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CF3 0AJ

Trowbridge · Cardiff · Wales

Updated September 2026

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Location overview

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Post town
Cardiff
Ward
Trowbridge
Local authority
Cardiff
Constituency
Cardiff East
Postcode district
CF3
Postcode sector
CF3 0

Nearby postcodes

Nearby postcode distances
Postcode Distance
CF3 0AE 63 m
CF3 0AH 69 m
CF3 5ST 103 m
CF3 0AQ 115 m
CF3 5UD 119 m
Complete postcode fields and official codes
Postcode
CF3 0AJ
Status
Current
Introduced
1 September 1981
Terminated
Not published
Postcode area
CF
Postcode district
CF3
Postcode sector
CF3 0
Latitude
51.523361
Longitude
-3.110898
British National Grid easting
323,025
British National Grid northing
181,079

Statistical and administrative geographies

Country
Wales · W92000004
Region
W99999999
Local authority district
Cardiff · W06000015
Electoral ward
Trowbridge · W05001296
Parish or community
W04001008
Westminster constituency
Cardiff East · W07000089
Output area
W00009681
Lower layer super output area
Cardiff 013C · W01001881
Middle layer super output area
Cardiff 013 · W02000379

Postcode source versions

Explore CF3

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

Property

At this postcode

View all property records
4 recorded sales at this postcode
Address Date Price
4, Mallard Close, St Mellons, Cardiff, CF3 0AJ 10 June 2005 £103,950
4, Mallard Close, St Mellons, Cardiff, CF3 0AJ 10 June 2005 £105,000
7, Mallard Close, St Mellons, Cardiff, CF3 0AJ 21 March 1997 £38,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
38
Primary
0
Secondary
0

  1. Oakfield Primary School

    Welsh establishment

    236 m

  2. Pen-Y-Bryn Primary School

    Welsh establishment

    473 m

  3. St Johns College

    Welsh establishment

    546 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
3,207
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 1,240
  • Public order 372
  • Anti social behaviour 345
  • Shoplifting 343
  • Criminal damage and arson 301

Census 2021

Population and age profile

Postcode residents
31

14 female, 17 male

Postcode households
16
Residents per household
1.9
CF3 0 residents
12,539

Age bands in CF3 0

Wider postcode sector
Age 0 to 14
23%

2,944 residents

Age 15 to 24
11.9%

1,525 residents

Age 25 to 44
29.6%

3,781 residents

Age 45 to 64
23.3%

2,983 residents

Age 65 and over
12.1%

1,544 residents

This postcode contained 0.2% of the sector's usual residents on Census Day. The age profile describes the wider CF3 0 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
0%
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

9

within 5 km

  • BRYNDERWEN SURGERY

    CRICKHOWELL ROAD, ST MELLONS, CARDIFF, CF3 0EF

    ODS code W97006

    672 m

  • WILLOWBROOK SURGERY

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

    ODS code W97069

    1.4 km

  • RUMNEY PRIMARY CARE CENTRE

    BARMOUTH ROAD, RUMNEY, CARDIFF, CF3 3LG

    ODS code W97027

    2.1 km

  • ST. DAVIDS MEDICAL CENTRE

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

    ODS code W97065

    2.5 km

  • CYNCOED MEDICAL PRACTICE

    DARTINGTON DRIVE, PONTPRENNAU, CARDIFF, CF23 8SQ

    ODS code W97010

    2.9 km

  • LLANEDEYRN HEALTH CENTRE

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

    ODS code W97008

    2.9 km

  • FOUR ELMS MEDICAL CENTRE

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

    ODS code W97048

    4.0 km

  • ROATH HOUSE SURGERY

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

    ODS code W97034

    4.6 km

  • THE PENYLAN SURGERY

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

    ODS code W97033

    4.7 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

  • Tarwick Drive

    BCT · St Mellons

    0.0 miles

  • Tarwick Drive

    BCT · St Mellons

    0.1 miles

  • Bluebell Inn

    BCT · Old St Mellons

    0.1 miles

  • Bluebell Inn

    BCT · Old St Mellons

    0.2 miles

  • Llaneirwg Way

    BCT · St Mellons

    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.

Schools

Published establishments

38 open schools are in scope, including 0 primary and 0 secondary schools. Oakfield Primary School is the nearest published school at 236 m.

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

Recorded crime

Published police records

3,207 published events cover 12 months, averaging 267.25 events per published month. The largest recorded category is Violence and sexual offences with 1,240 events.

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