| Postcode | CF31 3AX | 
|---|---|
| Post Town | Bridgend | 
| Nearest station | Bridgend (2 km) | 
| Bus stops | Police Headquarters (NW) | 
| Roads in this postcode | |
| Number of UPRNs | 5 View | 
| Known addresses | Hernstone Hall, Hernstone Heronston Barn Cottage, Hernstone Heronstone House, Hernstone | 
| Main property type | Detached | 
| Businesses | 
                        No businesses found
                     | 
| Latitude | 51.492566 | |
|---|---|---|
| Longitude | -3.569321 | |
| Easting | 291148 | |
| Northing | 178237 | |
| Grid reference | SS911782 | |
| UTM reference | 30U 460475 5704756 | |
| what3words | spicy.vision.ample | |
| FixPhrase | cringe lunchroom suitable unnoticed | |
| Plus code | 9C3RFCVJ+27 | |
| Altitude | 11 metres (36 feet) | |
| Sunrise (today) | 7:07 | |
| Sunset (today) | 16:51 | |
| Distance away | ||
| Distance to sea | 5.8 KMs (3.6 miles) | 
| Parish | Bridgend | W04000883 | 
|---|---|---|
| Ward | Oldcastle | W05001248 | 
| Unitary Authority | Bridgend | W06000013 | 
| County | Mid Glamorgan | W11000005 | 
| Constituency (2024) | Bridgend | W07000086 | 
| MP | Chris Elmore | Labour | 
| Police force | South Wales | |
| Water company | Dwr Cymru Welsh Water | |
| NUTS/ITL 3 | Central Valleys and Bridgend | |
| NUTS/ITL 2 | South East Wales | |
| NUTS/ITL 1 | Wales | |
| Country | Wales | W92000004 | 
| Date introduced | January 1980 | 
|---|---|
| Last updated | September 2025 | 
| User type | Small (addresses receive less than 25 items of mail per day) | 
| Quality | Within the building of the matched address closest to the postcode mean | 
| Population (2011) | 6 | |
|---|---|---|
| Households (2011) | 4 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Urban: Further from a major town or city | |
| Rural/urban (2011) | Urban city and town | |
| Census output area (2021) | W00005484 | |
| Census output area (2011) | 6A4 | |
| Lower layer super output area (2021) | Bridgend 013B | W01001037 | 
| Lower layer super output area (2011) | Bridgend 013B | W01001037 | 
| Middle layer super output area (2021) | Pen-y-fai, Laleston & Merthyr Mawr | W02000230 | 
| Middle layer super output area (2011) | Pen-y-fai, Laleston & Merthyr Mawr | W02000230 | 
| Travel to work area | Bridgend | W22000003 | 
| Average property price in Cardiff | £221,509 | 
|---|---|
| Annual change | 2.2% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Heronston Barn Cottage, Hernstone | Other (freehold) | Sep 2022 | £368,950 | 
| Hernstone Hall, Hernstone | Detached (freehold) | Nov 2021 | £840,000 | 
| Heronstone House, Hernstone | Detached (freehold) | Aug 2011 | £520,000 |