| Postcode | CF23 9AX | 
|---|---|
| Post Town | Cardiff | 
| Nearest station | Cathays (2 km) | 
| Bus stops | Earl`s Court Road (SE) Colchester Avenue (NW) Melrose Avenue (NW) Colchester Avenue (SE) Waterloo Road (NW) Blenhiem Road (N) | 
| Roads in this postcode | |
| Number of UPRNs | 17 View | 
| Known addresses | 43 Colchester Avenue, Penylan 47 Colchester Avenue, Penylan 49 Colchester Avenue, Penylan 55 Colchester Avenue, Penylan 61 Colchester Avenue, Penylan 63 Colchester Avenue, Penylan | 
| Main property type | Semi-detached | 
| Businesses | 
| Latitude | 51.498608 | |
|---|---|---|
| Longitude | -3.156267 | |
| Easting | 319833 | |
| Northing | 178375 | |
| Grid reference | ST198783 | |
| UTM reference | 30U 489152 5705285 | |
| what3words | them.tender.pull | |
| FixPhrase | cringe lure swan unrelated | |
| Plus code | 9C3RFRXV+CF | |
| Altitude | 25 metres (83 feet) | |
| Sunrise (today) | 7:05 | |
| Sunset (today) | 16:49 | |
| Distance away | ||
| Distance to sea | 2.7 KMs (1.7 miles) | 
| Parish | Penylan | W04000860 | 
|---|---|---|
| Ward | Penylan | W05001288 | 
| Unitary Authority | Cardiff | W06000015 | 
| County | South Glamorgan | W11000007 | 
| Constituency (2024) | Cardiff East | W07000089 | 
| MP | Jo Stevens | Labour | 
| Police force | South Wales | |
| Water company | Dwr Cymru Welsh Water | |
| NUTS/ITL 3 | Cardiff and Vale of Glamorgan | |
| NUTS/ITL 2 | South East Wales | |
| NUTS/ITL 1 | Wales | |
| Country | Wales | W92000004 | 
| Date introduced | June 1999 | 
|---|---|
| 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) | 35 | |
|---|---|---|
| Households (2011) | 15 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Urban: Nearer to a major town or city | |
| Rural/urban (2011) | Urban city and town | |
| Built up area (2024) | Cardiff | W45001208 | 
| Census output area (2021) | W00009394 | |
| Census output area (2011) | 5A2 | |
| Lower layer super output area (2021) | Cardiff 029A | W01001822 | 
| Lower layer super output area (2011) | Cardiff 029A | W01001822 | 
| Middle layer super output area (2021) | Pen-y-lan South | W02000395 | 
| Middle layer super output area (2011) | Pen-y-lan South | W02000395 | 
| Travel to work area | Cardiff | W22000024 | 
| Average property price in Cardiff | £221,509 | 
|---|---|
| Annual change | 2.2% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 43 Colchester Avenue, Penylan | Semi-detached (freehold) | Jul 2022 | £635,000 | 
| Semi-detached (freehold) | Dec 1998 | £120,000 | |
| 49 Colchester Avenue, Penylan | Semi-detached (freehold) | Dec 2021 | £530,000 | 
| Semi-detached (freehold) | Feb 1999 | £135,000 | |
| 63 Colchester Avenue, Penylan | Terraced (freehold) | Apr 2017 | £330,000 | 
| Semi-detached (freehold) | Oct 2003 | £250,000 | |
| 61 Colchester Avenue, Penylan | Terraced (freehold) | May 2007 | £307,500 | 
| Terraced (freehold) | Apr 1999 | £108,950 | |
| 47 Colchester Avenue, Penylan | Semi-detached (freehold) | Oct 2004 | £270,000 | 
| Semi-detached (freehold) | Jan 1997 | £112,000 | |
| 55 Colchester Avenue, Penylan | Detached (freehold) | Jul 2000 | £199,950 |