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CF23 8BB

Pontprennau and Old St Mellons · Cardiff · Wales

Updated September 2026

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Location overview

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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 8XH 65 m
CF23 8RH 79 m
CF23 8GL 104 m
CF23 8RS 107 m
CF23 8XG 119 m
Complete postcode fields and official codes
Postcode
CF23 8BB
Status
Current
Introduced
1 June 1999
Terminated
Not published
Postcode area
CF
Postcode district
CF23
Postcode sector
CF23 8
Latitude
51.539634
Longitude
-3.136356
British National Grid easting
321,287
British National Grid northing
182,916

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
W00009501
Lower layer super output area
Cardiff 003B · W01001842
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.

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
41
Primary
0
Secondary
0

  1. Pontprennau Primary School

    Welsh establishment

    471 m

  2. St Mellons C.I.W. Primary School

    Welsh establishment

    1.2 km

  3. The Hollies Special School

    Welsh establishment

    1.6 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
730
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 281
  • Public order 117
  • Anti social behaviour 66
  • Shoplifting 64
  • Criminal damage and arson 56

Census 2021

Population and age profile

Postcode residents
Not supplied
Postcode households
Not supplied
Residents per household
Not available
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

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+
50%
Ultrafast, 100 Mbit/s+
50%
Ultrafast, 300 Mbit/s+
50%
Gigabit-capable
50%
Unable to receive decent fixed or FWA broadband
0%
Next Generation Access
50%
Decent broadband available from fixed wireless
100%
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

10

within 5 km

  • CYNCOED MEDICAL PRACTICE

    DARTINGTON DRIVE, PONTPRENNAU, CARDIFF, CF23 8SQ

    ODS code W97010

    1.4 km

  • ST. DAVIDS MEDICAL CENTRE

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

    ODS code W97065

    1.7 km

  • BRYNDERWEN SURGERY

    CRICKHOWELL ROAD, ST MELLONS, CARDIFF, CF3 0EF

    ODS code W97006

    2.9 km

  • LLANEDEYRN HEALTH CENTRE

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

    ODS code W97008

    3.0 km

  • WILLOWBROOK SURGERY

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

    ODS code W97069

    3.5 km

  • RUMNEY PRIMARY CARE CENTRE

    BARMOUTH ROAD, RUMNEY, CARDIFF, CF3 3LG

    ODS code W97027

    3.8 km

  • LLANISHEN COURT SURGERY

    LLANISHEN COURT, LLANISHEN, CARDIFF, CF14 5YU

    ODS code W97013

    3.8 km

  • NORTH CARDIFF MEDICAL CENTRE

    EXCALIBUR DRIVE, THORNHILL, CARDIFF, CF14 9BB

    ODS code W97015

    4.0 km

  • ST. ISAN ROAD SURGERY

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

    ODS code W97053

    4.5 km

  • ROATH HOUSE SURGERY

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

    ODS code W97034

    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

  • Malthouse Avenue

    BCT · Cardiff Gate

    0.1 miles

  • Cardiff Gate

    BCT · Cardiff Gate

    0.2 miles

  • Cardiff Gate

    BCT · Cardiff Gate

    0.2 miles

  • Youghal Close

    BCT · Pontprennau

    0.3 miles

  • Youghal Close

    BCT · Pontprennau

    0.3 miles

Evidence in context

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

Schools

Published establishments

41 open schools are in scope, including 0 primary and 0 secondary schools. Pontprennau Primary School is the nearest published school at 471 m.

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

Recorded crime

Published police records

730 published events cover 12 months, averaging 60.833 events per published month. The largest recorded category is Violence and sexual offences with 281 events.

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