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CF23 8BY

Pontprennau and Old St Mellons · Cardiff · Wales

Updated September 2026

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Location overview

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Post town
Cardiff
Ward
Pontprennau and Old St Mellons
Local authority
Cardiff
Constituency
Cardiff North
Postcode district
CF23
Postcode sector
CF23 8

Nearby postcodes

Nearby postcode distances
Postcode Distance
CF23 8BX 65 m
CF23 8BZ 67 m
CF23 8AW 80 m
CF23 8AT 102 m
CF23 8AZ 103 m
Complete postcode fields and official codes
Postcode
CF23 8BY
Status
Current
Introduced
1 June 1999
Terminated
Not published
Postcode area
CF
Postcode district
CF23
Postcode sector
CF23 8
Latitude
51.532070
Longitude
-3.145813
British National Grid easting
320,618
British National Grid northing
182,085

Statistical and administrative geographies

Country
Wales · W92000004
Region
W99999999
Local authority district
Cardiff · W06000015
Electoral ward
Pontprennau and Old St Mellons · W05001290
Parish or community
W04000868
Westminster constituency
Cardiff North · W07000090
Output area
W00009497
Lower layer super output area
Cardiff 003D · W01001844
Middle layer super output area
Cardiff 003 · W02000369

Postcode source versions

Explore CF23

Use the wider postcode district to compare the same evidence across more locations.

Property

At this postcode

View all property records
33 recorded sales at this postcode
Address Date Price
15, Amblecote Close, Pontprennau, Cardiff, CF23 8BY 18 December 2025 £347,000
8, Amblecote Close, Pontprennau, Cardiff, CF23 8BY 27 October 2023 £294,500
7, Amblecote Close, Pontprennau, Cardiff, CF23 8BY 4 April 2023 £275,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
52
Primary
0
Secondary
0

  1. Pontprennau Primary School

    Welsh establishment

    605 m

  2. St Bernadette's R.C. Primary School

    Welsh establishment

    664 m

  3. The Hollies Special School

    Welsh establishment

    707 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
1,320
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 522
  • Public order 162
  • Shoplifting 144
  • Criminal damage and arson 121
  • Anti social behaviour 108

Census 2021

Population and age profile

Postcode residents
51

24 female, 27 male

Postcode households
19
Residents per household
2.7
CF23 8 residents
7,049

Age bands in CF23 8

Wider postcode sector
Age 0 to 14
19.3%

1,377 residents

Age 15 to 24
10.7%

765 residents

Age 25 to 44
30.3%

2,164 residents

Age 45 to 64
28.5%

2,034 residents

Age 65 and over
11.1%

795 residents

This postcode contained 0.7% of the sector's usual residents on Census Day. The age profile describes the wider CF23 8 sector, not people in this individual postcode.

How to read these estimates
The standard postcode headcounts and the commissioned age table are separate ONS outputs. Small counts are disclosure-controlled, and totals can differ slightly between tables. Coverage is England and Wales only.

Census Day: 21 March 2021. Sources: ONS/Nomis P001-P004 and ONS CT21_0228. Age table version 2024-04-08.

Fixed broadband coverage

Ofcom's predicted availability across all residential and commercial premises in this postcode in January 2026.

Superfast, 30 Mbit/s+
100%
Ultrafast, 100 Mbit/s+
100%
Ultrafast, 300 Mbit/s+
100%
Gigabit-capable
100%
Unable to receive decent fixed or FWA broadband
0%
Next Generation Access
100%
Decent broadband available from fixed wireless
30%
Coverage is a modelled postcode-level snapshot, not a speed test or a guarantee for a named property. Check availability with providers before making a decision. Ofcom does not publish postcode-level full-fibre coverage in this release for commercial-confidentiality reasons.

Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.

NHS ODS

GP practices

20

within 5 km

  • CYNCOED MEDICAL PRACTICE

    DARTINGTON DRIVE, PONTPRENNAU, CARDIFF, CF23 8SQ

    ODS code W97010

    367 m

  • ST. DAVIDS MEDICAL CENTRE

    PONTPRENNAU MEDICAL CENTR, PENTWYN DRIVE, CARDIFF, CF23 7SD

    ODS code W97065

    767 m

  • LLANEDEYRN HEALTH CENTRE

    LLAN HEALTHCARE, WELLBEING HUB @ MAELFA, ROUND WOOD, LLANEDEYRN, CARDIFF, CF23 9PF

    ODS code W97008

    2.0 km

  • LLANISHEN COURT SURGERY

    LLANISHEN COURT, LLANISHEN, CARDIFF, CF14 5YU

    ODS code W97013

    3.0 km

  • BRYNDERWEN SURGERY

    CRICKHOWELL ROAD, ST MELLONS, CARDIFF, CF3 0EF

    ODS code W97006

    3.1 km

  • RUMNEY PRIMARY CARE CENTRE

    BARMOUTH ROAD, RUMNEY, CARDIFF, CF3 3LG

    ODS code W97027

    3.2 km

  • NORTH CARDIFF MEDICAL CENTRE

    EXCALIBUR DRIVE, THORNHILL, CARDIFF, CF14 9BB

    ODS code W97015

    3.4 km

  • ST. ISAN ROAD SURGERY

    46 ST. ISAN ROAD, HEATH CARDIFF, CARDIFF, CF14 4UU

    ODS code W97053

    3.5 km

  • WILLOWBROOK SURGERY

    5 STRATHY ROAD, ST. MELLONS, CARDIFF, CF3 0SH

    ODS code W97069

    3.9 km

  • ROATH HOUSE SURGERY

    100 PEN-Y-LAN ROAD, PENYLAN, CARDIFF, CF23 5RH

    ODS code W97034

    4.0 km

  • CRWYS MEDICAL CENTRE

    THE CRWYS SURGERY, WEDAL ROAD, CARDIFF, CF14 3QX

    ODS code W97041

    4.1 km

  • THE PENYLAN SURGERY

    74 PEN-Y-LAN ROAD, CARDIFF, CF23 5SY

    ODS code W97033

    4.2 km

  • BIRCHGROVE SURGERY

    CAERPHILLY ROAD, CARDIFF, CF14 4QJ

    ODS code W97021

    4.2 km

  • WHITCHURCH ROAD SURGERY

    SACHVILLE AVENUE, CARDIFF, CF14 3NY

    ODS code W97025

    4.5 km

  • FOUR ELMS MEDICAL CENTRE

    STERLING CLOSE, FFORDD PENGAM PENGAM GREE, SPLOTT, CARDIFF, CF24 2HB

    ODS code W97048

    4.8 km

  • MEDDYGFA ALBANY SURGERY

    219 - 221 CITY ROAD, ROATH, CARDIFF, CF24 3JD

    ODS code W97014

    4.8 km

  • CATHAYS SURGERY

    137 CATHAYS TERRACE, CARDIFF, CF24 4HU

    ODS code W97009

    4.8 km

  • THE CITY SURGERY

    187 CITY ROAD, ROATH, CARDIFF, CF24 3WD

    ODS code W97056

    4.9 km

  • NORTH ROAD MEDICAL PRACTICE

    182 NORTH ROAD, CARDIFF, CF14 3XQ

    ODS code W97020

    4.9 km

  • ROATHWELL SURGERY

    116 NEWPORT ROAD, CARDIFF, CF24 1YT

    ODS code W97002

    5.0 km

Organisation records, not service availability
These are records marked active in NHS England's Organisation Data Service for England and Wales. Branch surgeries, pharmacies, dentists and hospitals are not included. They do not confirm patient registration, services, opening hours, appointments or care quality. Distances are straight-line from the postcode point.

Source acquired on 2026-09-03. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Nearby transport

  • Pentwyn Drive

    BCT · Pentwyn

    0.1 miles

  • Pentwyn Drive

    BCT · Pentwyn

    0.1 miles

  • Glyn Eiddw

    BCT · Pentwyn

    0.2 miles

  • Glyn Eiddw

    BCT · Pentwyn

    0.2 miles

  • The Farthings

    BCT · Pontprennau

    0.2 miles

Evidence in context

A factual reading of the data in this report's scope. It is not a location score or a recommendation.

Property market

Recorded sales

The five-year median is £294,500 from 3 recorded sales in CF23 8BY. This is a recorded-sale statistic, not a current valuation.

The latest UK House Price Index average for Cardiff is £270,094 in June 2026, up 2.1% year on year.

Schools

Published establishments

52 open schools are in scope, including 0 primary and 0 secondary schools. Pontprennau Primary School is the nearest published school at 605 m.

Counts describe active establishment records. They do not assess admissions, catchments or quality.

Recorded crime

Published police records

1,320 published events cover 12 months, averaging 110 events per published month. The largest recorded category is Violence and sexual offences with 522 events.

The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.