Each edition grades its towns against each other only.
Some 11,856 people live in this town, in Gwent, Wales. A Band D home pays £2,083 in council tax.
Several subjects drag its grade down. At C− overall, Ystrad Mynach is better than 16% of UK towns and ranks #16 of 38 in Gwent. Residents’ health trails most towns (D): 7.9% in bad or very bad health, 21.5% disabled. Police record more crime here than in most towns: police record 44.1 violent and sexual offences per 1,000 residents a year, and 18.1 home and vehicle crimes. Among UK towns of 10,000 to 50,000 people, it has less crime per resident than 20%. Prices are modest for what you get (A−): a typical home costs £185,000 and rent runs £747 a month.
Figures: prices, HM Land Registry, the last three years · health, Census 2021 (the grade adjusts for age) · crime, police.uk, averaged Sep 2023 to Aug 2026.
This town's Health Grade uses ONS's small-area life expectancy and healthy life expectancy for 2019 to 2023, and two Census 2021 measures, bad health and disability, adjusted for age. English towns' grades also use OHID's small-area early deaths, hospital admissions and child obesity, which OHID publishes for England only.
The 3 things Ystrad Mynach does most differently from other towns.
Each subject compared with the 2,160 UK towns with an overall grade (schools within Wales), ordered by how far Ystrad Mynach is from typical. American towns are graded separately.
How TownRatings grades towns →
Cadw lists 15 buildings inside Ystrad Mynach’s built-up area, 3 of them Grade II*.
29% of its homes were built before 1919, against 15% in the typical UK town.
Explore the history →Data highlights are ordered by what stands out in Ystrad Mynach.
The nearest A&E to Ystrad Mynach is The Royal Glamorgan Hospital, 9.8 miles away. 2 GP practices serve the town. At the census, 21% of people here had a disability, close to both Gwent’s towns (22%) and Wales’s towns (22%).
| Census 2021 | Ystrad Mynach | Gwent | Wales |
|---|---|---|---|
| Good or very good health | 78% | 77% | 78% |
| Bad or very bad health | 7.9% | 7.7% | 7.1% |
| Disabled (Equality Act) | 21% | 22% | 22% |
ONS Census 2021, general health and disability · ONS, life expectancy 2019–23 · OGL · These shares come straight from the census, without allowing for age, and young towns benefit; the Health Grade instead weighs age-adjusted measures, including life expectancy.
Two of them are shown below, each with the reason. Between them, five primaries teach 1,318 pupils in Ystrad Mynach.
| School | Level | Pupils | Letter |
|---|---|---|---|
| Ystrad Mynach PrimaryLargest primary schoolPrimary | Primary | 447 | – |
| Ysgol Gymraeg Bro AlltaLargest Welsh-medium schoolPrimary | Primary | 282 | – |
Violence and sexual offences made up 48% of the total. Police figures for Ystrad Mynach’s built-up area: 1,085 crimes and 231 anti-social behaviour reports in the 12 months to August 2026. For its size, Ystrad Mynach records more crime per resident than four fifths of the 645 UK towns of 10,000 to 50,000 people. Anti-social behaviour, shown but not graded, came to 17 reports per 1,000, higher than both Gwent’s towns (15) and Wales’s towns (10.4).
Not gradedAnti-social behaviour, shoplifting and other theft are shown but left out of the Safety Grade, which counts violence and crimes against homes and vehicles per resident.
data.police.uk street-level crime · points inside the ONS built-up-area boundary · OGL · The police category of violence and sexual offences includes harassment and stalking.
15% live in social housing, below both Gwent’s towns (20%) and Wales’s towns (18%). Behind the median of £185,000: 429 standard sales inside Ystrad Mynach’s built-up area, September 2023 to August 2026. Private tenants account for 14% of households.
| By type | Median | Sales |
|---|---|---|
| Detached | £315,000 | 95 |
| Semi-detached | £190,000 | 180 |
| Terraced | £165,000 | 122 |
| Flat or maisonette | £112,250 | 32 |
HM Land Registry Price Paid · ONS private rents · MHCLG / Welsh Government council tax · ONS Census 2021 tenure · OGL
The Census was taken on 21 March 2021, in lockdown, so 25% of workers were mainly at home; shares here are of those who travelled.
85% of commuters drove, about level with Gwent’s towns (84%) and above Wales’s towns (81%). There are 1.7 jobs in Ystrad Mynach for each resident in work. Unemployment benefit claims reached 2.9% of 16 to 64s in 2026.
ONS Census 2021, method of travel and distance to work · ONS small-area income · DWP claimant count · OGL
The heritage lists give each building’s grade but not its age, so we don’t say which is oldest.
Grade II* covers 3 of them. Of Ystrad Mynach’s land, 2% lies in conservation areas, above Gwent’s towns (0%) and Wales’s towns (0%) alike. Homes built before 1919 account for 29% of the housing.
Cadw list, October 2026 · Valuation Office Agency, homes by build period · OGL
Typical age in Ystrad Mynach: 39.5, the median. People 65 and over make up 16% of the town, below both Gwent’s towns (20%) and Wales’s towns (21%). 11% of residents are aged 15 to 24.
51% women, 49% men
About an even split. Across Wales, 51% of residents are women.
| Ystrad Mynach | Gwent | Wales | |
|---|---|---|---|
| Under 15 | 19% | 18% | 17% |
| 15–24 | 11% | 11% | 12% |
| 25–44 | 28% | 26% | 25% |
| 45–64 | 26% | 27% | 26% |
| 65+ | 16% | 20% | 21% |
| No qualifications | 21% | 23% | 20% |
| Apprenticeship | 4.7% | 5.4% | 5.6% |
| A levels or similar | 18% | 16% | 17% |
| Degree level | 30% | 28% | 31% |
ONS Census 2021 · Gwent and Wales: all residents of their built-up areas · OGL
15 listed buildings in Ystrad Mynach.
Old Fire Station: Photo: Jaggery · CC BY-SA 2.0 · Capel Hengoed (also known as Hengoed Baptist Chapel): Photo: John Lord · CC BY-SA 2.0 · Ystrad Mynach South Signal Box: Photo: kitmasterbloke · CC BY 2.0 · Church of Holy Trinity: Photo: Jaggery · CC BY-SA 2.0
7 notable people were born in Ystrad Mynach.
Richard Brake: Miguel Discart from Bruxelles, Belgique, CC BY-SA 2.0 · Daniel Parslow: Mark Lee, CC BY 2.0 · Steffan Lewis: National Assembly for Wales from Wales, CC BY 2.0
The nearest built-up areas, from ONS’s 2022 boundaries. See them on the map →
| Town | People | Miles | Overall | Cost | Safety | Health |
|---|---|---|---|---|---|---|
| Ystrad Mynach | 11,856 | — | C− | A− | D | D |
| Maesycwmmer | 2,095 | 0.6 | — | A− | C | D |
| Fleur-de-lis and Pengam | 3,102 | 1.2 | C− | A− | C | D |
| Tir-y-berth and Glan-y-nant | 1,411 | 1.2 | — | A− | C− | D |
| Pen-pedair-heol | 3,787 | 1.3 | C+ | B+ | B+ | D |
| Gelligaer | 1,436 | 1.4 | — | A | D− | D− |
| Blackwood | 12,621 | 1.8 | D | B+ | D− | D |
| Pontllanfraith | 9,363 | 1.8 | C− | B+ | C | D |
Maesycwmmer, Tir-y-berth and Glan-y-nant and Gelligaer have fewer than 2,500 residents, so they get subject grades but no overall grade. People: Census 2021. Miles: centre to centre.
15 on Cadw’s list, 3 of them Grade II*.
Surface water isn’t included. Check a specific address on Natural Resources Wales’s flood risk service.
Homes cost less than in most UK towns: the median sale over three years was £185,000, against £277,000 in the typical UK town. By type: flats £112,250, terraced houses £165,000, semi-detached houses £190,000 and detached houses £315,000.
Town in Gwent, Wales
Ystrad Mynach is a built-up area of 11,856 people, in the Caerphilly council area. TownRatings uses ONS’s 2022 built-up areas as towns: the physical town, as people mean the word, rather than a council district, so its figures cover the town itself.
Built from ONS geography and Census 2021
Sources: ONS Census 2021, output areas summed to the ONS 2022 built-up area · HM Land Registry Price Paid (standard sales, September 2023 to August 2026) · ONS Price Index of Private Rents (August 2026, by council) · MHCLG and Welsh Government council tax, Band D 2026–27 (with parish precepts in England) · data.police.uk street-level crime, 36 months to August 2026, points inside the built-up-area boundary · ONS small-area life expectancy and healthy life expectancy, 2019 to 2023 (England and Wales), OHID Fingertips small-area indicators (England) and Census 2021 health, adjusted for age · ONS small-area income estimates (financial year ending 2023) · DWP claimant count via Nomis (January to August 2026) · Cadw listed buildings, scheduled monuments and registered historic parks and gardens via DataMapWales, October 2026, inside the ONS 2022 built-up-area boundary · Valuation Office Agency, Council Tax: stock of properties by build period (31 March 2025) · TownRatings grades: our own summary of the data, ranked against UK towns only. 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.