in each five-year age band, Census 2021.
More residents are 60–64 than any other five-year age: just over one in ten residents, 1.7 times the share across Wales’s towns. Measured more widely, 21% of residents are 65 or over across Wales’s towns. The census found that 8.9% of residents are aged 15 to 24 in Hill Mountain.
Broad ages · share of residents
Women and men · all residents
49% women, 51% men
About 105 men for every 100 women. Across Wales, 51% of residents are women.
Below 99% of UK towns: 2.2% of adults are full-time students
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%.
Here 8.1% of residents lived at another address a year earlier, where the figure across Wales’s towns is 9.1%. For comparison, 8% of adults are full-time students across Wales’s towns.
Above 97% of UK towns: 5.3% of households are unrelated adults sharing a home
Household make-up at the 2021 Census. Each square is 1% of households.
Against Dyfed’s towns and Wales’s towns
People per household
Wales’s towns.
26% of households are one person living alone, against 32% across Wales’s towns. The wider picture: 3.1% of households are unrelated adults sharing a home across Wales’s towns.
85% of households live in a detached house, a share 99% 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
1.8% of households live in a terraced house, against 29% across Wales’s towns. In Hill Mountain, 5.3% of households have no car or van. As a yardstick, nearly a quarter of households live in a detached house across Wales’s towns.
A smaller share of residents born outside the UK than 99% of UK towns: 1.2%
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
96% of residents have English as their main language across Wales’s towns, against 100% in Hill Mountain. Across Wales’s towns, the share of residents born outside the UK is 7.4%. The two biggest birthplaces abroad are in the Americas, Oceania and elsewhere (0.8%) and in EU countries (0.4%).
Hill Mountain: 9.3% of residents speak Welsh
Welsh language skills, residents aged 3 and over, Census 2021.
Welsh language skills · residents aged 3 and over
9.3% of residents aged 3 and over, 24 people, said in 2021 that they can speak Welsh, fewer than in 74% of Welsh towns (Welsh towns: 16%). In Dyfed, Tumble has the highest share (62%).
A higher share of residents who describe themselves as White British than 99% of UK towns, at 98%
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: 98% of Hill Mountain · Dyfed’s towns 93% · Wales’s towns 90%.
Religion · all residents
The figure for residents with no religion is 29% in Hill Mountain and 47% across Wales’s towns. On residents who describe themselves as Christian, Hill Mountain sits higher than 96% of UK towns: 62%. For residents who describe themselves as White British, the comparison across Wales’s towns is 90%.
Hill Mountain: 63% of adults are married or in a civil partnership, above 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
Adults who have never married make up 24%, against 38% across Wales’s towns. Against that, 43% of adults are married or in a civil partnership across Wales’s towns.
Degree-level qualifications: held by 47% of adults
Highest qualification, residents 16 and over, Census 2021.
Highest qualification · residents 16 and over
Hill Mountain’s adults: 47% with a degree-level qualification and 12% with none, against 31% and 20% across Wales’s towns.
Hill Mountain is older than every town around it
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 |
|---|---|---|---|---|---|
| Hill Mountain | 260 | — | 55.2 | 30% | 20% |
| Neyland | 3,250 | 2.1 mi | 46.7 | 24% | 24% |
| Johnston | 1,766 | 3.1 mi | 43.3 | 24% | 28% |
| Pembroke Dock | 9,659 | 3.3 mi | 41.7 | 21% | 27% |
| Merlin's Bridge | 2,220 | 3.9 mi | 41.9 | 21% | 29% |
| Pembroke | 7,963 | 4.3 mi | 46.4 | 26% | 25% |
| Milford Haven | 14,251 | 4.8 mi | 42.2 | 22% | 27% |
| Haverfordwest | 12,088 | 4.9 mi | 40.4 | 20% | 28% |
Health, work and homes have their own pages
What this data can and can’t tell you
- “Dyfed’s towns” and “Wales’s towns” mean their built-up areas. Census comparisons pool every built-up area in Dyfed (or Wales), summed the same way as Hill Mountain’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 Hill Mountain’s residents
What is the population of Hill Mountain?
The 2021 Census counted 260 people in Hill Mountain’s built-up area.
What is the average age in Hill Mountain?
The median age was 55.2 at the 2021 Census. 8.9% of residents were 15 to 24 and 30% were 65 or over.
How diverse is Hill Mountain?
98% of residents described themselves as White British in 2021, against 90% across Wales’s towns and 93% across Dyfed’s towns. 1.2% were born outside the UK.
What religion are people in Hill Mountain?
29% said they had no religion and 62% that they were Christian at the 2021 Census; 0% were Muslim and 6.5% didn’t answer.
Is Hill Mountain good for families?
20% of households had dependent children in 2021, against 27% across Wales’s towns. Schools are on Hill Mountain’s schools page.
How many people speak Welsh in Hill Mountain?
24 residents aged 3 and over, 9.3%, 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.