CF23 postcode district
CF23 holds 908 live postcodes around Cardiff, in Cardiff.
No listed town or village has its centre in CF23; the nearest are on the neighbouring districts below.
Wards
| Name | Share of postcodes |
|---|---|
| Penylan | 30% |
| Cyncoed | 26% |
| Pentwyn | 22% |
| Pontprennau and Old St Mellons | 15% |
| Trowbridge | 4% |
| Plasnewydd | 2% |
| Heath | 0% |
| Lisvane and Thornhill | 0% |
Westminster constituencies
| Name | Share of postcodes |
|---|---|
| Cardiff East | 84% |
| Cardiff North | 16% |
Deprivation
The middle postcode here sits in decile 9 of the Welsh Index of Multiple Deprivation, Wales's own separate index, where decile 1 is the most deprived tenth of neighbourhoods and 10 the least. 16% of this district's postcodes sit in the most deprived three deciles, 65% in the least deprived three.
Deprivation deciles describe the LSOA neighbourhood each postcode sits in, weighted by postcodes rather than by people, because the postcode file carries no population. A district where the deprived neighbourhoods are densely populated will read better here than it would per resident.
Neighbouring districts in the CF area
CF3 · CF5 · CF10 · CF11 · CF14 · CF15 · CF24 · CF30 · CF31 · CF32 · CF33 · CF34 · CF35 · CF36 · CF37 · CF38 · CF39 · CF40 · CF41 · CF42 · CF43 · CF44 · CF45 · CF46 · CF47 · CF48 · CF61 · CF62 · CF63 · CF64 · CF71 · CF72 · CF81 · CF82 · CF83 · CF91 · CF95 · CF99
Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v3.0. Postcode data is the ONS Postcode Directory, August 2026 edition; counts are live postcodes with a usable location. Northern Ireland postcodes carry a separate licence and are not included; Scotland joins when the site's Scottish coverage does.