Carmarthenshire — Housing Profile (Census 2021)
ONS Census 2021 · 81,762 households · ONS code W06000010 · Census day 21 March 2021
What is the housing profile of Carmarthenshire?
Carmarthenshire has a Gera Housing Stock Profile (GHSP) of 77/100 from ONS Census 2021 (+3 points above the national average of 74/100). 73.8% of its 81,762 households occupy detached or semi-detached houses, 54.3% use mains gas heating, and 1.7% are overcrowded by bedroom standard. Source: ONS Census 2021 Tables TS044–TS052 (OGL v3.0), census day 21 March 2021.
Census day . Published . Fetched . Updated when ONS releases revised census outputs.
Census 2021 housing data — Carmarthenshire
| Metric | Carmarthenshire | National | Source |
|---|---|---|---|
| Total households | 81,762 | 24,783,191 | TS044 |
| Detached dwellings | 40.3% | — | TS044 |
| Semi-detached dwellings | 33.5% | — | TS044 |
| Terraced dwellings | 18.8% | — | TS044 |
| Purpose-built flats | 4.7% | — | TS044 |
| Mains gas heating only | 54.3% | 73.8% | TS046 |
| Electric-only heating | 4% | — | TS046 |
| Oil-only heating | 23.7% | — | TS046 |
| No central heating | 1.1% | — | TS046 |
| Under-occupied (spare bedrooms) | 80.7% | — | TS052 |
| Overcrowded (−1 or fewer) | 1.7% | 4.3% | TS052 |
| No car or van | 15.4% | 23.3% | TS045 |
| 1 car or van | 41.3% | — | TS045 |
| 2 cars or vans | 30.2% | — | TS045 |
| 3+ cars or vans | 13.1% | — | TS045 |
| GHSP score | 77/100 | 74/100 | Gera composite |
All figures from ONS Census 2021 (OGL v3.0), census day 21 March 2021. Licence: Open Government Licence v3.0.
Local authorities with a similar GHSP score
Frequently asked questions
What is the housing profile of Carmarthenshire according to Census 2021?
Carmarthenshire has a Gera Housing Stock Profile (GHSP) of 77/100 from ONS Census 2021 (+3 points above the national average of 74/100). 73.8% of its 81,762 households occupy detached or semi-detached houses, 54.3% use mains gas heating, and 1.7% are overcrowded by bedroom standard. Source: ONS Census 2021 Tables TS044–TS052 (OGL v3.0), census day 21 March 2021.
What percentage of homes in Carmarthenshire are detached or semi-detached?
According to ONS Census 2021 (Table TS044), 73.8% of the 81,762 households in Carmarthenshire occupy detached (40.3%) or semi-detached (33.5%) properties. Terraced houses account for 18.8% and purpose-built flats for 4.7%. Source: ONS Census 2021, OGL v3.0.
What type of central heating do homes in Carmarthenshire use?
Per ONS Census 2021 (Table TS046), 54.3% of households in Carmarthenshire use mains gas as their sole central heating source. Electric-only heating accounts for 4%, oil-only for 23.7%, and 1.1% of households have no central heating. Source: ONS Census 2021, OGL v3.0.
Is there overcrowding in Carmarthenshire?
The ONS bedroom standard defines overcrowding as a household having one or fewer bedrooms than required. In Carmarthenshire, 1.7% of households were overcrowded at Census Day 21 March 2021. By contrast, 80.7% were under-occupied (one or more spare bedrooms). Source: ONS Census 2021, Table TS052, OGL v3.0.
How many households in Carmarthenshire have no car?
According to ONS Census 2021 (Table TS045), 15.4% of households in Carmarthenshire have no car or van. 41.3% have one car, 30.2% have two cars, and 13.1% have three or more. Source: ONS Census 2021, OGL v3.0.
What is the Gera Housing Stock Profile (GHSP)?
The Gera Housing Stock Profile (GHSP) is a 0–100 index computed from four ONS Census 2021 Topic Summary tables (TS044 accommodation type, TS045 car availability, TS046 central heating, TS052 bedroom occupancy rating). Formula: GHSP = 0.30 × (detached+semi)% + 0.25 × (100 − overcrowded%) + 0.25 × mains-gas% + 0.20 × (100 − no-car%). A higher score indicates a local authority with more spacious housing, lower overcrowding, stronger mains-gas connection, and higher car availability. National England & Wales baseline: 74/100. Source: ONS Census 2021 (OGL v3.0), census day 21 March 2021. All data is published by ONS.
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Contains public sector information licensed under the Open Government Licence v3.0. Source: Office for National Statistics (ONS), Census 2021, Tables TS044, TS045, TS046, TS052. ONS geography code: W06000010. Reference date: 21 March 2021. Published: January 2023. Fetched: 2026-06-20. Full methodology.